diff --git a/src/interfaces/wallet.cpp b/src/interfaces/wallet.cpp
index 896d9e3d3..813c6c27a 100644
--- a/src/interfaces/wallet.cpp
+++ b/src/interfaces/wallet.cpp
@@ -1,509 +1,533 @@
 // Copyright (c) 2018 The Bitcoin Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 #include <interfaces/wallet.h>
 
 #include <amount.h>
 #include <chainparams.h>
+#include <config.h>
 #include <consensus/validation.h>
 #include <interfaces/chain.h>
 #include <interfaces/handler.h>
 #include <policy/fees.h>
 #include <primitives/transaction.h>
+#include <rpc/server.h>
 #include <script/standard.h>
 #include <support/allocators/secure.h>
 #include <sync.h>
 #include <ui_interface.h>
 #include <util/check.h>
+#include <util/ref.h>
 #include <util/system.h>
+#include <wallet/context.h>
 #include <wallet/fees.h>
 #include <wallet/ismine.h>
 #include <wallet/load.h>
 #include <wallet/rpcdump.h>
 #include <wallet/wallet.h>
 
 namespace interfaces {
 namespace {
 
     //! Construct wallet tx struct.
     WalletTx MakeWalletTx(CWallet &wallet, const CWalletTx &wtx) {
         WalletTx result;
         result.tx = wtx.tx;
         result.txin_is_mine.reserve(wtx.tx->vin.size());
         for (const auto &txin : wtx.tx->vin) {
             result.txin_is_mine.emplace_back(wallet.IsMine(txin));
         }
         result.txout_is_mine.reserve(wtx.tx->vout.size());
         result.txout_address.reserve(wtx.tx->vout.size());
         result.txout_address_is_mine.reserve(wtx.tx->vout.size());
         for (const auto &txout : wtx.tx->vout) {
             result.txout_is_mine.emplace_back(wallet.IsMine(txout));
             result.txout_address.emplace_back();
             result.txout_address_is_mine.emplace_back(
                 ExtractDestination(txout.scriptPubKey,
                                    result.txout_address.back())
                     ? wallet.IsMine(result.txout_address.back())
                     : ISMINE_NO);
         }
         result.credit = wtx.GetCredit(ISMINE_ALL);
         result.debit = wtx.GetDebit(ISMINE_ALL);
         result.change = wtx.GetChange();
         result.time = wtx.GetTxTime();
         result.value_map = wtx.mapValue;
         result.is_coinbase = wtx.IsCoinBase();
         return result;
     }
 
     //! Construct wallet tx status struct.
     WalletTxStatus MakeWalletTxStatus(CWallet &wallet, const CWalletTx &wtx) {
         WalletTxStatus result;
         result.block_height = wtx.m_confirm.block_height > 0
                                   ? wtx.m_confirm.block_height
                                   : std::numeric_limits<int>::max();
         result.blocks_to_maturity = wtx.GetBlocksToMaturity();
         result.depth_in_main_chain = wtx.GetDepthInMainChain();
         result.time_received = wtx.nTimeReceived;
         result.lock_time = wtx.tx->nLockTime;
         TxValidationState state;
         result.is_final =
             wallet.chain().contextualCheckTransactionForCurrentBlock(*wtx.tx,
                                                                      state);
         result.is_trusted = wtx.IsTrusted();
         result.is_abandoned = wtx.isAbandoned();
         result.is_coinbase = wtx.IsCoinBase();
         result.is_in_main_chain = wtx.IsInMainChain();
         return result;
     }
 
     //! Construct wallet TxOut struct.
     WalletTxOut MakeWalletTxOut(CWallet &wallet, const CWalletTx &wtx, int n,
                                 int depth)
         EXCLUSIVE_LOCKS_REQUIRED(wallet.cs_wallet) {
         WalletTxOut result;
         result.txout = wtx.tx->vout[n];
         result.time = wtx.GetTxTime();
         result.depth_in_main_chain = depth;
         result.is_spent = wallet.IsSpent(COutPoint(wtx.GetId(), n));
         return result;
     }
 
     class WalletImpl : public Wallet {
     public:
         explicit WalletImpl(const std::shared_ptr<CWallet> &wallet)
             : m_wallet(wallet) {}
 
         bool encryptWallet(const SecureString &wallet_passphrase) override {
             return m_wallet->EncryptWallet(wallet_passphrase);
         }
         bool isCrypted() override { return m_wallet->IsCrypted(); }
         bool lock() override { return m_wallet->Lock(); }
         bool unlock(const SecureString &wallet_passphrase) override {
             return m_wallet->Unlock(wallet_passphrase);
         }
         bool isLocked() override { return m_wallet->IsLocked(); }
         bool changeWalletPassphrase(
             const SecureString &old_wallet_passphrase,
             const SecureString &new_wallet_passphrase) override {
             return m_wallet->ChangeWalletPassphrase(old_wallet_passphrase,
                                                     new_wallet_passphrase);
         }
         void abortRescan() override { m_wallet->AbortRescan(); }
         bool backupWallet(const std::string &filename) override {
             return m_wallet->BackupWallet(filename);
         }
         std::string getWalletName() override { return m_wallet->GetName(); }
         std::set<CTxDestination>
         getLabelAddresses(const std::string &label) override {
             return m_wallet->GetLabelAddresses(label);
         };
         bool getNewDestination(const OutputType type, const std::string label,
                                CTxDestination &dest) override {
             LOCK(m_wallet->cs_wallet);
             std::string error;
             return m_wallet->GetNewDestination(type, label, dest, error);
         }
         const CChainParams &getChainParams() override {
             return m_wallet->chainParams;
         }
         bool getPubKey(const CScript &script, const CKeyID &address,
                        CPubKey &pub_key) override {
             std::unique_ptr<SigningProvider> provider =
                 m_wallet->GetSolvingProvider(script);
             if (provider) {
                 return provider->GetPubKey(address, pub_key);
             }
             return false;
         }
         SigningResult signMessage(const std::string &message,
                                   const PKHash &pkhash,
                                   std::string &str_sig) override {
             return m_wallet->SignMessage(message, pkhash, str_sig);
         }
         bool isSpendable(const CTxDestination &dest) override {
             return m_wallet->IsMine(dest) & ISMINE_SPENDABLE;
         }
         bool haveWatchOnly() override {
             auto spk_man = m_wallet->GetLegacyScriptPubKeyMan();
             if (spk_man) {
                 return spk_man->HaveWatchOnly();
             }
             return false;
         };
         bool setAddressBook(const CTxDestination &dest, const std::string &name,
                             const std::string &purpose) override {
             return m_wallet->SetAddressBook(dest, name, purpose);
         }
         bool delAddressBook(const CTxDestination &dest) override {
             return m_wallet->DelAddressBook(dest);
         }
         bool getAddress(const CTxDestination &dest, std::string *name,
                         isminetype *is_mine, std::string *purpose) override {
             LOCK(m_wallet->cs_wallet);
             auto it = m_wallet->m_address_book.find(dest);
             if (it == m_wallet->m_address_book.end() || it->second.IsChange()) {
                 return false;
             }
             if (name) {
                 *name = it->second.GetLabel();
             }
             if (is_mine) {
                 *is_mine = m_wallet->IsMine(dest);
             }
             if (purpose) {
                 *purpose = it->second.purpose;
             }
             return true;
         }
         std::vector<WalletAddress> getAddresses() override {
             LOCK(m_wallet->cs_wallet);
             std::vector<WalletAddress> result;
             for (const auto &item : m_wallet->m_address_book) {
                 if (item.second.IsChange()) {
                     continue;
                 }
                 result.emplace_back(item.first, m_wallet->IsMine(item.first),
                                     item.second.GetLabel(),
                                     item.second.purpose);
             }
             return result;
         }
         bool addDestData(const CTxDestination &dest, const std::string &key,
                          const std::string &value) override {
             LOCK(m_wallet->cs_wallet);
             WalletBatch batch{m_wallet->GetDatabase()};
             return m_wallet->AddDestData(batch, dest, key, value);
         }
         bool eraseDestData(const CTxDestination &dest,
                            const std::string &key) override {
             LOCK(m_wallet->cs_wallet);
             WalletBatch batch{m_wallet->GetDatabase()};
             return m_wallet->EraseDestData(batch, dest, key);
         }
         std::vector<std::string>
         getDestValues(const std::string &prefix) override {
             LOCK(m_wallet->cs_wallet);
             return m_wallet->GetDestValues(prefix);
         }
         void lockCoin(const COutPoint &output) override {
             LOCK(m_wallet->cs_wallet);
             return m_wallet->LockCoin(output);
         }
         void unlockCoin(const COutPoint &output) override {
             LOCK(m_wallet->cs_wallet);
             return m_wallet->UnlockCoin(output);
         }
         bool isLockedCoin(const COutPoint &output) override {
             LOCK(m_wallet->cs_wallet);
             return m_wallet->IsLockedCoin(output);
         }
         void listLockedCoins(std::vector<COutPoint> &outputs) override {
             LOCK(m_wallet->cs_wallet);
             return m_wallet->ListLockedCoins(outputs);
         }
         CTransactionRef
         createTransaction(const std::vector<CRecipient> &recipients,
                           const CCoinControl &coin_control, bool sign,
                           int &change_pos, Amount &fee,
                           bilingual_str &fail_reason) override {
             LOCK(m_wallet->cs_wallet);
             CTransactionRef tx;
             if (!m_wallet->CreateTransaction(recipients, tx, fee, change_pos,
                                              fail_reason, coin_control, sign)) {
                 return {};
             }
             return tx;
         }
         void commitTransaction(CTransactionRef tx, WalletValueMap value_map,
                                WalletOrderForm order_form) override {
             LOCK(m_wallet->cs_wallet);
             m_wallet->CommitTransaction(std::move(tx), std::move(value_map),
                                         std::move(order_form));
         }
         bool transactionCanBeAbandoned(const TxId &txid) override {
             return m_wallet->TransactionCanBeAbandoned(txid);
         }
         bool abandonTransaction(const TxId &txid) override {
             LOCK(m_wallet->cs_wallet);
             return m_wallet->AbandonTransaction(txid);
         }
         CTransactionRef getTx(const TxId &txid) override {
             LOCK(m_wallet->cs_wallet);
             auto mi = m_wallet->mapWallet.find(txid);
             if (mi != m_wallet->mapWallet.end()) {
                 return mi->second.tx;
             }
             return {};
         }
         WalletTx getWalletTx(const TxId &txid) override {
             LOCK(m_wallet->cs_wallet);
             auto mi = m_wallet->mapWallet.find(txid);
             if (mi != m_wallet->mapWallet.end()) {
                 return MakeWalletTx(*m_wallet, mi->second);
             }
             return {};
         }
         std::vector<WalletTx> getWalletTxs() override {
             LOCK(m_wallet->cs_wallet);
             std::vector<WalletTx> result;
             result.reserve(m_wallet->mapWallet.size());
             for (const auto &entry : m_wallet->mapWallet) {
                 result.emplace_back(MakeWalletTx(*m_wallet, entry.second));
             }
             return result;
         }
         bool tryGetTxStatus(const TxId &txid,
                             interfaces::WalletTxStatus &tx_status,
                             int &num_blocks, int64_t &block_time) override {
             TRY_LOCK(m_wallet->cs_wallet, locked_wallet);
             if (!locked_wallet) {
                 return false;
             }
             auto mi = m_wallet->mapWallet.find(txid);
             if (mi == m_wallet->mapWallet.end()) {
                 return false;
             }
             num_blocks = m_wallet->GetLastBlockHeight();
             block_time = -1;
             CHECK_NONFATAL(m_wallet->chain().findBlock(
                 m_wallet->GetLastBlockHash(), FoundBlock().time(block_time)));
             tx_status = MakeWalletTxStatus(*m_wallet, mi->second);
             return true;
         }
         WalletTx getWalletTxDetails(const TxId &txid, WalletTxStatus &tx_status,
                                     WalletOrderForm &order_form,
                                     bool &in_mempool,
                                     int &num_blocks) override {
             LOCK(m_wallet->cs_wallet);
             auto mi = m_wallet->mapWallet.find(txid);
             if (mi != m_wallet->mapWallet.end()) {
                 num_blocks = m_wallet->GetLastBlockHeight();
                 in_mempool = mi->second.InMempool();
                 order_form = mi->second.vOrderForm;
                 tx_status = MakeWalletTxStatus(*m_wallet, mi->second);
                 return MakeWalletTx(*m_wallet, mi->second);
             }
             return {};
         }
         TransactionError fillPSBT(SigHashType sighash_type, bool sign,
                                   bool bip32derivs,
                                   PartiallySignedTransaction &psbtx,
                                   bool &complete) const override {
             return m_wallet->FillPSBT(psbtx, complete, sighash_type, sign,
                                       bip32derivs);
         }
         WalletBalances getBalances() override {
             const auto bal = m_wallet->GetBalance();
             WalletBalances result;
             result.balance = bal.m_mine_trusted;
             result.unconfirmed_balance = bal.m_mine_untrusted_pending;
             result.immature_balance = bal.m_mine_immature;
             result.have_watch_only = haveWatchOnly();
             if (result.have_watch_only) {
                 result.watch_only_balance = bal.m_watchonly_trusted;
                 result.unconfirmed_watch_only_balance =
                     bal.m_watchonly_untrusted_pending;
                 result.immature_watch_only_balance = bal.m_watchonly_immature;
             }
             return result;
         }
         bool tryGetBalances(WalletBalances &balances,
                             int &num_blocks) override {
             TRY_LOCK(m_wallet->cs_wallet, locked_wallet);
             if (!locked_wallet) {
                 return false;
             }
             num_blocks = m_wallet->GetLastBlockHeight();
             balances = getBalances();
             return true;
         }
         Amount getBalance() override {
             return m_wallet->GetBalance().m_mine_trusted;
         }
         Amount getAvailableBalance(const CCoinControl &coin_control) override {
             return m_wallet->GetAvailableBalance(&coin_control);
         }
         isminetype txinIsMine(const CTxIn &txin) override {
             LOCK(m_wallet->cs_wallet);
             return m_wallet->IsMine(txin);
         }
         isminetype txoutIsMine(const CTxOut &txout) override {
             LOCK(m_wallet->cs_wallet);
             return m_wallet->IsMine(txout);
         }
         Amount getDebit(const CTxIn &txin, isminefilter filter) override {
             LOCK(m_wallet->cs_wallet);
             return m_wallet->GetDebit(txin, filter);
         }
         Amount getCredit(const CTxOut &txout, isminefilter filter) override {
             LOCK(m_wallet->cs_wallet);
             return m_wallet->GetCredit(txout, filter);
         }
         CoinsList listCoins() override {
             LOCK(m_wallet->cs_wallet);
             CoinsList result;
             for (const auto &entry : m_wallet->ListCoins()) {
                 auto &group = result[entry.first];
                 for (const auto &coin : entry.second) {
                     group.emplace_back(COutPoint(coin.tx->GetId(), coin.i),
                                        MakeWalletTxOut(*m_wallet, *coin.tx,
                                                        coin.i, coin.nDepth));
                 }
             }
             return result;
         }
         std::vector<WalletTxOut>
         getCoins(const std::vector<COutPoint> &outputs) override {
             LOCK(m_wallet->cs_wallet);
             std::vector<WalletTxOut> result;
             result.reserve(outputs.size());
             for (const auto &output : outputs) {
                 result.emplace_back();
                 auto it = m_wallet->mapWallet.find(output.GetTxId());
                 if (it != m_wallet->mapWallet.end()) {
                     int depth = it->second.GetDepthInMainChain();
                     if (depth >= 0) {
                         result.back() = MakeWalletTxOut(*m_wallet, it->second,
                                                         output.GetN(), depth);
                     }
                 }
             }
             return result;
         }
         bool hdEnabled() override { return m_wallet->IsHDEnabled(); }
         OutputType getDefaultAddressType() override {
             return m_wallet->m_default_address_type;
         }
         bool canGetAddresses() const override {
             return m_wallet->CanGetAddresses();
         }
         bool privateKeysDisabled() override {
             return m_wallet->IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS);
         }
         OutputType getDefaultChangeType() override {
             return m_wallet->m_default_change_type;
         }
         Amount getDefaultMaxTxFee() override {
             return m_wallet->m_default_max_tx_fee;
         }
         void remove() override { RemoveWallet(m_wallet); }
         bool isLegacy() override { return m_wallet->IsLegacy(); }
         std::unique_ptr<Handler> handleUnload(UnloadFn fn) override {
             return MakeHandler(m_wallet->NotifyUnload.connect(fn));
         }
         std::unique_ptr<Handler>
         handleShowProgress(ShowProgressFn fn) override {
             return MakeHandler(m_wallet->ShowProgress.connect(fn));
         }
         std::unique_ptr<Handler>
         handleStatusChanged(StatusChangedFn fn) override {
             return MakeHandler(m_wallet->NotifyStatusChanged.connect(
                 [fn](CWallet *) { fn(); }));
         }
         std::unique_ptr<Handler>
         handleAddressBookChanged(AddressBookChangedFn fn) override {
             return MakeHandler(m_wallet->NotifyAddressBookChanged.connect(
                 [fn](CWallet *, const CTxDestination &address,
                      const std::string &label, bool is_mine,
                      const std::string &purpose, ChangeType status) {
                     fn(address, label, is_mine, purpose, status);
                 }));
         }
         std::unique_ptr<Handler>
         handleTransactionChanged(TransactionChangedFn fn) override {
             return MakeHandler(m_wallet->NotifyTransactionChanged.connect(
                 [fn](CWallet *, const TxId &txid, ChangeType status) {
                     fn(txid, status);
                 }));
         }
         std::unique_ptr<Handler>
         handleWatchOnlyChanged(WatchOnlyChangedFn fn) override {
             return MakeHandler(m_wallet->NotifyWatchonlyChanged.connect(fn));
         }
         std::unique_ptr<Handler>
         handleCanGetAddressesChanged(CanGetAddressesChangedFn fn) override {
             return MakeHandler(
                 m_wallet->NotifyCanGetAddressesChanged.connect(fn));
         }
         Amount getRequiredFee(unsigned int tx_bytes) override {
             return GetRequiredFee(*m_wallet, tx_bytes);
         }
         Amount getMinimumFee(unsigned int tx_bytes,
                              const CCoinControl &coin_control) override {
             return GetMinimumFee(*m_wallet, tx_bytes, coin_control);
         }
         CWallet *wallet() override { return m_wallet.get(); }
 
         std::shared_ptr<CWallet> m_wallet;
     };
 
     class WalletClientImpl : public ChainClient {
     public:
         WalletClientImpl(Chain &chain,
                          std::vector<std::string> wallet_filenames)
-            : m_chain(chain), m_wallet_filenames(std::move(wallet_filenames)) {}
+            : m_wallet_filenames(std::move(wallet_filenames)) {
+            m_context.chain = &chain;
+        }
+
+        void registerRpcs(const Span<const CRPCCommand> &commands) {
+            for (const CRPCCommand &command : commands) {
+                m_rpc_commands.emplace_back(
+                    command.category, command.name,
+                    [this, &command](Config &config,
+                                     const JSONRPCRequest &request,
+                                     UniValue &result, bool last_handler) {
+                        return command.actor(config, {request, m_context},
+                                             result, last_handler);
+                    },
+                    command.argNames, command.unique_id);
+                m_rpc_handlers.emplace_back(
+                    m_context.chain->handleRpc(m_rpc_commands.back()));
+            }
+        }
 
         void registerRpcs() override {
-            g_rpc_chain = &m_chain;
-            RegisterWalletRPCCommands(m_chain, m_rpc_handlers);
-            RegisterDumpRPCCommands(m_chain, m_rpc_handlers);
+            registerRpcs(GetWalletRPCCommands());
+            registerRpcs(GetWalletDumpRPCCommands());
         }
         bool verify(const CChainParams &chainParams) override {
-            return VerifyWallets(chainParams, m_chain, m_wallet_filenames);
+            return VerifyWallets(chainParams, *m_context.chain,
+                                 m_wallet_filenames);
         }
         bool load(const CChainParams &chainParams) override {
-            return LoadWallets(chainParams, m_chain, m_wallet_filenames);
+            return LoadWallets(chainParams, *m_context.chain,
+                               m_wallet_filenames);
         }
         void start(CScheduler &scheduler) override {
             return StartWallets(scheduler);
         }
         void flush() override { return FlushWallets(); }
         void stop() override { return StopWallets(); }
         void setMockTime(int64_t time) override { return SetMockTime(time); }
         std::vector<std::unique_ptr<Wallet>> getWallets() override {
             std::vector<std::unique_ptr<Wallet>> wallets;
             for (const auto &wallet : GetWallets()) {
                 wallets.emplace_back(MakeWallet(wallet));
             }
             return wallets;
         }
         ~WalletClientImpl() override { UnloadWallets(); }
 
-        Chain &m_chain;
+        WalletContext m_context;
         std::vector<std::string> m_wallet_filenames;
         std::vector<std::unique_ptr<Handler>> m_rpc_handlers;
+        std::list<CRPCCommand> m_rpc_commands;
     };
 
 } // namespace
 
 std::unique_ptr<Wallet> MakeWallet(const std::shared_ptr<CWallet> &wallet) {
     return wallet ? std::make_unique<WalletImpl>(wallet) : nullptr;
 }
 
 std::unique_ptr<ChainClient>
 MakeWalletClient(Chain &chain, std::vector<std::string> wallet_filenames) {
     return std::make_unique<WalletClientImpl>(chain,
                                               std::move(wallet_filenames));
 }
 
 } // namespace interfaces
diff --git a/src/rpc/request.h b/src/rpc/request.h
index e573fd6d1..262cd1cb6 100644
--- a/src/rpc/request.h
+++ b/src/rpc/request.h
@@ -1,51 +1,59 @@
 // Copyright (c) 2018 The Bitcoin developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 #ifndef BITCOIN_RPC_REQUEST_H
 #define BITCOIN_RPC_REQUEST_H
 
 #include <string>
 
 #include <univalue.h>
 
 namespace util {
 class Ref;
 } // namespace util
 
 UniValue JSONRPCRequestObj(const std::string &strMethod, const UniValue &params,
                            const UniValue &id);
 UniValue JSONRPCReplyObj(const UniValue &result, const UniValue &error,
                          const UniValue &id);
 std::string JSONRPCReply(const UniValue &result, const UniValue &error,
                          const UniValue &id);
 UniValue JSONRPCError(int code, const std::string &message);
 
 /** Generate a new RPC authentication cookie and write it to disk */
 bool GenerateAuthCookie(std::string *cookie_out);
 /** Read the RPC authentication cookie from disk */
 bool GetAuthCookie(std::string *cookie_out);
 /** Delete RPC authentication cookie from disk */
 void DeleteAuthCookie();
 /** Parse JSON-RPC batch reply into a vector */
 std::vector<UniValue> JSONRPCProcessBatchReply(const UniValue &in, size_t num);
 
 class JSONRPCRequest {
 public:
     UniValue id;
     std::string strMethod;
     UniValue params;
     bool fHelp;
     std::string URI;
     std::string authUser;
     std::string peerAddr;
     const util::Ref &context;
 
     JSONRPCRequest(const util::Ref &contextIn)
         : id(NullUniValue), params(NullUniValue), fHelp(false),
           context(contextIn) {}
 
+    //! Initializes request information from another request object and the
+    //! given context. The implementation should be updated if any members are
+    //! added or removed above.
+    JSONRPCRequest(const JSONRPCRequest &other, const util::Ref &contextIn)
+        : id(other.id), strMethod(other.strMethod), params(other.params),
+          fHelp(other.fHelp), URI(other.URI), authUser(other.authUser),
+          peerAddr(other.peerAddr), context(contextIn) {}
+
     void parse(const UniValue &valRequest);
 };
 
 #endif // BITCOIN_RPC_REQUEST_H
diff --git a/src/wallet/CMakeLists.txt b/src/wallet/CMakeLists.txt
index 64887e9c0..7ca736a6b 100644
--- a/src/wallet/CMakeLists.txt
+++ b/src/wallet/CMakeLists.txt
@@ -1,35 +1,36 @@
 # Copyright (c) 2017 The Bitcoin developers
 
 project(wallet)
 
 # Add Berkeley DB dependency.
 find_package(BerkeleyDB 5.3 REQUIRED COMPONENTS CXX)
 
 # PR15638(https://reviews.bitcoinabc.org/D6000) moved some wallet load
 # functions to wallet/load.cpp, the others in wallet/init.cpp remain in
 # the server
 target_sources(server PRIVATE init.cpp)
 
 add_library(wallet
 	../interfaces/wallet.cpp
 	coincontrol.cpp
 	coinselection.cpp
+	context.cpp
 	crypter.cpp
 	db.cpp
 	fees.cpp
 	load.cpp
 	rpcdump.cpp
 	rpcwallet.cpp
 	scriptpubkeyman.cpp
 	wallet.cpp
 	walletdb.cpp
 	walletutil.cpp
 )
 
 # There is a circular dependency between wallet and server, see:
 # https://github.com/bitcoin/bitcoin/pull/14437#discussion_r226237048
 target_link_libraries(wallet bitcoinconsensus univalue BerkeleyDB::CXX)
 
 # wallet-tool library
 add_library(wallet-tool wallettool.cpp)
 target_link_libraries(wallet-tool wallet)
diff --git a/src/wallet/context.cpp b/src/wallet/context.cpp
new file mode 100644
index 000000000..09b2f3046
--- /dev/null
+++ b/src/wallet/context.cpp
@@ -0,0 +1,8 @@
+// Copyright (c) 2020 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include <wallet/context.h>
+
+WalletContext::WalletContext() {}
+WalletContext::~WalletContext() {}
diff --git a/src/wallet/context.h b/src/wallet/context.h
new file mode 100644
index 000000000..26543b31e
--- /dev/null
+++ b/src/wallet/context.h
@@ -0,0 +1,32 @@
+// Copyright (c) 2020 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#ifndef BITCOIN_WALLET_CONTEXT_H
+#define BITCOIN_WALLET_CONTEXT_H
+
+namespace interfaces {
+class Chain;
+} // namespace interfaces
+
+//! WalletContext struct containing references to state shared between CWallet
+//! instances, like the reference to the chain interface, and the list of opened
+//! wallets.
+//!
+//! Future shared state can be added here as an alternative to adding global
+//! variables.
+//!
+//! The struct isn't intended to have any member functions. It should just be a
+//! collection of state pointers that doesn't pull in dependencies or implement
+//! behavior.
+struct WalletContext {
+    interfaces::Chain *chain{nullptr};
+
+    //! Declare default constructor and destructor that are not inline, so code
+    //! instantiating the WalletContext struct doesn't need to #include class
+    //! definitions for smart pointer and container members.
+    WalletContext();
+    ~WalletContext();
+};
+
+#endif // BITCOIN_WALLET_CONTEXT_H
diff --git a/src/wallet/rpcdump.cpp b/src/wallet/rpcdump.cpp
index abb47e0af..1c9bfcda4 100644
--- a/src/wallet/rpcdump.cpp
+++ b/src/wallet/rpcdump.cpp
@@ -1,2269 +1,2265 @@
 // Copyright (c) 2009-2016 The Bitcoin Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 #include <chain.h>
 #include <config.h>
 #include <core_io.h>
 #include <interfaces/chain.h>
 #include <key_io.h>
 #include <merkleblock.h>
 #include <rpc/server.h>
 #include <rpc/util.h>
 #include <script/descriptor.h>
 #include <script/script.h>
 #include <script/standard.h>
 #include <sync.h>
 #include <util/bip32.h>
 #include <util/system.h>
 #include <util/time.h>
 #include <util/translation.h>
 #include <wallet/rpcwallet.h>
 #include <wallet/wallet.h>
 
 #include <boost/algorithm/string.hpp>
 
 #include <cstdint>
 #include <tuple>
 
 using interfaces::FoundBlock;
 
 static std::string EncodeDumpString(const std::string &str) {
     std::stringstream ret;
     for (const uint8_t c : str) {
         if (c <= 32 || c >= 128 || c == '%') {
             ret << '%' << HexStr(&c, &c + 1);
         } else {
             ret << c;
         }
     }
     return ret.str();
 }
 
 static std::string DecodeDumpString(const std::string &str) {
     std::stringstream ret;
     for (unsigned int pos = 0; pos < str.length(); pos++) {
         uint8_t c = str[pos];
         if (c == '%' && pos + 2 < str.length()) {
             c = (((str[pos + 1] >> 6) * 9 + ((str[pos + 1] - '0') & 15)) << 4) |
                 ((str[pos + 2] >> 6) * 9 + ((str[pos + 2] - '0') & 15));
             pos += 2;
         }
         ret << c;
     }
     return ret.str();
 }
 
 static bool
 GetWalletAddressesForKey(const Config &config, LegacyScriptPubKeyMan *spk_man,
                          const CWallet *const pwallet, const CKeyID &keyid,
                          std::string &strAddr, std::string &strLabel)
     EXCLUSIVE_LOCKS_REQUIRED(pwallet->cs_wallet) {
     bool fLabelFound = false;
     CKey key;
     spk_man->GetKey(keyid, key);
     for (const auto &dest : GetAllDestinationsForKey(key.GetPubKey())) {
         const auto *address_book_entry = pwallet->FindAddressBookEntry(dest);
         if (address_book_entry) {
             if (!strAddr.empty()) {
                 strAddr += ",";
             }
             strAddr += EncodeDestination(dest, config);
             strLabel = EncodeDumpString(address_book_entry->GetLabel());
             fLabelFound = true;
         }
     }
     if (!fLabelFound) {
         strAddr = EncodeDestination(
             GetDestinationForKey(key.GetPubKey(),
                                  pwallet->m_default_address_type),
             config);
     }
     return fLabelFound;
 }
 
 static const int64_t TIMESTAMP_MIN = 0;
 
 static void RescanWallet(CWallet &wallet, const WalletRescanReserver &reserver,
                          int64_t time_begin = TIMESTAMP_MIN,
                          bool update = true) {
     int64_t scanned_time = wallet.RescanFromTime(time_begin, reserver, update);
     if (wallet.IsAbortingRescan()) {
         throw JSONRPCError(RPC_MISC_ERROR, "Rescan aborted by user.");
     } else if (scanned_time > time_begin) {
         throw JSONRPCError(RPC_WALLET_ERROR,
                            "Rescan was unable to fully rescan the blockchain. "
                            "Some transactions may be missing.");
     }
 }
 
 UniValue importprivkey(const Config &config, const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     CWallet *const pwallet = wallet.get();
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "importprivkey",
         "Adds a private key (as returned by dumpprivkey) to your wallet. "
         "Requires a new wallet backup.\n"
         "Hint: use importmulti to import more than one private key.\n"
         "\nNote: This call can take minutes to complete if rescan is true, "
         "during that time, other rpc calls\n"
         "may report that the imported key exists but related transactions are "
         "still missing, leading to temporarily incorrect/bogus balances and "
         "unspent outputs until rescan completes.\n"
         "Note: Use \"getwalletinfo\" to query the scanning progress.\n",
         {
             {"privkey", RPCArg::Type::STR, RPCArg::Optional::NO,
              "The private key (see dumpprivkey)"},
             {"label", RPCArg::Type::STR, /* default */
              "current label if address exists, otherwise \"\"",
              "An optional label"},
             {"rescan", RPCArg::Type::BOOL, /* default */ "true",
              "Rescan the wallet for transactions"},
         },
         RPCResults{},
         RPCExamples{
             "\nDump a private key\n" +
             HelpExampleCli("dumpprivkey", "\"myaddress\"") +
             "\nImport the private key with rescan\n" +
             HelpExampleCli("importprivkey", "\"mykey\"") +
             "\nImport using a label and without rescan\n" +
             HelpExampleCli("importprivkey", "\"mykey\" \"testing\" false") +
             "\nImport using default blank label and without rescan\n" +
             HelpExampleCli("importprivkey", "\"mykey\" \"\" false") +
             "\nAs a JSON-RPC call\n" +
             HelpExampleRpc("importprivkey", "\"mykey\", \"testing\", false")},
     }
         .Check(request);
 
     if (pwallet->IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS)) {
         throw JSONRPCError(RPC_WALLET_ERROR,
                            "Cannot import private keys to a wallet with "
                            "private keys disabled");
     }
 
     EnsureLegacyScriptPubKeyMan(*wallet, true);
 
     WalletRescanReserver reserver(*pwallet);
     bool fRescan = true;
     {
         LOCK(pwallet->cs_wallet);
 
         EnsureWalletIsUnlocked(pwallet);
 
         std::string strSecret = request.params[0].get_str();
         std::string strLabel = "";
         if (!request.params[1].isNull()) {
             strLabel = request.params[1].get_str();
         }
 
         // Whether to perform rescan after import
         if (!request.params[2].isNull()) {
             fRescan = request.params[2].get_bool();
         }
 
         if (fRescan && pwallet->chain().havePruned()) {
             // Exit early and print an error.
             // If a block is pruned after this check, we will import the key(s),
             // but fail the rescan with a generic error.
             throw JSONRPCError(RPC_WALLET_ERROR,
                                "Rescan is disabled when blocks are pruned");
         }
 
         if (fRescan && !reserver.reserve()) {
             throw JSONRPCError(RPC_WALLET_ERROR,
                                "Wallet is currently rescanning. Abort existing "
                                "rescan or wait.");
         }
 
         CKey key = DecodeSecret(strSecret);
         if (!key.IsValid()) {
             throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY,
                                "Invalid private key encoding");
         }
 
         CPubKey pubkey = key.GetPubKey();
         CHECK_NONFATAL(key.VerifyPubKey(pubkey));
         CKeyID vchAddress = pubkey.GetID();
         {
             pwallet->MarkDirty();
 
             // We don't know which corresponding address will be used;
             // label all new addresses, and label existing addresses if a
             // label was passed.
             for (const auto &dest : GetAllDestinationsForKey(pubkey)) {
                 if (!request.params[1].isNull() ||
                     !pwallet->FindAddressBookEntry(dest)) {
                     pwallet->SetAddressBook(dest, strLabel, "receive");
                 }
             }
 
             // Use timestamp of 1 to scan the whole chain
             if (!pwallet->ImportPrivKeys({{vchAddress, key}}, 1)) {
                 throw JSONRPCError(RPC_WALLET_ERROR,
                                    "Error adding key to wallet");
             }
         }
     }
     if (fRescan) {
         RescanWallet(*pwallet, reserver);
     }
 
     return NullUniValue;
 }
 
 UniValue abortrescan(const Config &config, const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     CWallet *const pwallet = wallet.get();
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "abortrescan",
         "Stops current wallet rescan triggered by an RPC call, e.g. by an "
         "importprivkey call.\n"
         "Note: Use \"getwalletinfo\" to query the scanning progress.\n",
         {},
         RPCResults{},
         RPCExamples{"\nImport a private key\n" +
                     HelpExampleCli("importprivkey", "\"mykey\"") +
                     "\nAbort the running wallet rescan\n" +
                     HelpExampleCli("abortrescan", "") +
                     "\nAs a JSON-RPC call\n" +
                     HelpExampleRpc("abortrescan", "")},
     }
         .Check(request);
 
     if (!pwallet->IsScanning() || pwallet->IsAbortingRescan()) {
         return false;
     }
     pwallet->AbortRescan();
     return true;
 }
 
 UniValue importaddress(const Config &config, const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     CWallet *const pwallet = wallet.get();
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "importaddress",
         "Adds an address or script (in hex) that can be watched as if it "
         "were in your wallet but cannot be used to spend. Requires a new "
         "wallet backup.\n"
         "\nNote: This call can take minutes to complete if rescan is true, "
         "during that time, other rpc calls\n"
         "may report that the imported address exists but related transactions "
         "are still missing, leading to temporarily incorrect/bogus balances "
         "and unspent outputs until rescan completes.\n"
         "If you have the full public key, you should call importpubkey instead "
         "of this.\n"
         "Hint: use importmulti to import more than one address.\n"
         "\nNote: If you import a non-standard raw script in hex form, outputs "
         "sending to it will be treated\n"
         "as change, and not show up in many RPCs.\n"
         "Note: Use \"getwalletinfo\" to query the scanning progress.\n",
         {
             {"address", RPCArg::Type::STR, RPCArg::Optional::NO,
              "The Bitcoin address (or hex-encoded script)"},
             {"label", RPCArg::Type::STR, /* default */ "\"\"",
              "An optional label"},
             {"rescan", RPCArg::Type::BOOL, /* default */ "true",
              "Rescan the wallet for transactions"},
             {"p2sh", RPCArg::Type::BOOL, /* default */ "false",
              "Add the P2SH version of the script as well"},
         },
         RPCResults{},
         RPCExamples{
             "\nImport an address with rescan\n" +
             HelpExampleCli("importaddress", "\"myaddress\"") +
             "\nImport using a label without rescan\n" +
             HelpExampleCli("importaddress", "\"myaddress\" \"testing\" false") +
             "\nAs a JSON-RPC call\n" +
             HelpExampleRpc("importaddress",
                            "\"myaddress\", \"testing\", false")},
     }
         .Check(request);
 
     EnsureLegacyScriptPubKeyMan(*pwallet, true);
 
     std::string strLabel;
     if (!request.params[1].isNull()) {
         strLabel = request.params[1].get_str();
     }
 
     // Whether to perform rescan after import
     bool fRescan = true;
     if (!request.params[2].isNull()) {
         fRescan = request.params[2].get_bool();
     }
 
     if (fRescan && pwallet->chain().havePruned()) {
         // Exit early and print an error.
         // If a block is pruned after this check, we will import the key(s),
         // but fail the rescan with a generic error.
         throw JSONRPCError(RPC_WALLET_ERROR,
                            "Rescan is disabled when blocks are pruned");
     }
 
     WalletRescanReserver reserver(*pwallet);
     if (fRescan && !reserver.reserve()) {
         throw JSONRPCError(
             RPC_WALLET_ERROR,
             "Wallet is currently rescanning. Abort existing rescan or wait.");
     }
 
     // Whether to import a p2sh version, too
     bool fP2SH = false;
     if (!request.params[3].isNull()) {
         fP2SH = request.params[3].get_bool();
     }
 
     {
         LOCK(pwallet->cs_wallet);
 
         CTxDestination dest =
             DecodeDestination(request.params[0].get_str(), wallet->chainParams);
         if (IsValidDestination(dest)) {
             if (fP2SH) {
                 throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY,
                                    "Cannot use the p2sh flag with an address - "
                                    "use a script instead");
             }
 
             pwallet->MarkDirty();
 
             pwallet->ImportScriptPubKeys(
                 strLabel, {GetScriptForDestination(dest)},
                 false /* have_solving_data */, true /* apply_label */,
                 1 /* timestamp */);
         } else if (IsHex(request.params[0].get_str())) {
             std::vector<uint8_t> data(ParseHex(request.params[0].get_str()));
             CScript redeem_script(data.begin(), data.end());
 
             std::set<CScript> scripts = {redeem_script};
             pwallet->ImportScripts(scripts, 0 /* timestamp */);
 
             if (fP2SH) {
                 scripts.insert(GetScriptForDestination(
                     ScriptHash(CScriptID(redeem_script))));
             }
 
             pwallet->ImportScriptPubKeys(
                 strLabel, scripts, false /* have_solving_data */,
                 true /* apply_label */, 1 /* timestamp */);
         } else {
             throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY,
                                "Invalid Bitcoin address or script");
         }
     }
     if (fRescan) {
         RescanWallet(*pwallet, reserver);
         {
             LOCK(pwallet->cs_wallet);
             pwallet->ReacceptWalletTransactions();
         }
     }
 
     return NullUniValue;
 }
 
 UniValue importprunedfunds(const Config &config,
                            const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     CWallet *const pwallet = wallet.get();
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "importprunedfunds",
         "Imports funds without rescan. Corresponding address or script must "
         "previously be included in wallet. Aimed towards pruned wallets. The "
         "end-user is responsible to import additional transactions that "
         "subsequently spend the imported outputs or rescan after the point in "
         "the blockchain the transaction is included.\n",
         {
             {"rawtransaction", RPCArg::Type::STR_HEX, RPCArg::Optional::NO,
              "A raw transaction in hex funding an already-existing address in "
              "wallet"},
             {"txoutproof", RPCArg::Type::STR_HEX, RPCArg::Optional::NO,
              "The hex output from gettxoutproof that contains the transaction"},
         },
         RPCResults{},
         RPCExamples{""},
     }
         .Check(request);
 
     CMutableTransaction tx;
     if (!DecodeHexTx(tx, request.params[0].get_str())) {
         throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "TX decode failed");
     }
     uint256 txid = tx.GetId();
     CWalletTx wtx(pwallet, MakeTransactionRef(std::move(tx)));
 
     CDataStream ssMB(ParseHexV(request.params[1], "proof"), SER_NETWORK,
                      PROTOCOL_VERSION);
     CMerkleBlock merkleBlock;
     ssMB >> merkleBlock;
 
     // Search partial merkle tree in proof for our transaction and index in
     // valid block
     std::vector<uint256> vMatch;
     std::vector<size_t> vIndex;
     if (merkleBlock.txn.ExtractMatches(vMatch, vIndex) !=
         merkleBlock.header.hashMerkleRoot) {
         throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY,
                            "Something wrong with merkleblock");
     }
 
     LOCK(pwallet->cs_wallet);
     int height;
     if (!pwallet->chain().findAncestorByHash(pwallet->GetLastBlockHash(),
                                              merkleBlock.header.GetHash(),
                                              FoundBlock().height(height))) {
         throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY,
                            "Block not found in chain");
     }
 
     std::vector<uint256>::const_iterator it;
     if ((it = std::find(vMatch.begin(), vMatch.end(), txid)) == vMatch.end()) {
         throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY,
                            "Transaction given doesn't exist in proof");
     }
 
     size_t txnIndex = vIndex[it - vMatch.begin()];
 
     CWalletTx::Confirmation confirm(CWalletTx::Status::CONFIRMED, height,
                                     merkleBlock.header.GetHash(), txnIndex);
     wtx.m_confirm = confirm;
 
     if (pwallet->IsMine(*wtx.tx)) {
         pwallet->AddToWallet(wtx, false);
         return NullUniValue;
     }
 
     throw JSONRPCError(
         RPC_INVALID_ADDRESS_OR_KEY,
         "No addresses in wallet correspond to included transaction");
 }
 
 UniValue removeprunedfunds(const Config &config,
                            const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     CWallet *const pwallet = wallet.get();
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "removeprunedfunds",
         "Deletes the specified transaction from the wallet. Meant for use "
         "with pruned wallets and as a companion to importprunedfunds. This "
         "will affect wallet balances.\n",
         {
             {"txid", RPCArg::Type::STR_HEX, RPCArg::Optional::NO,
              "The hex-encoded id of the transaction you are deleting"},
         },
         RPCResults{},
         RPCExamples{HelpExampleCli("removeprunedfunds",
                                    "\"a8d0c0184dde994a09ec054286f1ce581bebf4644"
                                    "6a512166eae7628734ea0a5\"") +
                     "\nAs a JSON-RPC call\n" +
                     HelpExampleRpc("removeprunedfunds",
                                    "\"a8d0c0184dde994a09ec054286f1ce581bebf4644"
                                    "6a512166eae7628734ea0a5\"")},
     }
         .Check(request);
 
     LOCK(pwallet->cs_wallet);
 
     TxId txid(ParseHashV(request.params[0], "txid"));
     std::vector<TxId> txIds;
     txIds.push_back(txid);
     std::vector<TxId> txIdsOut;
 
     if (pwallet->ZapSelectTx(txIds, txIdsOut) != DBErrors::LOAD_OK) {
         throw JSONRPCError(RPC_WALLET_ERROR,
                            "Could not properly delete the transaction.");
     }
 
     if (txIdsOut.empty()) {
         throw JSONRPCError(RPC_INVALID_PARAMETER,
                            "Transaction does not exist in wallet.");
     }
 
     return NullUniValue;
 }
 
 UniValue importpubkey(const Config &config, const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     CWallet *const pwallet = wallet.get();
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "importpubkey",
         "Adds a public key (in hex) that can be watched as if it were in "
         "your wallet but cannot be used to spend. Requires a new wallet "
         "backup.\n"
         "Hint: use importmulti to import more than one public key.\n"
         "\nNote: This call can take minutes to complete if rescan is true, "
         "during that time, other rpc calls\n"
         "may report that the imported pubkey exists but related transactions "
         "are still missing, leading to temporarily incorrect/bogus balances "
         "and unspent outputs until rescan completes.\n"
         "Note: Use \"getwalletinfo\" to query the scanning progress.\n",
         {
             {"pubkey", RPCArg::Type::STR, RPCArg::Optional::NO,
              "The hex-encoded public key"},
             {"label", RPCArg::Type::STR, /* default */ "\"\"",
              "An optional label"},
             {"rescan", RPCArg::Type::BOOL, /* default */ "true",
              "Rescan the wallet for transactions"},
         },
         RPCResults{},
         RPCExamples{
             "\nImport a public key with rescan\n" +
             HelpExampleCli("importpubkey", "\"mypubkey\"") +
             "\nImport using a label without rescan\n" +
             HelpExampleCli("importpubkey", "\"mypubkey\" \"testing\" false") +
             "\nAs a JSON-RPC call\n" +
             HelpExampleRpc("importpubkey", "\"mypubkey\", \"testing\", false")},
     }
         .Check(request);
 
     EnsureLegacyScriptPubKeyMan(*wallet, true);
 
     std::string strLabel;
     if (!request.params[1].isNull()) {
         strLabel = request.params[1].get_str();
     }
 
     // Whether to perform rescan after import
     bool fRescan = true;
     if (!request.params[2].isNull()) {
         fRescan = request.params[2].get_bool();
     }
 
     if (fRescan && pwallet->chain().havePruned()) {
         // Exit early and print an error.
         // If a block is pruned after this check, we will import the key(s),
         // but fail the rescan with a generic error.
         throw JSONRPCError(RPC_WALLET_ERROR,
                            "Rescan is disabled when blocks are pruned");
     }
 
     WalletRescanReserver reserver(*pwallet);
     if (fRescan && !reserver.reserve()) {
         throw JSONRPCError(
             RPC_WALLET_ERROR,
             "Wallet is currently rescanning. Abort existing rescan or wait.");
     }
 
     if (!IsHex(request.params[0].get_str())) {
         throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY,
                            "Pubkey must be a hex string");
     }
     std::vector<uint8_t> data(ParseHex(request.params[0].get_str()));
     CPubKey pubKey(data.begin(), data.end());
     if (!pubKey.IsFullyValid()) {
         throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY,
                            "Pubkey is not a valid public key");
     }
 
     {
         LOCK(pwallet->cs_wallet);
 
         std::set<CScript> script_pub_keys;
         for (const auto &dest : GetAllDestinationsForKey(pubKey)) {
             script_pub_keys.insert(GetScriptForDestination(dest));
         }
 
         pwallet->MarkDirty();
 
         pwallet->ImportScriptPubKeys(strLabel, script_pub_keys,
                                      true /* have_solving_data */,
                                      true /* apply_label */, 1 /* timestamp */);
 
         pwallet->ImportPubKeys({pubKey.GetID()}, {{pubKey.GetID(), pubKey}},
                                {} /* key_origins */, false /* add_keypool */,
                                false /* internal */, 1 /* timestamp */);
     }
     if (fRescan) {
         RescanWallet(*pwallet, reserver);
         {
             LOCK(pwallet->cs_wallet);
             pwallet->ReacceptWalletTransactions();
         }
     }
 
     return NullUniValue;
 }
 
 UniValue importwallet(const Config &config, const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     CWallet *const pwallet = wallet.get();
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "importwallet",
         "Imports keys from a wallet dump file (see dumpwallet). Requires a "
         "new wallet backup to include imported keys.\n"
         "Note: Use \"getwalletinfo\" to query the scanning progress.\n",
         {
             {"filename", RPCArg::Type::STR, RPCArg::Optional::NO,
              "The wallet file"},
         },
         RPCResults{},
         RPCExamples{"\nDump the wallet\n" +
                     HelpExampleCli("dumpwallet", "\"test\"") +
                     "\nImport the wallet\n" +
                     HelpExampleCli("importwallet", "\"test\"") +
                     "\nImport using the json rpc call\n" +
                     HelpExampleRpc("importwallet", "\"test\"")},
     }
         .Check(request);
 
     EnsureLegacyScriptPubKeyMan(*wallet, true);
 
     if (pwallet->chain().havePruned()) {
         // Exit early and print an error.
         // If a block is pruned after this check, we will import the key(s),
         // but fail the rescan with a generic error.
         throw JSONRPCError(
             RPC_WALLET_ERROR,
             "Importing wallets is disabled when blocks are pruned");
     }
 
     WalletRescanReserver reserver(*pwallet);
     if (!reserver.reserve()) {
         throw JSONRPCError(
             RPC_WALLET_ERROR,
             "Wallet is currently rescanning. Abort existing rescan or wait.");
     }
 
     int64_t nTimeBegin = 0;
     bool fGood = true;
     {
         LOCK(pwallet->cs_wallet);
 
         EnsureWalletIsUnlocked(pwallet);
 
         fsbridge::ifstream file;
         file.open(request.params[0].get_str(), std::ios::in | std::ios::ate);
         if (!file.is_open()) {
             throw JSONRPCError(RPC_INVALID_PARAMETER,
                                "Cannot open wallet dump file");
         }
         CHECK_NONFATAL(pwallet->chain().findBlock(
             pwallet->GetLastBlockHash(), FoundBlock().time(nTimeBegin)));
 
         int64_t nFilesize = std::max<int64_t>(1, file.tellg());
         file.seekg(0, file.beg);
 
         // Use uiInterface.ShowProgress instead of pwallet.ShowProgress because
         // pwallet.ShowProgress has a cancel button tied to AbortRescan which we
         // don't want for this progress bar showing the import progress.
         // uiInterface.ShowProgress does not have a cancel button.
 
         // show progress dialog in GUI
         pwallet->chain().showProgress(
             strprintf("%s " + _("Importing...").translated,
                       pwallet->GetDisplayName()),
             0, false);
         std::vector<std::tuple<CKey, int64_t, bool, std::string>> keys;
         std::vector<std::pair<CScript, int64_t>> scripts;
         while (file.good()) {
             pwallet->chain().showProgress(
                 "",
                 std::max(1, std::min<int>(50, 100 * double(file.tellg()) /
                                                   double(nFilesize))),
                 false);
             std::string line;
             std::getline(file, line);
             if (line.empty() || line[0] == '#') {
                 continue;
             }
 
             std::vector<std::string> vstr;
             boost::split(vstr, line, boost::is_any_of(" "));
             if (vstr.size() < 2) {
                 continue;
             }
             CKey key = DecodeSecret(vstr[0]);
             if (key.IsValid()) {
                 int64_t nTime = ParseISO8601DateTime(vstr[1]);
                 std::string strLabel;
                 bool fLabel = true;
                 for (size_t nStr = 2; nStr < vstr.size(); nStr++) {
                     if (vstr[nStr].front() == '#') {
                         break;
                     }
                     if (vstr[nStr] == "change=1") {
                         fLabel = false;
                     }
                     if (vstr[nStr] == "reserve=1") {
                         fLabel = false;
                     }
                     if (vstr[nStr].substr(0, 6) == "label=") {
                         strLabel = DecodeDumpString(vstr[nStr].substr(6));
                         fLabel = true;
                     }
                 }
                 keys.push_back(std::make_tuple(key, nTime, fLabel, strLabel));
             } else if (IsHex(vstr[0])) {
                 std::vector<uint8_t> vData(ParseHex(vstr[0]));
                 CScript script = CScript(vData.begin(), vData.end());
                 int64_t birth_time = ParseISO8601DateTime(vstr[1]);
                 scripts.push_back(
                     std::pair<CScript, int64_t>(script, birth_time));
             }
         }
         file.close();
         // We now know whether we are importing private keys, so we can error if
         // private keys are disabled
         if (keys.size() > 0 &&
             pwallet->IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS)) {
             // hide progress dialog in GUI
             pwallet->chain().showProgress("", 100, false);
             throw JSONRPCError(
                 RPC_WALLET_ERROR,
                 "Importing wallets is disabled when private keys are disabled");
         }
         double total = double(keys.size() + scripts.size());
         double progress = 0;
         for (const auto &key_tuple : keys) {
             pwallet->chain().showProgress(
                 "",
                 std::max(50, std::min<int>(75, 100 * progress / total) + 50),
                 false);
             const CKey &key = std::get<0>(key_tuple);
             int64_t time = std::get<1>(key_tuple);
             bool has_label = std::get<2>(key_tuple);
             std::string label = std::get<3>(key_tuple);
 
             CPubKey pubkey = key.GetPubKey();
             CHECK_NONFATAL(key.VerifyPubKey(pubkey));
             CKeyID keyid = pubkey.GetID();
 
             pwallet->WalletLogPrintf("Importing %s...\n",
                                      EncodeDestination(PKHash(keyid), config));
 
             if (!pwallet->ImportPrivKeys({{keyid, key}}, time)) {
                 pwallet->WalletLogPrintf(
                     "Error importing key for %s\n",
                     EncodeDestination(PKHash(keyid), config));
                 fGood = false;
                 continue;
             }
 
             if (has_label) {
                 pwallet->SetAddressBook(PKHash(keyid), label, "receive");
             }
 
             nTimeBegin = std::min(nTimeBegin, time);
             progress++;
         }
         for (const auto &script_pair : scripts) {
             pwallet->chain().showProgress(
                 "",
                 std::max(50, std::min<int>(75, 100 * progress / total) + 50),
                 false);
             const CScript &script = script_pair.first;
             int64_t time = script_pair.second;
 
             if (!pwallet->ImportScripts({script}, time)) {
                 pwallet->WalletLogPrintf("Error importing script %s\n",
                                          HexStr(script));
                 fGood = false;
                 continue;
             }
             if (time > 0) {
                 nTimeBegin = std::min(nTimeBegin, time);
             }
 
             progress++;
         }
 
         // hide progress dialog in GUI
         pwallet->chain().showProgress("", 100, false);
     }
     // hide progress dialog in GUI
     pwallet->chain().showProgress("", 100, false);
     RescanWallet(*pwallet, reserver, nTimeBegin, false /* update */);
     pwallet->MarkDirty();
 
     if (!fGood) {
         throw JSONRPCError(RPC_WALLET_ERROR,
                            "Error adding some keys/scripts to wallet");
     }
 
     return NullUniValue;
 }
 
 UniValue dumpprivkey(const Config &config, const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     const CWallet *const pwallet = wallet.get();
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "dumpprivkey",
         "Reveals the private key corresponding to 'address'.\n"
         "Then the importprivkey can be used with this output\n",
         {
             {"address", RPCArg::Type::STR, RPCArg::Optional::NO,
              "The bitcoin address for the private key"},
         },
         RPCResult{RPCResult::Type::STR, "key", "The private key"},
         RPCExamples{HelpExampleCli("dumpprivkey", "\"myaddress\"") +
                     HelpExampleCli("importprivkey", "\"mykey\"") +
                     HelpExampleRpc("dumpprivkey", "\"myaddress\"")},
     }
         .Check(request);
 
     LegacyScriptPubKeyMan &spk_man = EnsureLegacyScriptPubKeyMan(*wallet);
 
     LOCK2(pwallet->cs_wallet, spk_man.cs_KeyStore);
 
     EnsureWalletIsUnlocked(pwallet);
 
     std::string strAddress = request.params[0].get_str();
     CTxDestination dest = DecodeDestination(strAddress, wallet->chainParams);
     if (!IsValidDestination(dest)) {
         throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY,
                            "Invalid Bitcoin address");
     }
     auto keyid = GetKeyForDestination(spk_man, dest);
     if (keyid.IsNull()) {
         throw JSONRPCError(RPC_TYPE_ERROR, "Address does not refer to a key");
     }
     CKey vchSecret;
     if (!spk_man.GetKey(keyid, vchSecret)) {
         throw JSONRPCError(RPC_WALLET_ERROR, "Private key for address " +
                                                  strAddress + " is not known");
     }
     return EncodeSecret(vchSecret);
 }
 
 UniValue dumpwallet(const Config &config, const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const pwallet =
         GetWalletForJSONRPCRequest(request);
     if (!EnsureWalletIsAvailable(pwallet.get(), request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "dumpwallet",
         "Dumps all wallet keys in a human-readable format to a server-side "
         "file. This does not allow overwriting existing files.\n"
         "Imported scripts are included in the dumpsfile, but corresponding "
         "addresses may not be added automatically by importwallet.\n"
         "Note that if your wallet contains keys which are not derived from "
         "your HD seed (e.g. imported keys), these are not covered by\n"
         "only backing up the seed itself, and must be backed up too (e.g. "
         "ensure you back up the whole dumpfile).\n",
         {
             {"filename", RPCArg::Type::STR, RPCArg::Optional::NO,
              "The filename with path (either absolute or relative to "
              "bitcoind)"},
         },
         RPCResult{RPCResult::Type::OBJ,
                   "",
                   "",
                   {
                       {RPCResult::Type::STR, "filename",
                        "The filename with full absolute path"},
                   }},
         RPCExamples{HelpExampleCli("dumpwallet", "\"test\"") +
                     HelpExampleRpc("dumpwallet", "\"test\"")},
     }
         .Check(request);
 
     CWallet &wallet = *pwallet;
     LegacyScriptPubKeyMan &spk_man = EnsureLegacyScriptPubKeyMan(wallet);
 
     // Make sure the results are valid at least up to the most recent block
     // the user could have gotten from another RPC command prior to now
     wallet.BlockUntilSyncedToCurrentChain();
 
     LOCK2(wallet.cs_wallet, spk_man.cs_KeyStore);
 
     EnsureWalletIsUnlocked(&wallet);
 
     fs::path filepath = request.params[0].get_str();
     filepath = fs::absolute(filepath);
 
     /**
      * Prevent arbitrary files from being overwritten. There have been reports
      * that users have overwritten wallet files this way:
      * https://github.com/bitcoin/bitcoin/issues/9934
      * It may also avoid other security issues.
      */
     if (fs::exists(filepath)) {
         throw JSONRPCError(RPC_INVALID_PARAMETER,
                            filepath.string() + " already exists. If you are "
                                                "sure this is what you want, "
                                                "move it out of the way first");
     }
 
     fsbridge::ofstream file;
     file.open(filepath);
     if (!file.is_open()) {
         throw JSONRPCError(RPC_INVALID_PARAMETER,
                            "Cannot open wallet dump file");
     }
 
     std::map<CKeyID, int64_t> mapKeyBirth;
     const std::map<CKeyID, int64_t> &mapKeyPool = spk_man.GetAllReserveKeys();
     wallet.GetKeyBirthTimes(mapKeyBirth);
 
     std::set<CScriptID> scripts = spk_man.GetCScripts();
 
     // sort time/key pairs
     std::vector<std::pair<int64_t, CKeyID>> vKeyBirth;
     for (const auto &entry : mapKeyBirth) {
         vKeyBirth.push_back(std::make_pair(entry.second, entry.first));
     }
     mapKeyBirth.clear();
     std::sort(vKeyBirth.begin(), vKeyBirth.end());
 
     // produce output
     file << strprintf("# Wallet dump created by Bitcoin %s\n", CLIENT_BUILD);
     file << strprintf("# * Created on %s\n", FormatISO8601DateTime(GetTime()));
     file << strprintf("# * Best block at time of backup was %i (%s),\n",
                       wallet.GetLastBlockHeight(),
                       wallet.GetLastBlockHash().ToString());
     int64_t block_time = 0;
     CHECK_NONFATAL(wallet.chain().findBlock(wallet.GetLastBlockHash(),
                                             FoundBlock().time(block_time)));
     file << strprintf("#   mined on %s\n", FormatISO8601DateTime(block_time));
     file << "\n";
 
     // add the base58check encoded extended master if the wallet uses HD
     CKeyID seed_id = spk_man.GetHDChain().seed_id;
     if (!seed_id.IsNull()) {
         CKey seed;
         if (spk_man.GetKey(seed_id, seed)) {
             CExtKey masterKey;
             masterKey.SetSeed(seed.begin(), seed.size());
 
             file << "# extended private masterkey: " << EncodeExtKey(masterKey)
                  << "\n\n";
         }
     }
     for (std::vector<std::pair<int64_t, CKeyID>>::const_iterator it =
              vKeyBirth.begin();
          it != vKeyBirth.end(); it++) {
         const CKeyID &keyid = it->second;
         std::string strTime = FormatISO8601DateTime(it->first);
         std::string strAddr;
         std::string strLabel;
         CKey key;
         if (spk_man.GetKey(keyid, key)) {
             file << strprintf("%s %s ", EncodeSecret(key), strTime);
             if (GetWalletAddressesForKey(config, &spk_man, &wallet, keyid,
                                          strAddr, strLabel)) {
                 file << strprintf("label=%s", strLabel);
             } else if (keyid == seed_id) {
                 file << "hdseed=1";
             } else if (mapKeyPool.count(keyid)) {
                 file << "reserve=1";
             } else if (spk_man.mapKeyMetadata[keyid].hdKeypath == "s") {
                 file << "inactivehdseed=1";
             } else {
                 file << "change=1";
             }
             file << strprintf(
                 " # addr=%s%s\n", strAddr,
                 (spk_man.mapKeyMetadata[keyid].has_key_origin
                      ? " hdkeypath=" +
                            WriteHDKeypath(
                                spk_man.mapKeyMetadata[keyid].key_origin.path)
                      : ""));
         }
     }
     file << "\n";
     for (const CScriptID &scriptid : scripts) {
         CScript script;
         std::string create_time = "0";
         std::string address = EncodeDestination(ScriptHash(scriptid), config);
         // get birth times for scripts with metadata
         auto it = spk_man.m_script_metadata.find(scriptid);
         if (it != spk_man.m_script_metadata.end()) {
             create_time = FormatISO8601DateTime(it->second.nCreateTime);
         }
         if (spk_man.GetCScript(scriptid, script)) {
             file << strprintf("%s %s script=1",
                               HexStr(script.begin(), script.end()),
                               create_time);
             file << strprintf(" # addr=%s\n", address);
         }
     }
     file << "\n";
     file << "# End of dump\n";
     file.close();
 
     UniValue reply(UniValue::VOBJ);
     reply.pushKV("filename", filepath.string());
 
     return reply;
 }
 
 struct ImportData {
     // Input data
     //! Provided redeemScript; will be moved to `import_scripts` if relevant.
     std::unique_ptr<CScript> redeemscript;
 
     // Output data
     std::set<CScript> import_scripts;
     //! Import these private keys if available (the value indicates whether if
     //! the key is required for solvability)
     std::map<CKeyID, bool> used_keys;
     std::map<CKeyID, std::pair<CPubKey, KeyOriginInfo>> key_origins;
 };
 
 enum class ScriptContext {
     //! Top-level scriptPubKey
     TOP,
     //! P2SH redeemScript
     P2SH,
 };
 
 // Analyse the provided scriptPubKey, determining which keys and which redeem
 // scripts from the ImportData struct are needed to spend it, and mark them as
 // used. Returns an error string, or the empty string for success.
 static std::string RecurseImportData(const CScript &script,
                                      ImportData &import_data,
                                      const ScriptContext script_ctx) {
     // Use Solver to obtain script type and parsed pubkeys or hashes:
     std::vector<std::vector<uint8_t>> solverdata;
     txnouttype script_type = Solver(script, solverdata);
 
     switch (script_type) {
         case TX_PUBKEY: {
             CPubKey pubkey(solverdata[0].begin(), solverdata[0].end());
             import_data.used_keys.emplace(pubkey.GetID(), false);
             return "";
         }
         case TX_PUBKEYHASH: {
             CKeyID id = CKeyID(uint160(solverdata[0]));
             import_data.used_keys[id] = true;
             return "";
         }
         case TX_SCRIPTHASH: {
             if (script_ctx == ScriptContext::P2SH) {
                 throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY,
                                    "Trying to nest P2SH inside another P2SH");
             }
             CHECK_NONFATAL(script_ctx == ScriptContext::TOP);
             CScriptID id = CScriptID(uint160(solverdata[0]));
             // Remove redeemscript from import_data to check for superfluous
             // script later.
             auto subscript = std::move(import_data.redeemscript);
             if (!subscript) {
                 return "missing redeemscript";
             }
             if (CScriptID(*subscript) != id) {
                 return "redeemScript does not match the scriptPubKey";
             }
             import_data.import_scripts.emplace(*subscript);
             return RecurseImportData(*subscript, import_data,
                                      ScriptContext::P2SH);
         }
         case TX_MULTISIG: {
             for (size_t i = 1; i + 1 < solverdata.size(); ++i) {
                 CPubKey pubkey(solverdata[i].begin(), solverdata[i].end());
                 import_data.used_keys.emplace(pubkey.GetID(), false);
             }
             return "";
         }
         case TX_NULL_DATA:
             return "unspendable script";
         case TX_NONSTANDARD:
         default:
             return "unrecognized script";
     }
 }
 
 static UniValue ProcessImportLegacy(
     CWallet *const pwallet, ImportData &import_data,
     std::map<CKeyID, CPubKey> &pubkey_map, std::map<CKeyID, CKey> &privkey_map,
     std::set<CScript> &script_pub_keys, bool &have_solving_data,
     const UniValue &data, std::vector<CKeyID> &ordered_pubkeys) {
     UniValue warnings(UniValue::VARR);
 
     // First ensure scriptPubKey has either a script or JSON with "address"
     // string
     const UniValue &scriptPubKey = data["scriptPubKey"];
     bool isScript = scriptPubKey.getType() == UniValue::VSTR;
     if (!isScript && !(scriptPubKey.getType() == UniValue::VOBJ &&
                        scriptPubKey.exists("address"))) {
         throw JSONRPCError(RPC_INVALID_PARAMETER,
                            "scriptPubKey must be string with script or JSON "
                            "with address string");
     }
     const std::string &output =
         isScript ? scriptPubKey.get_str() : scriptPubKey["address"].get_str();
 
     // Optional fields.
     const std::string &strRedeemScript =
         data.exists("redeemscript") ? data["redeemscript"].get_str() : "";
     const UniValue &pubKeys =
         data.exists("pubkeys") ? data["pubkeys"].get_array() : UniValue();
     const UniValue &keys =
         data.exists("keys") ? data["keys"].get_array() : UniValue();
     const bool internal =
         data.exists("internal") ? data["internal"].get_bool() : false;
     const bool watchOnly =
         data.exists("watchonly") ? data["watchonly"].get_bool() : false;
 
     if (data.exists("range")) {
         throw JSONRPCError(
             RPC_INVALID_PARAMETER,
             "Range should not be specified for a non-descriptor import");
     }
 
     // Generate the script and destination for the scriptPubKey provided
     CScript script;
     if (!isScript) {
         CTxDestination dest = DecodeDestination(output, pwallet->chainParams);
         if (!IsValidDestination(dest)) {
             throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY,
                                "Invalid address \"" + output + "\"");
         }
         script = GetScriptForDestination(dest);
     } else {
         if (!IsHex(output)) {
             throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY,
                                "Invalid scriptPubKey \"" + output + "\"");
         }
         std::vector<uint8_t> vData(ParseHex(output));
         script = CScript(vData.begin(), vData.end());
         CTxDestination dest;
         if (!ExtractDestination(script, dest) && !internal) {
             throw JSONRPCError(RPC_INVALID_PARAMETER,
                                "Internal must be set to true for "
                                "nonstandard scriptPubKey imports.");
         }
     }
     script_pub_keys.emplace(script);
 
     // Parse all arguments
     if (strRedeemScript.size()) {
         if (!IsHex(strRedeemScript)) {
             throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY,
                                "Invalid redeem script \"" + strRedeemScript +
                                    "\": must be hex string");
         }
         auto parsed_redeemscript = ParseHex(strRedeemScript);
         import_data.redeemscript = std::make_unique<CScript>(
             parsed_redeemscript.begin(), parsed_redeemscript.end());
     }
     for (size_t i = 0; i < pubKeys.size(); ++i) {
         const auto &str = pubKeys[i].get_str();
         if (!IsHex(str)) {
             throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY,
                                "Pubkey \"" + str + "\" must be a hex string");
         }
         auto parsed_pubkey = ParseHex(str);
         CPubKey pubkey(parsed_pubkey.begin(), parsed_pubkey.end());
         if (!pubkey.IsFullyValid()) {
             throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY,
                                "Pubkey \"" + str +
                                    "\" is not a valid public key");
         }
         pubkey_map.emplace(pubkey.GetID(), pubkey);
         ordered_pubkeys.push_back(pubkey.GetID());
     }
     for (size_t i = 0; i < keys.size(); ++i) {
         const auto &str = keys[i].get_str();
         CKey key = DecodeSecret(str);
         if (!key.IsValid()) {
             throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY,
                                "Invalid private key encoding");
         }
         CPubKey pubkey = key.GetPubKey();
         CKeyID id = pubkey.GetID();
         if (pubkey_map.count(id)) {
             pubkey_map.erase(id);
         }
         privkey_map.emplace(id, key);
     }
 
     // Verify and process input data
     have_solving_data =
         import_data.redeemscript || pubkey_map.size() || privkey_map.size();
     if (have_solving_data) {
         // Match up data in import_data with the scriptPubKey in script.
         auto error = RecurseImportData(script, import_data, ScriptContext::TOP);
 
         // Verify whether the watchonly option corresponds to the
         // availability of private keys.
         bool spendable = std::all_of(
             import_data.used_keys.begin(), import_data.used_keys.end(),
             [&](const std::pair<CKeyID, bool> &used_key) {
                 return privkey_map.count(used_key.first) > 0;
             });
         if (!watchOnly && !spendable) {
             warnings.push_back("Some private keys are missing, outputs "
                                "will be considered watchonly. If this is "
                                "intentional, specify the watchonly flag.");
         }
         if (watchOnly && spendable) {
             warnings.push_back(
                 "All private keys are provided, outputs will be considered "
                 "spendable. If this is intentional, do not specify the "
                 "watchonly flag.");
         }
 
         // Check that all required keys for solvability are provided.
         if (error.empty()) {
             for (const auto &require_key : import_data.used_keys) {
                 if (!require_key.second) {
                     // Not a required key
                     continue;
                 }
 
                 if (pubkey_map.count(require_key.first) == 0 &&
                     privkey_map.count(require_key.first) == 0) {
                     error = "some required keys are missing";
                 }
             }
         }
 
         if (!error.empty()) {
             warnings.push_back("Importing as non-solvable: " + error +
                                ". If this is intentional, don't provide "
                                "any keys, pubkeys or redeemscript.");
             import_data = ImportData();
             pubkey_map.clear();
             privkey_map.clear();
             have_solving_data = false;
         } else {
             // RecurseImportData() removes any relevant redeemscript from
             // import_data, so we can use that to discover if a superfluous
             // one was provided.
             if (import_data.redeemscript) {
                 warnings.push_back(
                     "Ignoring redeemscript as this is not a P2SH script.");
             }
             for (auto it = privkey_map.begin(); it != privkey_map.end();) {
                 auto oldit = it++;
                 if (import_data.used_keys.count(oldit->first) == 0) {
                     warnings.push_back("Ignoring irrelevant private key.");
                     privkey_map.erase(oldit);
                 }
             }
             for (auto it = pubkey_map.begin(); it != pubkey_map.end();) {
                 auto oldit = it++;
                 auto key_data_it = import_data.used_keys.find(oldit->first);
                 if (key_data_it == import_data.used_keys.end() ||
                     !key_data_it->second) {
                     warnings.push_back("Ignoring public key \"" +
                                        HexStr(oldit->first) +
                                        "\" as it doesn't appear inside P2PKH.");
                     pubkey_map.erase(oldit);
                 }
             }
         }
     }
 
     return warnings;
 }
 
 static UniValue ProcessImportDescriptor(ImportData &import_data,
                                         std::map<CKeyID, CPubKey> &pubkey_map,
                                         std::map<CKeyID, CKey> &privkey_map,
                                         std::set<CScript> &script_pub_keys,
                                         bool &have_solving_data,
                                         const UniValue &data,
                                         std::vector<CKeyID> &ordered_pubkeys) {
     UniValue warnings(UniValue::VARR);
 
     const std::string &descriptor = data["desc"].get_str();
     FlatSigningProvider keys;
     std::string error;
     auto parsed_desc =
         Parse(descriptor, keys, error, /* require_checksum = */ true);
     if (!parsed_desc) {
         throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, error);
     }
 
     have_solving_data = parsed_desc->IsSolvable();
     const bool watch_only =
         data.exists("watchonly") ? data["watchonly"].get_bool() : false;
 
     int64_t range_start = 0, range_end = 0;
     if (!parsed_desc->IsRange() && data.exists("range")) {
         throw JSONRPCError(
             RPC_INVALID_PARAMETER,
             "Range should not be specified for an un-ranged descriptor");
     } else if (parsed_desc->IsRange()) {
         if (!data.exists("range")) {
             throw JSONRPCError(
                 RPC_INVALID_PARAMETER,
                 "Descriptor is ranged, please specify the range");
         }
         std::tie(range_start, range_end) = ParseDescriptorRange(data["range"]);
     }
 
     const UniValue &priv_keys =
         data.exists("keys") ? data["keys"].get_array() : UniValue();
 
     // Expand all descriptors to get public keys and scripts, and private keys
     // if available.
     for (int i = range_start; i <= range_end; ++i) {
         FlatSigningProvider out_keys;
         std::vector<CScript> scripts_temp;
         parsed_desc->Expand(i, keys, scripts_temp, out_keys);
         std::copy(scripts_temp.begin(), scripts_temp.end(),
                   std::inserter(script_pub_keys, script_pub_keys.end()));
         for (const auto &key_pair : out_keys.pubkeys) {
             ordered_pubkeys.push_back(key_pair.first);
         }
 
         for (const auto &x : out_keys.scripts) {
             import_data.import_scripts.emplace(x.second);
         }
 
         parsed_desc->ExpandPrivate(i, keys, out_keys);
 
         std::copy(out_keys.pubkeys.begin(), out_keys.pubkeys.end(),
                   std::inserter(pubkey_map, pubkey_map.end()));
         std::copy(out_keys.keys.begin(), out_keys.keys.end(),
                   std::inserter(privkey_map, privkey_map.end()));
         import_data.key_origins.insert(out_keys.origins.begin(),
                                        out_keys.origins.end());
     }
 
     for (size_t i = 0; i < priv_keys.size(); ++i) {
         const auto &str = priv_keys[i].get_str();
         CKey key = DecodeSecret(str);
         if (!key.IsValid()) {
             throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY,
                                "Invalid private key encoding");
         }
         CPubKey pubkey = key.GetPubKey();
         CKeyID id = pubkey.GetID();
 
         // Check if this private key corresponds to a public key from the
         // descriptor
         if (!pubkey_map.count(id)) {
             warnings.push_back("Ignoring irrelevant private key.");
         } else {
             privkey_map.emplace(id, key);
         }
     }
 
     // Check if all the public keys have corresponding private keys in the
     // import for spendability. This does not take into account threshold
     // multisigs which could be spendable without all keys. Thus, threshold
     // multisigs without all keys will be considered not spendable here, even if
     // they are, perhaps triggering a false warning message. This is consistent
     // with the current wallet IsMine check.
     bool spendable =
         std::all_of(pubkey_map.begin(), pubkey_map.end(),
                     [&](const std::pair<CKeyID, CPubKey> &used_key) {
                         return privkey_map.count(used_key.first) > 0;
                     }) &&
         std::all_of(
             import_data.key_origins.begin(), import_data.key_origins.end(),
             [&](const std::pair<CKeyID, std::pair<CPubKey, KeyOriginInfo>>
                     &entry) { return privkey_map.count(entry.first) > 0; });
     if (!watch_only && !spendable) {
         warnings.push_back(
             "Some private keys are missing, outputs will be considered "
             "watchonly. If this is intentional, specify the watchonly flag.");
     }
     if (watch_only && spendable) {
         warnings.push_back("All private keys are provided, outputs will be "
                            "considered spendable. If this is intentional, do "
                            "not specify the watchonly flag.");
     }
 
     return warnings;
 }
 
 static UniValue ProcessImport(CWallet *const pwallet, const UniValue &data,
                               const int64_t timestamp)
     EXCLUSIVE_LOCKS_REQUIRED(pwallet->cs_wallet) {
     UniValue warnings(UniValue::VARR);
     UniValue result(UniValue::VOBJ);
 
     try {
         const bool internal =
             data.exists("internal") ? data["internal"].get_bool() : false;
         // Internal addresses should not have a label
         if (internal && data.exists("label")) {
             throw JSONRPCError(RPC_INVALID_PARAMETER,
                                "Internal addresses should not have a label");
         }
         const std::string &label =
             data.exists("label") ? data["label"].get_str() : "";
         const bool add_keypool =
             data.exists("keypool") ? data["keypool"].get_bool() : false;
 
         // Add to keypool only works with privkeys disabled
         if (add_keypool &&
             !pwallet->IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS)) {
             throw JSONRPCError(RPC_INVALID_PARAMETER,
                                "Keys can only be imported to the keypool when "
                                "private keys are disabled");
         }
 
         ImportData import_data;
         std::map<CKeyID, CPubKey> pubkey_map;
         std::map<CKeyID, CKey> privkey_map;
         std::set<CScript> script_pub_keys;
         std::vector<CKeyID> ordered_pubkeys;
         bool have_solving_data;
 
         if (data.exists("scriptPubKey") && data.exists("desc")) {
             throw JSONRPCError(
                 RPC_INVALID_PARAMETER,
                 "Both a descriptor and a scriptPubKey should not be provided.");
         } else if (data.exists("scriptPubKey")) {
             warnings = ProcessImportLegacy(
                 pwallet, import_data, pubkey_map, privkey_map, script_pub_keys,
                 have_solving_data, data, ordered_pubkeys);
         } else if (data.exists("desc")) {
             warnings = ProcessImportDescriptor(
                 import_data, pubkey_map, privkey_map, script_pub_keys,
                 have_solving_data, data, ordered_pubkeys);
         } else {
             throw JSONRPCError(
                 RPC_INVALID_PARAMETER,
                 "Either a descriptor or scriptPubKey must be provided.");
         }
 
         // If private keys are disabled, abort if private keys are being
         // imported
         if (pwallet->IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS) &&
             !privkey_map.empty()) {
             throw JSONRPCError(RPC_WALLET_ERROR,
                                "Cannot import private keys to a wallet with "
                                "private keys disabled");
         }
 
         // Check whether we have any work to do
         for (const CScript &script : script_pub_keys) {
             if (pwallet->IsMine(script) & ISMINE_SPENDABLE) {
                 throw JSONRPCError(RPC_WALLET_ERROR,
                                    "The wallet already contains the private "
                                    "key for this address or script (\"" +
                                        HexStr(script.begin(), script.end()) +
                                        "\")");
             }
         }
 
         // All good, time to import
         pwallet->MarkDirty();
         if (!pwallet->ImportScripts(import_data.import_scripts, timestamp)) {
             throw JSONRPCError(RPC_WALLET_ERROR,
                                "Error adding script to wallet");
         }
         if (!pwallet->ImportPrivKeys(privkey_map, timestamp)) {
             throw JSONRPCError(RPC_WALLET_ERROR, "Error adding key to wallet");
         }
         if (!pwallet->ImportPubKeys(ordered_pubkeys, pubkey_map,
                                     import_data.key_origins, add_keypool,
                                     internal, timestamp)) {
             throw JSONRPCError(RPC_WALLET_ERROR,
                                "Error adding address to wallet");
         }
         if (!pwallet->ImportScriptPubKeys(label, script_pub_keys,
                                           have_solving_data, !internal,
                                           timestamp)) {
             throw JSONRPCError(RPC_WALLET_ERROR,
                                "Error adding address to wallet");
         }
 
         result.pushKV("success", UniValue(true));
     } catch (const UniValue &e) {
         result.pushKV("success", UniValue(false));
         result.pushKV("error", e);
     } catch (...) {
         result.pushKV("success", UniValue(false));
         result.pushKV("error",
                       JSONRPCError(RPC_MISC_ERROR, "Missing required fields"));
     }
 
     if (warnings.size()) {
         result.pushKV("warnings", warnings);
     }
     return result;
 }
 
 static int64_t GetImportTimestamp(const UniValue &data, int64_t now) {
     if (data.exists("timestamp")) {
         const UniValue &timestamp = data["timestamp"];
         if (timestamp.isNum()) {
             return timestamp.get_int64();
         } else if (timestamp.isStr() && timestamp.get_str() == "now") {
             return now;
         }
         throw JSONRPCError(RPC_TYPE_ERROR,
                            strprintf("Expected number or \"now\" timestamp "
                                      "value for key. got type %s",
                                      uvTypeName(timestamp.type())));
     }
     throw JSONRPCError(RPC_TYPE_ERROR,
                        "Missing required timestamp field for key");
 }
 
 UniValue importmulti(const Config &config, const JSONRPCRequest &mainRequest) {
     std::shared_ptr<CWallet> const wallet =
         GetWalletForJSONRPCRequest(mainRequest);
     CWallet *const pwallet = wallet.get();
     if (!EnsureWalletIsAvailable(pwallet, mainRequest.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "importmulti",
         "\nImport addresses/scripts (with private or public keys, redeem "
         "script (P2SH)), optionally rescanning the blockchain from the "
         "earliest creation time of the imported scripts. Requires a new wallet "
         "backup.\n"
         "If an address/script is imported without all of the private keys "
         "required to spend from that address, it will be watchonly. The "
         "'watchonly' option must be set to true in this case or a warning will "
         "be returned.\n"
         "Conversely, if all the private keys are provided and the "
         "address/script is spendable, the watchonly option must be set to "
         "false, or a warning will be returned.\n"
         "Note: Use \"getwalletinfo\" to query the scanning progress.\n",
         {
             {"requests",
              RPCArg::Type::ARR,
              RPCArg::Optional::NO,
              "Data to be imported",
              {
                  {
                      "",
                      RPCArg::Type::OBJ,
                      RPCArg::Optional::OMITTED,
                      "",
                      {
                          {"desc", RPCArg::Type::STR, RPCArg::Optional::OMITTED,
                           "Descriptor to import. If using descriptor, do not "
                           "also provide address/scriptPubKey, scripts, or "
                           "pubkeys"},
                          {"scriptPubKey",
                           RPCArg::Type::STR,
                           RPCArg::Optional::NO,
                           "Type of scriptPubKey (string for script, json for "
                           "address). Should not be provided if using a "
                           "descriptor",
                           /* oneline_description */ "",
                           {"\"<script>\" | { \"address\":\"<address>\" }",
                            "string / json"}},
                          {"timestamp",
                           RPCArg::Type::NUM,
                           RPCArg::Optional::NO,
                           "Creation time of the key expressed in " +
                               UNIX_EPOCH_TIME +
                               ",\n"
                               "                                            "
                               "                  or the string \"now\" to "
                               "substitute the current synced blockchain time. "
                               "The "
                               "timestamp of the oldest\n"
                               "                                            "
                               "                  key will determine how far "
                               "back "
                               "blockchain rescans need to begin for missing "
                               "wallet "
                               "transactions.\n"
                               "                                            "
                               "                  \"now\" can be specified to "
                               "bypass scanning, for keys which are known to "
                               "never "
                               "have been used, and\n"
                               "                                            "
                               "                  0 can be specified to scan "
                               "the "
                               "entire blockchain. Blocks up to 2 hours before "
                               "the "
                               "earliest key\n"
                               "                                            "
                               "                  creation time of all keys "
                               "being "
                               "imported by the importmulti call will be "
                               "scanned.",
                           /* oneline_description */ "",
                           {"timestamp | \"now\"", "integer / string"}},
                          {"redeemscript", RPCArg::Type::STR,
                           RPCArg::Optional::OMITTED,
                           "Allowed only if the scriptPubKey is a P2SH "
                           "address/scriptPubKey"},
                          {"pubkeys",
                           RPCArg::Type::ARR,
                           /* default */ "empty array",
                           "Array of strings giving pubkeys to import. They "
                           "must occur in P2PKH scripts. They are not required "
                           "when the private key is also provided (see the "
                           "\"keys\" argument).",
                           {
                               {"pubKey", RPCArg::Type::STR,
                                RPCArg::Optional::OMITTED, ""},
                           }},
                          {"keys",
                           RPCArg::Type::ARR,
                           /* default */ "empty array",
                           "Array of strings giving private keys to import. The "
                           "corresponding public keys must occur in the output "
                           "or redeemscript.",
                           {
                               {"key", RPCArg::Type::STR,
                                RPCArg::Optional::OMITTED, ""},
                           }},
                          {"range", RPCArg::Type::RANGE,
                           RPCArg::Optional::OMITTED,
                           "If a ranged descriptor is used, this specifies the "
                           "end or the range (in the form [begin,end]) to "
                           "import"},
                          {"internal", RPCArg::Type::BOOL,
                           /* default */ "false",
                           "Stating whether matching outputs should be treated "
                           "as not incoming payments (also known as change)"},
                          {"watchonly", RPCArg::Type::BOOL,
                           /* default */ "false",
                           "Stating whether matching outputs should be "
                           "considered watchonly."},
                          {"label", RPCArg::Type::STR, /* default */ "''",
                           "Label to assign to the address, only allowed with "
                           "internal=false"},
                          {"keypool", RPCArg::Type::BOOL, /* default */ "false",
                           "Stating whether imported public keys should be "
                           "added to the keypool for when users request new "
                           "addresses. Only allowed when wallet private keys "
                           "are disabled"},
                      },
                  },
              },
              "\"requests\""},
             {"options",
              RPCArg::Type::OBJ,
              RPCArg::Optional::OMITTED_NAMED_ARG,
              "",
              {
                  {"rescan", RPCArg::Type::BOOL, /* default */ "true",
                   "Stating if should rescan the blockchain after all imports"},
              },
              "\"options\""},
         },
         RPCResult{RPCResult::Type::ARR,
                   "",
                   "Response is an array with the same size as the input that "
                   "has the execution result",
                   {
                       {RPCResult::Type::OBJ,
                        "",
                        "",
                        {
                            {RPCResult::Type::BOOL, "success", ""},
                            {RPCResult::Type::ARR,
                             "warnings",
                             /* optional */ true,
                             "",
                             {
                                 {RPCResult::Type::STR, "", ""},
                             }},
                            {RPCResult::Type::OBJ,
                             "error",
                             /* optional */ true,
                             "",
                             {
                                 {RPCResult::Type::ELISION, "", "JSONRPC error"},
                             }},
                        }},
                   }},
         RPCExamples{
             HelpExampleCli(
                 "importmulti",
                 "'[{ \"scriptPubKey\": { \"address\": \"<my address>\" }, "
                 "\"timestamp\":1455191478 }, "
                 "{ \"scriptPubKey\": { \"address\": \"<my 2nd address>\" "
                 "}, "
                 "\"label\": \"example 2\", \"timestamp\": 1455191480 }]'") +
             HelpExampleCli(
                 "importmulti",
                 "'[{ \"scriptPubKey\": { \"address\": \"<my address>\" }, "
                 "\"timestamp\":1455191478 }]' '{ \"rescan\": false}'")
 
         },
     }
         .Check(mainRequest);
 
     RPCTypeCheck(mainRequest.params, {UniValue::VARR, UniValue::VOBJ});
 
     EnsureLegacyScriptPubKeyMan(*wallet, true);
 
     const UniValue &requests = mainRequest.params[0];
 
     // Default options
     bool fRescan = true;
 
     if (!mainRequest.params[1].isNull()) {
         const UniValue &options = mainRequest.params[1];
 
         if (options.exists("rescan")) {
             fRescan = options["rescan"].get_bool();
         }
     }
 
     WalletRescanReserver reserver(*pwallet);
     if (fRescan && !reserver.reserve()) {
         throw JSONRPCError(
             RPC_WALLET_ERROR,
             "Wallet is currently rescanning. Abort existing rescan or wait.");
     }
 
     int64_t now = 0;
     bool fRunScan = false;
     int64_t nLowestTimestamp = 0;
     UniValue response(UniValue::VARR);
     {
         LOCK(pwallet->cs_wallet);
         EnsureWalletIsUnlocked(pwallet);
 
         // Verify all timestamps are present before importing any keys.
         CHECK_NONFATAL(pwallet->chain().findBlock(
             pwallet->GetLastBlockHash(),
             FoundBlock().time(nLowestTimestamp).mtpTime(now)));
         for (const UniValue &data : requests.getValues()) {
             GetImportTimestamp(data, now);
         }
 
         const int64_t minimumTimestamp = 1;
 
         for (const UniValue &data : requests.getValues()) {
             const int64_t timestamp =
                 std::max(GetImportTimestamp(data, now), minimumTimestamp);
             const UniValue result = ProcessImport(pwallet, data, timestamp);
             response.push_back(result);
 
             if (!fRescan) {
                 continue;
             }
 
             // If at least one request was successful then allow rescan.
             if (result["success"].get_bool()) {
                 fRunScan = true;
             }
 
             // Get the lowest timestamp.
             if (timestamp < nLowestTimestamp) {
                 nLowestTimestamp = timestamp;
             }
         }
     }
     if (fRescan && fRunScan && requests.size()) {
         int64_t scannedTime = pwallet->RescanFromTime(
             nLowestTimestamp, reserver, true /* update */);
         {
             LOCK(pwallet->cs_wallet);
             pwallet->ReacceptWalletTransactions();
         }
 
         if (pwallet->IsAbortingRescan()) {
             throw JSONRPCError(RPC_MISC_ERROR, "Rescan aborted by user.");
         }
         if (scannedTime > nLowestTimestamp) {
             std::vector<UniValue> results = response.getValues();
             response.clear();
             response.setArray();
             size_t i = 0;
             for (const UniValue &request : requests.getValues()) {
                 // If key creation date is within the successfully scanned
                 // range, or if the import result already has an error set, let
                 // the result stand unmodified. Otherwise replace the result
                 // with an error message.
                 if (scannedTime <= GetImportTimestamp(request, now) ||
                     results.at(i).exists("error")) {
                     response.push_back(results.at(i));
                 } else {
                     UniValue result = UniValue(UniValue::VOBJ);
                     result.pushKV("success", UniValue(false));
                     result.pushKV(
                         "error",
                         JSONRPCError(
                             RPC_MISC_ERROR,
                             strprintf(
                                 "Rescan failed for key with creation timestamp "
                                 "%d. There was an error reading a block from "
                                 "time %d, which is after or within %d seconds "
                                 "of key creation, and could contain "
                                 "transactions pertaining to the key. As a "
                                 "result, transactions and coins using this key "
                                 "may not appear in the wallet. This error "
                                 "could be caused by pruning or data corruption "
                                 "(see bitcoind log for details) and could be "
                                 "dealt with by downloading and rescanning the "
                                 "relevant blocks (see -reindex and -rescan "
                                 "options).",
                                 GetImportTimestamp(request, now),
                                 scannedTime - TIMESTAMP_WINDOW - 1,
                                 TIMESTAMP_WINDOW)));
                     response.push_back(std::move(result));
                 }
                 ++i;
             }
         }
     }
 
     return response;
 }
 
 static UniValue ProcessDescriptorImport(CWallet *const pwallet,
                                         const UniValue &data,
                                         const int64_t timestamp)
     EXCLUSIVE_LOCKS_REQUIRED(pwallet->cs_wallet) {
     UniValue warnings(UniValue::VARR);
     UniValue result(UniValue::VOBJ);
 
     try {
         if (!data.exists("desc")) {
             throw JSONRPCError(RPC_INVALID_PARAMETER, "Descriptor not found.");
         }
 
         const std::string &descriptor = data["desc"].get_str();
         const bool active =
             data.exists("active") ? data["active"].get_bool() : false;
         const bool internal =
             data.exists("internal") ? data["internal"].get_bool() : false;
         const std::string &label =
             data.exists("label") ? data["label"].get_str() : "";
 
         // Parse descriptor string
         FlatSigningProvider keys;
         std::string error;
         auto parsed_desc =
             Parse(descriptor, keys, error, /* require_checksum = */ true);
         if (!parsed_desc) {
             throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, error);
         }
 
         // Range check
         int64_t range_start = 0, range_end = 1, next_index = 0;
         if (!parsed_desc->IsRange() && data.exists("range")) {
             throw JSONRPCError(
                 RPC_INVALID_PARAMETER,
                 "Range should not be specified for an un-ranged descriptor");
         } else if (parsed_desc->IsRange()) {
             if (data.exists("range")) {
                 auto range = ParseDescriptorRange(data["range"]);
                 range_start = range.first;
                 // Specified range end is inclusive, but we need range end as
                 // exclusive
                 range_end = range.second + 1;
             } else {
                 warnings.push_back(
                     "Range not given, using default keypool range");
                 range_start = 0;
                 range_end = gArgs.GetArg("-keypool", DEFAULT_KEYPOOL_SIZE);
             }
             next_index = range_start;
 
             if (data.exists("next_index")) {
                 next_index = data["next_index"].get_int64();
                 // bound checks
                 if (next_index < range_start || next_index >= range_end) {
                     throw JSONRPCError(RPC_INVALID_PARAMETER,
                                        "next_index is out of range");
                 }
             }
         }
 
         // Active descriptors must be ranged
         if (active && !parsed_desc->IsRange()) {
             throw JSONRPCError(RPC_INVALID_PARAMETER,
                                "Active descriptors must be ranged");
         }
 
         // Ranged descriptors should not have a label
         if (data.exists("range") && data.exists("label")) {
             throw JSONRPCError(RPC_INVALID_PARAMETER,
                                "Ranged descriptors should not have a label");
         }
 
         // Internal addresses should not have a label either
         if (internal && data.exists("label")) {
             throw JSONRPCError(RPC_INVALID_PARAMETER,
                                "Internal addresses should not have a label");
         }
 
         // Combo descriptor check
         if (active && !parsed_desc->IsSingleType()) {
             throw JSONRPCError(RPC_WALLET_ERROR,
                                "Combo descriptors cannot be set to active");
         }
 
         // If the wallet disabled private keys, abort if private keys exist
         if (pwallet->IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS) &&
             !keys.keys.empty()) {
             throw JSONRPCError(RPC_WALLET_ERROR,
                                "Cannot import private keys to a wallet with "
                                "private keys disabled");
         }
 
         // Need to ExpandPrivate to check if private keys are available for all
         // pubkeys
         FlatSigningProvider expand_keys;
         std::vector<CScript> scripts;
         parsed_desc->Expand(0, keys, scripts, expand_keys);
         parsed_desc->ExpandPrivate(0, keys, expand_keys);
 
         // Check if all private keys are provided
         bool have_all_privkeys = !expand_keys.keys.empty();
         for (const auto &entry : expand_keys.origins) {
             const CKeyID &key_id = entry.first;
             CKey key;
             if (!expand_keys.GetKey(key_id, key)) {
                 have_all_privkeys = false;
                 break;
             }
         }
 
         // If private keys are enabled, check some things.
         if (!pwallet->IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS)) {
             if (keys.keys.empty()) {
                 throw JSONRPCError(
                     RPC_WALLET_ERROR,
                     "Cannot import descriptor without private keys to a wallet "
                     "with private keys enabled");
             }
             if (!have_all_privkeys) {
                 warnings.push_back(
                     "Not all private keys provided. Some wallet functionality "
                     "may return unexpected errors");
             }
         }
 
         WalletDescriptor w_desc(std::move(parsed_desc), timestamp, range_start,
                                 range_end, next_index);
 
         // Check if the wallet already contains the descriptor
         auto existing_spk_manager =
             pwallet->GetDescriptorScriptPubKeyMan(w_desc);
         if (existing_spk_manager) {
             LOCK(existing_spk_manager->cs_desc_man);
             if (range_start >
                 existing_spk_manager->GetWalletDescriptor().range_start) {
                 throw JSONRPCError(
                     RPC_INVALID_PARAMS,
                     strprintf(
                         "range_start can only decrease; current range = "
                         "[%d,%d]",
                         existing_spk_manager->GetWalletDescriptor().range_start,
                         existing_spk_manager->GetWalletDescriptor().range_end));
             }
         }
 
         // Add descriptor to the wallet
         auto spk_manager = pwallet->AddWalletDescriptor(w_desc, keys, label);
         if (spk_manager == nullptr) {
             throw JSONRPCError(
                 RPC_WALLET_ERROR,
                 strprintf("Could not add descriptor '%s'", descriptor));
         }
 
         // Set descriptor as active if necessary
         if (active) {
             if (!w_desc.descriptor->GetOutputType()) {
                 warnings.push_back(
                     "Unknown output type, cannot set descriptor to active.");
             } else {
                 pwallet->SetActiveScriptPubKeyMan(
                     spk_manager->GetID(), *w_desc.descriptor->GetOutputType(),
                     internal);
             }
         }
 
         result.pushKV("success", UniValue(true));
     } catch (const UniValue &e) {
         result.pushKV("success", UniValue(false));
         result.pushKV("error", e);
     } catch (...) {
         result.pushKV("success", UniValue(false));
 
         result.pushKV("error",
                       JSONRPCError(RPC_MISC_ERROR, "Missing required fields"));
     }
     if (warnings.size()) {
         result.pushKV("warnings", warnings);
     }
     return result;
 }
 
 UniValue importdescriptors(const Config &config,
                            const JSONRPCRequest &main_request) {
     // Acquire the wallet
     std::shared_ptr<CWallet> const wallet =
         GetWalletForJSONRPCRequest(main_request);
     CWallet *const pwallet = wallet.get();
     if (!EnsureWalletIsAvailable(pwallet, main_request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "importdescriptors",
         "\nImport descriptors. This will trigger a rescan of the blockchain "
         "based on the earliest timestamp of all descriptors being imported. "
         "Requires a new wallet backup.\n"
         "\nNote: This call can take over an hour to complete if using an early "
         "timestamp; during that time, other rpc calls\n"
         "may report that the imported keys, addresses or scripts exist but "
         "related transactions are still missing.\n",
         {
             {"requests",
              RPCArg::Type::ARR,
              RPCArg::Optional::NO,
              "Data to be imported",
              {
                  {
                      "",
                      RPCArg::Type::OBJ,
                      RPCArg::Optional::OMITTED,
                      "",
                      {
                          {"desc", RPCArg::Type::STR, RPCArg::Optional::NO,
                           "Descriptor to import."},
                          {"active", RPCArg::Type::BOOL, /* default */ "false",
                           "Set this descriptor to be the active descriptor for "
                           "the corresponding output type/externality"},
                          {"range", RPCArg::Type::RANGE,
                           RPCArg::Optional::OMITTED,
                           "If a ranged descriptor is used, this specifies the "
                           "end or the range (in the form [begin,end]) to "
                           "import"},
                          {"next_index", RPCArg::Type::NUM,
                           RPCArg::Optional::OMITTED,
                           "If a ranged descriptor is set to active, this "
                           "specifies the next index to generate addresses "
                           "from"},
                          {"timestamp",
                           RPCArg::Type::NUM,
                           RPCArg::Optional::NO,
                           "Time from which to start rescanning the blockchain "
                           "for this descriptor, in " +
                               UNIX_EPOCH_TIME +
                               "\n"
                               "                                                "
                               "              Use the string \"now\" to "
                               "substitute the current synced blockchain time.\n"
                               "                                                "
                               "              \"now\" can be specified to "
                               "bypass scanning, for outputs which are known to "
                               "never have been used, and\n"
                               "                                                "
                               "              0 can be specified to scan the "
                               "entire blockchain. Blocks up to 2 hours before "
                               "the earliest timestamp\n"
                               "                                                "
                               "              of all descriptors being imported "
                               "will be scanned.",
                           /* oneline_description */ "",
                           {"timestamp | \"now\"", "integer / string"}},
                          {"internal", RPCArg::Type::BOOL, /* default */ "false",
                           "Whether matching outputs should be treated as not "
                           "incoming payments (e.g. change)"},
                          {"label", RPCArg::Type::STR, /* default */ "''",
                           "Label to assign to the address, only allowed with "
                           "internal=false"},
                      },
                  },
              },
              "\"requests\""},
         },
         RPCResult{RPCResult::Type::ARR,
                   "",
                   "Response is an array with the same size as the input that "
                   "has the execution result",
                   {
                       {RPCResult::Type::OBJ,
                        "",
                        "",
                        {
                            {RPCResult::Type::BOOL, "success", ""},
                            {RPCResult::Type::ARR,
                             "warnings",
                             /* optional */ true,
                             "",
                             {
                                 {RPCResult::Type::STR, "", ""},
                             }},
                            {RPCResult::Type::OBJ,
                             "error",
                             /* optional */ true,
                             "",
                             {
                                 {RPCResult::Type::ELISION, "", "JSONRPC error"},
                             }},
                        }},
                   }},
         RPCExamples{
             HelpExampleCli("importdescriptors",
                            "'[{ \"desc\": \"<my descriptor>\", "
                            "\"timestamp\":1455191478, \"internal\": true }, "
                            "{ \"desc\": \"<my desccriptor 2>\", \"label\": "
                            "\"example 2\", \"timestamp\": 1455191480 }]'") +
             HelpExampleCli(
                 "importdescriptors",
                 "'[{ \"desc\": \"<my descriptor>\", \"timestamp\":1455191478, "
                 "\"active\": true, \"range\": [0,100], \"label\": \"<my "
                 "cashaddr wallet>\" }]'")},
     }
         .Check(main_request);
 
     //  Make sure wallet is a descriptor wallet
     if (!pwallet->IsWalletFlagSet(WALLET_FLAG_DESCRIPTORS)) {
         throw JSONRPCError(
             RPC_WALLET_ERROR,
             "importdescriptors is not available for non-descriptor wallets");
     }
 
     RPCTypeCheck(main_request.params, {UniValue::VARR, UniValue::VOBJ});
 
     WalletRescanReserver reserver(*pwallet);
     if (!reserver.reserve()) {
         throw JSONRPCError(
             RPC_WALLET_ERROR,
             "Wallet is currently rescanning. Abort existing rescan or wait.");
     }
 
     const UniValue &requests = main_request.params[0];
     const int64_t minimum_timestamp = 1;
     int64_t now = 0;
     int64_t lowest_timestamp = 0;
     bool rescan = false;
     UniValue response(UniValue::VARR);
     {
         LOCK(pwallet->cs_wallet);
         EnsureWalletIsUnlocked(pwallet);
 
         CHECK_NONFATAL(pwallet->chain().findBlock(
             pwallet->GetLastBlockHash(),
             FoundBlock().time(lowest_timestamp).mtpTime(now)));
 
         // Get all timestamps and extract the lowest timestamp
         for (const UniValue &request : requests.getValues()) {
             // This throws an error if "timestamp" doesn't exist
             const int64_t timestamp =
                 std::max(GetImportTimestamp(request, now), minimum_timestamp);
             const UniValue result =
                 ProcessDescriptorImport(pwallet, request, timestamp);
             response.push_back(result);
 
             if (lowest_timestamp > timestamp) {
                 lowest_timestamp = timestamp;
             }
 
             // If we know the chain tip, and at least one request was successful
             // then allow rescan
             if (!rescan && result["success"].get_bool()) {
                 rescan = true;
             }
         }
         pwallet->ConnectScriptPubKeyManNotifiers();
     }
 
     // Rescan the blockchain using the lowest timestamp
     if (rescan) {
         int64_t scanned_time = pwallet->RescanFromTime(
             lowest_timestamp, reserver, true /* update */);
         {
             LOCK(pwallet->cs_wallet);
             pwallet->ReacceptWalletTransactions();
         }
 
         if (pwallet->IsAbortingRescan()) {
             throw JSONRPCError(RPC_MISC_ERROR, "Rescan aborted by user.");
         }
 
         if (scanned_time > lowest_timestamp) {
             std::vector<UniValue> results = response.getValues();
             response.clear();
             response.setArray();
 
             // Compose the response
             for (unsigned int i = 0; i < requests.size(); ++i) {
                 const UniValue &request = requests.getValues().at(i);
 
                 // If the descriptor timestamp is within the successfully
                 // scanned range, or if the import result already has an error
                 // set, let the result stand unmodified. Otherwise replace the
                 // result with an error message.
                 if (scanned_time <= GetImportTimestamp(request, now) ||
                     results.at(i).exists("error")) {
                     response.push_back(results.at(i));
                 } else {
                     UniValue result = UniValue(UniValue::VOBJ);
                     result.pushKV("success", UniValue(false));
                     result.pushKV(
                         "error",
                         JSONRPCError(
                             RPC_MISC_ERROR,
                             strprintf(
                                 "Rescan failed for descriptor with timestamp "
                                 "%d. There was an error reading a block from "
                                 "time %d, which is after or within %d seconds "
                                 "of key creation, and could contain "
                                 "transactions pertaining to the desc. As a "
                                 "result, transactions and coins using this "
                                 "desc may not appear in the wallet. This error "
                                 "could be caused by pruning or data corruption "
                                 "(see bitcoind log for details) and could be "
                                 "dealt with by downloading and rescanning the "
                                 "relevant blocks (see -reindex and -rescan "
                                 "options).",
                                 GetImportTimestamp(request, now),
                                 scanned_time - TIMESTAMP_WINDOW - 1,
                                 TIMESTAMP_WINDOW)));
                     response.push_back(std::move(result));
                 }
             }
         }
     }
 
     return response;
 }
 
-void RegisterDumpRPCCommands(
-    interfaces::Chain &chain,
-    std::vector<std::unique_ptr<interfaces::Handler>> &handlers) {
+Span<const CRPCCommand> GetWalletDumpRPCCommands() {
     // clang-format off
     static const CRPCCommand commands[] = {
         //  category            name                        actor (function)          argNames
         //  ------------------- ------------------------    ----------------------    ----------
         { "wallet",             "abortrescan",              abortrescan,              {} },
         { "wallet",             "dumpprivkey",              dumpprivkey,              {"address"}  },
         { "wallet",             "dumpwallet",               dumpwallet,               {"filename"} },
         { "wallet",             "importdescriptors",        importdescriptors,        {"requests"} },
         { "wallet",             "importmulti",              importmulti,              {"requests","options"} },
         { "wallet",             "importprivkey",            importprivkey,            {"privkey","label","rescan"} },
         { "wallet",             "importwallet",             importwallet,             {"filename"} },
         { "wallet",             "importaddress",            importaddress,            {"address","label","rescan","p2sh"} },
         { "wallet",             "importprunedfunds",        importprunedfunds,        {"rawtransaction","txoutproof"} },
         { "wallet",             "importpubkey",             importpubkey,             {"pubkey","label","rescan"} },
         { "wallet",             "removeprunedfunds",        removeprunedfunds,        {"txid"} },
     };
     // clang-format on
 
-    for (unsigned int vcidx = 0; vcidx < ARRAYLEN(commands); vcidx++) {
-        handlers.emplace_back(chain.handleRpc(commands[vcidx]));
-    }
+    return MakeSpan(commands);
 }
diff --git a/src/wallet/rpcdump.h b/src/wallet/rpcdump.h
index 1d5ace050..8d1c958a8 100644
--- a/src/wallet/rpcdump.h
+++ b/src/wallet/rpcdump.h
@@ -1,30 +1,24 @@
 // Copyright (c) 2017 The Bitcoin developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 #ifndef BITCOIN_WALLET_RPCDUMP_H
 #define BITCOIN_WALLET_RPCDUMP_H
 
+#include <span.h>
 #include <univalue.h>
 
 #include <memory>
 #include <vector>
 
 class Config;
-class CRPCTable;
+class CRPCCommand;
 class JSONRPCRequest;
 
-namespace interfaces {
-class Chain;
-class Handler;
-} // namespace interfaces
-
-void RegisterDumpRPCCommands(
-    interfaces::Chain &chain,
-    std::vector<std::unique_ptr<interfaces::Handler>> &handlers);
+Span<const CRPCCommand> GetWalletDumpRPCCommands();
 
 UniValue importmulti(const Config &config, const JSONRPCRequest &request);
 UniValue dumpwallet(const Config &config, const JSONRPCRequest &request);
 UniValue importwallet(const Config &config, const JSONRPCRequest &request);
 
 #endif // BITCOIN_WALLET_RPCDUMP_H
diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp
index 402d5d823..a01216479 100644
--- a/src/wallet/rpcwallet.cpp
+++ b/src/wallet/rpcwallet.cpp
@@ -1,5058 +1,5063 @@
 // Copyright (c) 2010 Satoshi Nakamoto
 // Copyright (c) 2009-2019 The Bitcoin Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 #include <amount.h>
 #include <chainparams.h> // for GetConsensus.
 #include <coins.h>
 #include <config.h>
 #include <consensus/validation.h>
 #include <core_io.h>
 #include <interfaces/chain.h>
 #include <key_io.h>
 #include <network.h>
 #include <node/context.h>
 #include <outputtype.h>
 #include <policy/fees.h>
 #include <rpc/rawtransaction_util.h>
 #include <rpc/server.h>
 #include <rpc/util.h>
 #include <script/descriptor.h>
 #include <util/bip32.h>
 #include <util/error.h>
 #include <util/message.h> // For MessageSign()
 #include <util/moneystr.h>
+#include <util/ref.h>
 #include <util/string.h>
 #include <util/system.h>
 #include <util/translation.h>
 #include <util/url.h>
 #include <util/vector.h>
 #include <wallet/coincontrol.h>
+#include <wallet/context.h>
 #include <wallet/rpcwallet.h>
 #include <wallet/wallet.h>
 #include <wallet/walletdb.h>
 #include <wallet/walletutil.h>
 
 #include <univalue.h>
 
 #include <event2/http.h>
 
 using interfaces::FoundBlock;
 
 static const std::string WALLET_ENDPOINT_BASE = "/wallet/";
 
 static inline bool GetAvoidReuseFlag(const CWallet *const pwallet,
                                      const UniValue &param) {
     bool can_avoid_reuse = pwallet->IsWalletFlagSet(WALLET_FLAG_AVOID_REUSE);
     bool avoid_reuse = param.isNull() ? can_avoid_reuse : param.get_bool();
 
     if (avoid_reuse && !can_avoid_reuse) {
         throw JSONRPCError(
             RPC_WALLET_ERROR,
             "wallet does not have the \"avoid reuse\" feature enabled");
     }
 
     return avoid_reuse;
 }
 
 /**
  * Used by RPC commands that have an include_watchonly parameter. We default to
  * true for watchonly wallets if include_watchonly isn't explicitly set.
  */
 static bool ParseIncludeWatchonly(const UniValue &include_watchonly,
                                   const CWallet &pwallet) {
     if (include_watchonly.isNull()) {
         // if include_watchonly isn't explicitly set, then check if we have a
         // watchonly wallet
         return pwallet.IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS);
     }
 
     // otherwise return whatever include_watchonly was set to
     return include_watchonly.get_bool();
 }
 
 /**
  * Checks if a CKey is in the given CWallet compressed or otherwise
  */
 bool HaveKey(const SigningProvider &wallet, const CKey &key) {
     CKey key2;
     key2.Set(key.begin(), key.end(), !key.IsCompressed());
     return wallet.HaveKey(key.GetPubKey().GetID()) ||
            wallet.HaveKey(key2.GetPubKey().GetID());
 }
 
 bool GetWalletNameFromJSONRPCRequest(const JSONRPCRequest &request,
                                      std::string &wallet_name) {
     if (request.URI.substr(0, WALLET_ENDPOINT_BASE.size()) ==
         WALLET_ENDPOINT_BASE) {
         // wallet endpoint was used
         wallet_name =
             urlDecode(request.URI.substr(WALLET_ENDPOINT_BASE.size()));
         return true;
     }
     return false;
 }
 
 std::shared_ptr<CWallet>
 GetWalletForJSONRPCRequest(const JSONRPCRequest &request) {
     std::string wallet_name;
     if (GetWalletNameFromJSONRPCRequest(request, wallet_name)) {
         std::shared_ptr<CWallet> pwallet = GetWallet(wallet_name);
         if (!pwallet) {
             throw JSONRPCError(
                 RPC_WALLET_NOT_FOUND,
                 "Requested wallet does not exist or is not loaded");
         }
         return pwallet;
     }
 
     std::vector<std::shared_ptr<CWallet>> wallets = GetWallets();
     return wallets.size() == 1 || (request.fHelp && wallets.size() > 0)
                ? wallets[0]
                : nullptr;
 }
 
 std::string HelpRequiringPassphrase(const CWallet *pwallet) {
     return pwallet && pwallet->IsCrypted()
                ? "\nRequires wallet passphrase to be set with walletpassphrase "
                  "call."
                : "";
 }
 
 bool EnsureWalletIsAvailable(const CWallet *pwallet, bool avoidException) {
     if (pwallet) {
         return true;
     }
     if (avoidException) {
         return false;
     }
     if (!HasWallets()) {
         throw JSONRPCError(RPC_METHOD_NOT_FOUND,
                            "Method not found (wallet method is disabled "
                            "because no wallet is loaded)");
     }
 
     throw JSONRPCError(RPC_WALLET_NOT_SPECIFIED,
                        "Wallet file not specified (must request wallet RPC "
                        "through /wallet/<filename> uri-path).");
 }
 
 void EnsureWalletIsUnlocked(const CWallet *pwallet) {
     if (pwallet->IsLocked()) {
         throw JSONRPCError(RPC_WALLET_UNLOCK_NEEDED,
                            "Error: Please enter the wallet passphrase with "
                            "walletpassphrase first.");
     }
 }
 
+WalletContext &EnsureWalletContext(const util::Ref &context) {
+    if (!context.Has<WalletContext>()) {
+        throw JSONRPCError(RPC_INTERNAL_ERROR, "Wallet context not found");
+    }
+    return context.Get<WalletContext>();
+}
+
 // also_create should only be set to true only when the RPC is expected to add
 // things to a blank wallet and make it no longer blank
 LegacyScriptPubKeyMan &EnsureLegacyScriptPubKeyMan(CWallet &wallet,
                                                    bool also_create) {
     LegacyScriptPubKeyMan *spk_man = wallet.GetLegacyScriptPubKeyMan();
     if (!spk_man && also_create) {
         spk_man = wallet.GetOrCreateLegacyScriptPubKeyMan();
     }
     if (!spk_man) {
         throw JSONRPCError(RPC_WALLET_ERROR,
                            "This type of wallet does not support this command");
     }
     return *spk_man;
 }
 
 static void WalletTxToJSON(interfaces::Chain &chain, const CWalletTx &wtx,
                            UniValue &entry) {
     int confirms = wtx.GetDepthInMainChain();
     entry.pushKV("confirmations", confirms);
     if (wtx.IsCoinBase()) {
         entry.pushKV("generated", true);
     }
     if (confirms > 0) {
         entry.pushKV("blockhash", wtx.m_confirm.hashBlock.GetHex());
         entry.pushKV("blockheight", wtx.m_confirm.block_height);
         entry.pushKV("blockindex", wtx.m_confirm.nIndex);
         int64_t block_time;
         CHECK_NONFATAL(chain.findBlock(wtx.m_confirm.hashBlock,
                                        FoundBlock().time(block_time)));
         entry.pushKV("blocktime", block_time);
     } else {
         entry.pushKV("trusted", wtx.IsTrusted());
     }
     uint256 hash = wtx.GetId();
     entry.pushKV("txid", hash.GetHex());
     UniValue conflicts(UniValue::VARR);
     for (const uint256 &conflict : wtx.GetConflicts()) {
         conflicts.push_back(conflict.GetHex());
     }
     entry.pushKV("walletconflicts", conflicts);
     entry.pushKV("time", wtx.GetTxTime());
     entry.pushKV("timereceived", (int64_t)wtx.nTimeReceived);
 
     for (const std::pair<const std::string, std::string> &item : wtx.mapValue) {
         entry.pushKV(item.first, item.second);
     }
 }
 
 static std::string LabelFromValue(const UniValue &value) {
     std::string label = value.get_str();
     if (label == "*") {
         throw JSONRPCError(RPC_WALLET_INVALID_LABEL_NAME, "Invalid label name");
     }
     return label;
 }
 
 static UniValue getnewaddress(const Config &config,
                               const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "getnewaddress",
         "Returns a new Bitcoin address for receiving payments.\n"
         "If 'label' is specified, it is added to the address book \n"
         "so payments received with the address will be associated with "
         "'label'.\n",
         {
             {"label", RPCArg::Type::STR, /* default */ "null",
              "The label name for the address to be linked to. If not provided, "
              "the default label \"\" is used. It can also be set to the empty "
              "string \"\" to represent the default label. The label does not "
              "need to exist, it will be created if there is no label by the "
              "given name."},
             {"address_type", RPCArg::Type::STR,
              /* default */ "set by -addresstype",
              "The address type to use. Options are \"legacy\"."},
         },
         RPCResult{RPCResult::Type::STR, "address", "The new bitcoin address"},
         RPCExamples{HelpExampleCli("getnewaddress", "") +
                     HelpExampleRpc("getnewaddress", "")},
     }
         .Check(request);
 
     LOCK(pwallet->cs_wallet);
 
     if (!pwallet->CanGetAddresses()) {
         throw JSONRPCError(RPC_WALLET_ERROR,
                            "Error: This wallet has no available keys");
     }
 
     // Parse the label first so we don't generate a key if there's an error
     std::string label;
     if (!request.params[0].isNull()) {
         label = LabelFromValue(request.params[0]);
     }
 
     OutputType output_type = pwallet->m_default_address_type;
     if (!request.params[1].isNull()) {
         if (!ParseOutputType(request.params[1].get_str(), output_type)) {
             throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY,
                                strprintf("Unknown address type '%s'",
                                          request.params[1].get_str()));
         }
     }
 
     CTxDestination dest;
     std::string error;
     if (!pwallet->GetNewDestination(output_type, label, dest, error)) {
         throw JSONRPCError(RPC_WALLET_KEYPOOL_RAN_OUT, error);
     }
 
     return EncodeDestination(dest, config);
 }
 
 static UniValue getrawchangeaddress(const Config &config,
                                     const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "getrawchangeaddress",
         "Returns a new Bitcoin address, for receiving change.\n"
         "This is for use with raw transactions, NOT normal use.\n",
         {},
         RPCResult{RPCResult::Type::STR, "address", "The address"},
         RPCExamples{HelpExampleCli("getrawchangeaddress", "") +
                     HelpExampleRpc("getrawchangeaddress", "")},
     }
         .Check(request);
 
     LOCK(pwallet->cs_wallet);
 
     if (!pwallet->CanGetAddresses(true)) {
         throw JSONRPCError(RPC_WALLET_ERROR,
                            "Error: This wallet has no available keys");
     }
 
     OutputType output_type =
         pwallet->m_default_change_type != OutputType::CHANGE_AUTO
             ? pwallet->m_default_change_type
             : pwallet->m_default_address_type;
     if (!request.params[0].isNull()) {
         if (!ParseOutputType(request.params[0].get_str(), output_type)) {
             throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY,
                                strprintf("Unknown address type '%s'",
                                          request.params[0].get_str()));
         }
     }
 
     CTxDestination dest;
     std::string error;
     if (!pwallet->GetNewChangeDestination(output_type, dest, error)) {
         throw JSONRPCError(RPC_WALLET_KEYPOOL_RAN_OUT, error);
     }
     return EncodeDestination(dest, config);
 }
 
 static UniValue setlabel(const Config &config, const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "setlabel",
         "Sets the label associated with the given address.\n",
         {
             {"address", RPCArg::Type::STR, RPCArg::Optional::NO,
              "The bitcoin address to be associated with a label."},
             {"label", RPCArg::Type::STR, RPCArg::Optional::NO,
              "The label to assign to the address."},
         },
         RPCResults{},
         RPCExamples{
             HelpExampleCli("setlabel",
                            "\"1D1ZrZNe3JUo7ZycKEYQQiQAWd9y54F4XX\" \"tabby\"") +
             HelpExampleRpc(
                 "setlabel",
                 "\"1D1ZrZNe3JUo7ZycKEYQQiQAWd9y54F4XX\", \"tabby\"")},
     }
         .Check(request);
 
     LOCK(pwallet->cs_wallet);
 
     CTxDestination dest =
         DecodeDestination(request.params[0].get_str(), wallet->chainParams);
     if (!IsValidDestination(dest)) {
         throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY,
                            "Invalid Bitcoin address");
     }
 
     std::string label = LabelFromValue(request.params[1]);
 
     if (pwallet->IsMine(dest)) {
         pwallet->SetAddressBook(dest, label, "receive");
     } else {
         pwallet->SetAddressBook(dest, label, "send");
     }
 
     return NullUniValue;
 }
 
 static CTransactionRef SendMoney(CWallet *const pwallet,
                                  const CTxDestination &address, Amount nValue,
                                  bool fSubtractFeeFromAmount,
                                  const CCoinControl &coin_control,
                                  mapValue_t mapValue) {
     Amount curBalance =
         pwallet->GetBalance(0, coin_control.m_avoid_address_reuse)
             .m_mine_trusted;
 
     // Check amount
     if (nValue <= Amount::zero()) {
         throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid amount");
     }
 
     if (nValue > curBalance) {
         throw JSONRPCError(RPC_WALLET_INSUFFICIENT_FUNDS, "Insufficient funds");
     }
 
     // Parse Bitcoin address
     CScript scriptPubKey = GetScriptForDestination(address);
 
     // Create and send the transaction
     Amount nFeeRequired;
     bilingual_str error;
     std::vector<CRecipient> vecSend;
     int nChangePosRet = -1;
     CRecipient recipient = {scriptPubKey, nValue, fSubtractFeeFromAmount};
     vecSend.push_back(recipient);
 
     CTransactionRef tx;
     if (!pwallet->CreateTransaction(vecSend, tx, nFeeRequired, nChangePosRet,
                                     error, coin_control)) {
         if (!fSubtractFeeFromAmount && nValue + nFeeRequired > curBalance) {
             error = strprintf(Untranslated("Error: This transaction requires a "
                                            "transaction fee of at least %s"),
                               FormatMoney(nFeeRequired));
         }
         throw JSONRPCError(RPC_WALLET_ERROR, error.original);
     }
     pwallet->CommitTransaction(tx, std::move(mapValue), {} /* orderForm */);
     return tx;
 }
 
 static UniValue sendtoaddress(const Config &config,
                               const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "sendtoaddress",
         "Send an amount to a given address.\n" +
             HelpRequiringPassphrase(pwallet) + "\n",
         {
             {"address", RPCArg::Type::STR, RPCArg::Optional::NO,
              "The bitcoin address to send to."},
             {"amount", RPCArg::Type::AMOUNT, RPCArg::Optional::NO,
              "The amount in " + CURRENCY_UNIT + " to send. eg 0.1"},
             {"comment", RPCArg::Type::STR, RPCArg::Optional::OMITTED_NAMED_ARG,
              "A comment used to store what the transaction is for.\n"
              "                             This is not part of the "
              "transaction, just kept in your wallet."},
             {"comment_to", RPCArg::Type::STR,
              RPCArg::Optional::OMITTED_NAMED_ARG,
              "A comment to store the name of the person or organization\n"
              "                             to which you're sending the "
              "transaction. This is not part of the \n"
              "                             transaction, just kept in "
              "your wallet."},
             {"subtractfeefromamount", RPCArg::Type::BOOL,
              /* default */ "false",
              "The fee will be deducted from the amount being sent.\n"
              "                             The recipient will receive "
              "less bitcoins than you enter in the amount field."},
             {"avoid_reuse", RPCArg::Type::BOOL,
              /* default */ "true",
              "(only available if avoid_reuse wallet flag is set) Avoid "
              "spending from dirty addresses; addresses are considered\n"
              "                             dirty if they have previously "
              "been used in a transaction."},
         },
         RPCResult{RPCResult::Type::STR_HEX, "txid", "The transaction id."},
         RPCExamples{
             HelpExampleCli("sendtoaddress",
                            "\"1M72Sfpbz1BPpXFHz9m3CdqATR44Jvaydd\" 0.1") +
             HelpExampleCli("sendtoaddress", "\"1M72Sfpbz1BPpXFHz9m3CdqATR44Jvay"
                                             "dd\" 0.1 \"donation\" \"seans "
                                             "outpost\"") +
             HelpExampleCli("sendtoaddress", "\"1M72Sfpbz1BPpXFHz9m3CdqATR44"
                                             "Jvaydd\" 0.1 \"\" \"\" true") +
             HelpExampleRpc("sendtoaddress", "\"1M72Sfpbz1BPpXFHz9m3CdqATR44Jvay"
                                             "dd\", 0.1, \"donation\", \"seans "
                                             "outpost\"")},
     }
         .Check(request);
 
     // Make sure the results are valid at least up to the most recent block
     // the user could have gotten from another RPC command prior to now
     pwallet->BlockUntilSyncedToCurrentChain();
 
     LOCK(pwallet->cs_wallet);
 
     CTxDestination dest =
         DecodeDestination(request.params[0].get_str(), wallet->chainParams);
     if (!IsValidDestination(dest)) {
         throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid address");
     }
 
     // Amount
     Amount nAmount = AmountFromValue(request.params[1]);
     if (nAmount <= Amount::zero()) {
         throw JSONRPCError(RPC_TYPE_ERROR, "Invalid amount for send");
     }
 
     // Wallet comments
     mapValue_t mapValue;
     if (!request.params[2].isNull() && !request.params[2].get_str().empty()) {
         mapValue["comment"] = request.params[2].get_str();
     }
     if (!request.params[3].isNull() && !request.params[3].get_str().empty()) {
         mapValue["to"] = request.params[3].get_str();
     }
 
     bool fSubtractFeeFromAmount = false;
     if (!request.params[4].isNull()) {
         fSubtractFeeFromAmount = request.params[4].get_bool();
     }
 
     CCoinControl coin_control;
     coin_control.m_avoid_address_reuse =
         GetAvoidReuseFlag(pwallet, request.params[5]);
     // We also enable partial spend avoidance if reuse avoidance is set.
     coin_control.m_avoid_partial_spends |= coin_control.m_avoid_address_reuse;
 
     EnsureWalletIsUnlocked(pwallet);
 
     CTransactionRef tx =
         SendMoney(pwallet, dest, nAmount, fSubtractFeeFromAmount, coin_control,
                   std::move(mapValue));
     return tx->GetId().GetHex();
 }
 
 static UniValue listaddressgroupings(const Config &config,
                                      const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     const CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "listaddressgroupings",
         "Lists groups of addresses which have had their common ownership\n"
         "made public by common use as inputs or as the resulting change\n"
         "in past transactions\n",
         {},
         RPCResult{RPCResult::Type::ARR,
                   "",
                   "",
                   {
                       {RPCResult::Type::ARR,
                        "",
                        "",
                        {
                            {RPCResult::Type::ARR,
                             "",
                             "",
                             {
                                 {RPCResult::Type::STR, "address",
                                  "The bitcoin address"},
                                 {RPCResult::Type::STR_AMOUNT, "amount",
                                  "The amount in " + CURRENCY_UNIT},
                                 {RPCResult::Type::STR, "label",
                                  /* optional */ true, "The label"},
                             }},
                        }},
                   }},
         RPCExamples{HelpExampleCli("listaddressgroupings", "") +
                     HelpExampleRpc("listaddressgroupings", "")},
     }
         .Check(request);
 
     // Make sure the results are valid at least up to the most recent block
     // the user could have gotten from another RPC command prior to now
     pwallet->BlockUntilSyncedToCurrentChain();
 
     LOCK(pwallet->cs_wallet);
 
     UniValue jsonGroupings(UniValue::VARR);
     std::map<CTxDestination, Amount> balances = pwallet->GetAddressBalances();
     for (const std::set<CTxDestination> &grouping :
          pwallet->GetAddressGroupings()) {
         UniValue jsonGrouping(UniValue::VARR);
         for (const CTxDestination &address : grouping) {
             UniValue addressInfo(UniValue::VARR);
             addressInfo.push_back(EncodeDestination(address, config));
             addressInfo.push_back(ValueFromAmount(balances[address]));
 
             const auto *address_book_entry =
                 pwallet->FindAddressBookEntry(address);
             if (address_book_entry) {
                 addressInfo.push_back(address_book_entry->GetLabel());
             }
             jsonGrouping.push_back(addressInfo);
         }
         jsonGroupings.push_back(jsonGrouping);
     }
 
     return jsonGroupings;
 }
 
 static UniValue signmessage(const Config &config,
                             const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     const CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "signmessage",
         "Sign a message with the private key of an address" +
             HelpRequiringPassphrase(pwallet) + "\n",
         {
             {"address", RPCArg::Type::STR, RPCArg::Optional::NO,
              "The bitcoin address to use for the private key."},
             {"message", RPCArg::Type::STR, RPCArg::Optional::NO,
              "The message to create a signature of."},
         },
         RPCResult{RPCResult::Type::STR, "signature",
                   "The signature of the message encoded in base 64"},
         RPCExamples{
             "\nUnlock the wallet for 30 seconds\n" +
             HelpExampleCli("walletpassphrase", "\"mypassphrase\" 30") +
             "\nCreate the signature\n" +
             HelpExampleCli(
                 "signmessage",
                 "\"1D1ZrZNe3JUo7ZycKEYQQiQAWd9y54F4XX\" \"my message\"") +
             "\nVerify the signature\n" +
             HelpExampleCli("verifymessage",
                            "\"1D1ZrZNe3JUo7ZycKEYQQiQAWd9y54F4XX\" "
                            "\"signature\" \"my message\"") +
             "\nAs a JSON-RPC call\n" +
             HelpExampleRpc(
                 "signmessage",
                 "\"1D1ZrZNe3JUo7ZycKEYQQiQAWd9y54F4XX\", \"my message\"")},
     }
         .Check(request);
 
     LOCK(pwallet->cs_wallet);
 
     EnsureWalletIsUnlocked(pwallet);
 
     std::string strAddress = request.params[0].get_str();
     std::string strMessage = request.params[1].get_str();
 
     CTxDestination dest = DecodeDestination(strAddress, wallet->chainParams);
     if (!IsValidDestination(dest)) {
         throw JSONRPCError(RPC_TYPE_ERROR, "Invalid address");
     }
 
     const PKHash *pkhash = boost::get<PKHash>(&dest);
     if (!pkhash) {
         throw JSONRPCError(RPC_TYPE_ERROR, "Address does not refer to key");
     }
 
     std::string signature;
     SigningResult err = pwallet->SignMessage(strMessage, *pkhash, signature);
     if (err == SigningResult::SIGNING_FAILED) {
         throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY,
                            SigningResultString(err));
     } else if (err != SigningResult::OK) {
         throw JSONRPCError(RPC_WALLET_ERROR, SigningResultString(err));
     }
 
     return signature;
 }
 
 static Amount GetReceived(const CWallet &wallet, const UniValue &params,
                           bool by_label)
     EXCLUSIVE_LOCKS_REQUIRED(wallet.cs_wallet) {
     std::set<CTxDestination> address_set;
 
     if (by_label) {
         // Get the set of addresses assigned to label
         std::string label = LabelFromValue(params[0]);
         address_set = wallet.GetLabelAddresses(label);
     } else {
         // Get the address
         CTxDestination dest =
             DecodeDestination(params[0].get_str(), wallet.chainParams);
         if (!IsValidDestination(dest)) {
             throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY,
                                "Invalid Bitcoin address");
         }
         CScript script_pub_key = GetScriptForDestination(dest);
         if (!wallet.IsMine(script_pub_key)) {
             throw JSONRPCError(RPC_WALLET_ERROR, "Address not found in wallet");
         }
         address_set.insert(dest);
     }
 
     // Minimum confirmations
     int min_depth = 1;
     if (!params[1].isNull()) {
         min_depth = params[1].get_int();
     }
 
     // Tally
     Amount amount = Amount::zero();
     for (const std::pair<const TxId, CWalletTx> &wtx_pair : wallet.mapWallet) {
         const CWalletTx &wtx = wtx_pair.second;
         TxValidationState txState;
         if (wtx.IsCoinBase() ||
             !wallet.chain().contextualCheckTransactionForCurrentBlock(
                 *wtx.tx, txState) ||
             wtx.GetDepthInMainChain() < min_depth) {
             continue;
         }
 
         for (const CTxOut &txout : wtx.tx->vout) {
             CTxDestination address;
             if (ExtractDestination(txout.scriptPubKey, address) &&
                 wallet.IsMine(address) && address_set.count(address)) {
                 amount += txout.nValue;
             }
         }
     }
 
     return amount;
 }
 
 static UniValue getreceivedbyaddress(const Config &config,
                                      const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     const CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "getreceivedbyaddress",
         "Returns the total amount received by the given address in "
         "transactions with at least minconf confirmations.\n",
         {
             {"address", RPCArg::Type::STR, RPCArg::Optional::NO,
              "The bitcoin address for transactions."},
             {"minconf", RPCArg::Type::NUM, /* default */ "1",
              "Only include transactions confirmed at least this many times."},
         },
         RPCResult{RPCResult::Type::STR_AMOUNT, "amount",
                   "The total amount in " + CURRENCY_UNIT +
                       " received at this address."},
         RPCExamples{
             "\nThe amount from transactions with at least 1 confirmation\n" +
             HelpExampleCli("getreceivedbyaddress",
                            "\"1D1ZrZNe3JUo7ZycKEYQQiQAWd9y54F4XX\"") +
             "\nThe amount including unconfirmed transactions, zero "
             "confirmations\n" +
             HelpExampleCli("getreceivedbyaddress",
                            "\"1D1ZrZNe3JUo7ZycKEYQQiQAWd9y54F4XX\" 0") +
             "\nThe amount with at least 6 confirmations\n" +
             HelpExampleCli("getreceivedbyaddress",
                            "\"1D1ZrZNe3JUo7ZycKEYQQiQAWd9y54F4XX\" 6") +
             "\nAs a JSON-RPC call\n" +
             HelpExampleRpc("getreceivedbyaddress",
                            "\"1D1ZrZNe3JUo7ZycKEYQQiQAWd9y54F4XX\", 6")},
     }
         .Check(request);
 
     // Make sure the results are valid at least up to the most recent block
     // the user could have gotten from another RPC command prior to now
     pwallet->BlockUntilSyncedToCurrentChain();
 
     LOCK(pwallet->cs_wallet);
 
     return ValueFromAmount(GetReceived(*pwallet, request.params,
                                        /* by_label */ false));
 }
 
 static UniValue getreceivedbylabel(const Config &config,
                                    const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "getreceivedbylabel",
         "Returns the total amount received by addresses with <label> in "
         "transactions with at least [minconf] confirmations.\n",
         {
             {"label", RPCArg::Type::STR, RPCArg::Optional::NO,
              "The selected label, may be the default label using \"\"."},
             {"minconf", RPCArg::Type::NUM, /* default */ "1",
              "Only include transactions confirmed at least this many times."},
         },
         RPCResult{RPCResult::Type::STR_AMOUNT, "amount",
                   "The total amount in " + CURRENCY_UNIT +
                       " received for this label."},
         RPCExamples{"\nAmount received by the default label with at least 1 "
                     "confirmation\n" +
                     HelpExampleCli("getreceivedbylabel", "\"\"") +
                     "\nAmount received at the tabby label including "
                     "unconfirmed amounts with zero confirmations\n" +
                     HelpExampleCli("getreceivedbylabel", "\"tabby\" 0") +
                     "\nThe amount with at least 6 confirmations\n" +
                     HelpExampleCli("getreceivedbylabel", "\"tabby\" 6") +
                     "\nAs a JSON-RPC call\n" +
                     HelpExampleRpc("getreceivedbylabel", "\"tabby\", 6")},
     }
         .Check(request);
 
     // Make sure the results are valid at least up to the most recent block
     // the user could have gotten from another RPC command prior to now
     pwallet->BlockUntilSyncedToCurrentChain();
 
     LOCK(pwallet->cs_wallet);
 
     return ValueFromAmount(GetReceived(*pwallet, request.params,
                                        /* by_label */ true));
 }
 
 static UniValue getbalance(const Config &config,
                            const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     const CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "getbalance",
         "Returns the total available balance.\n"
         "The available balance is what the wallet considers currently "
         "spendable, and is\n"
         "thus affected by options which limit spendability such as "
         "-spendzeroconfchange.\n",
         {
             {"dummy", RPCArg::Type::STR, RPCArg::Optional::OMITTED_NAMED_ARG,
              "Remains for backward compatibility. Must be excluded or set to "
              "\"*\"."},
             {"minconf", RPCArg::Type::NUM, /* default */ "0",
              "Only include transactions confirmed at least this many times."},
             {"include_watchonly", RPCArg::Type::BOOL,
              /* default */ "true for watch-only wallets, otherwise false",
              "Also include balance in watch-only addresses (see "
              "'importaddress')"},
             {"avoid_reuse", RPCArg::Type::BOOL,
              /* default */ "true",
              "(only available if avoid_reuse wallet flag is set) Do not "
              "include balance in dirty outputs; addresses are considered dirty "
              "if they have previously been used in a transaction."},
         },
         RPCResult{RPCResult::Type::STR_AMOUNT, "amount",
                   "The total amount in " + CURRENCY_UNIT +
                       " received for this wallet."},
         RPCExamples{
             "\nThe total amount in the wallet with 1 or more confirmations\n" +
             HelpExampleCli("getbalance", "") +
             "\nThe total amount in the wallet at least 6 blocks confirmed\n" +
             HelpExampleCli("getbalance", "\"*\" 6") + "\nAs a JSON-RPC call\n" +
             HelpExampleRpc("getbalance", "\"*\", 6")},
     }
         .Check(request);
 
     // Make sure the results are valid at least up to the most recent block
     // the user could have gotten from another RPC command prior to now
     pwallet->BlockUntilSyncedToCurrentChain();
 
     LOCK(pwallet->cs_wallet);
 
     const UniValue &dummy_value = request.params[0];
     if (!dummy_value.isNull() && dummy_value.get_str() != "*") {
         throw JSONRPCError(
             RPC_METHOD_DEPRECATED,
             "dummy first argument must be excluded or set to \"*\".");
     }
 
     int min_depth = 0;
     if (!request.params[1].isNull()) {
         min_depth = request.params[1].get_int();
     }
 
     bool include_watchonly = ParseIncludeWatchonly(request.params[2], *pwallet);
 
     bool avoid_reuse = GetAvoidReuseFlag(pwallet, request.params[3]);
 
     const auto bal = pwallet->GetBalance(min_depth, avoid_reuse);
 
     return ValueFromAmount(bal.m_mine_trusted + (include_watchonly
                                                      ? bal.m_watchonly_trusted
                                                      : Amount::zero()));
 }
 
 static UniValue getunconfirmedbalance(const Config &config,
                                       const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     const CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "getunconfirmedbalance",
         "DEPRECATED\nIdentical to getbalances().mine.untrusted_pending\n",
         {},
         RPCResults{},
         RPCExamples{""},
     }
         .Check(request);
 
     // Make sure the results are valid at least up to the most recent block
     // the user could have gotten from another RPC command prior to now
     pwallet->BlockUntilSyncedToCurrentChain();
 
     LOCK(pwallet->cs_wallet);
 
     return ValueFromAmount(pwallet->GetBalance().m_mine_untrusted_pending);
 }
 
 static UniValue sendmany(const Config &config, const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "sendmany",
         "Send multiple times. Amounts are double-precision "
         "floating point numbers." +
             HelpRequiringPassphrase(pwallet) + "\n",
         {
             {"dummy", RPCArg::Type::STR, RPCArg::Optional::NO,
              "Must be set to \"\" for backwards compatibility.", "\"\""},
             {
                 "amounts",
                 RPCArg::Type::OBJ,
                 RPCArg::Optional::NO,
                 "A json object with addresses and amounts",
                 {
                     {"address", RPCArg::Type::AMOUNT, RPCArg::Optional::NO,
                      "The bitcoin address is the key, the numeric amount (can "
                      "be string) in " +
                          CURRENCY_UNIT + " is the value"},
                 },
             },
             {"minconf", RPCArg::Type::NUM, /* default */ "1",
              "Only use the balance confirmed at least this many times."},
             {"comment", RPCArg::Type::STR, RPCArg::Optional::OMITTED_NAMED_ARG,
              "A comment"},
             {
                 "subtractfeefrom",
                 RPCArg::Type::ARR,
                 RPCArg::Optional::OMITTED_NAMED_ARG,
                 "A json array with addresses.\n"
                 "                           The fee will be equally deducted "
                 "from the amount of each selected address.\n"
                 "                           Those recipients will receive less "
                 "bitcoins than you enter in their corresponding amount field.\n"
                 "                           If no addresses are specified "
                 "here, the sender pays the fee.",
                 {
                     {"address", RPCArg::Type::STR, RPCArg::Optional::OMITTED,
                      "Subtract fee from this address"},
                 },
             },
         },
         RPCResult{RPCResult::Type::STR_HEX, "txid",
                   "The transaction id for the send. Only 1 transaction is "
                   "created regardless of the number of addresses."},
         RPCExamples{
             "\nSend two amounts to two different addresses:\n" +
             HelpExampleCli(
                 "sendmany",
                 "\"\" "
                 "\"{\\\"bchtest:qplljx455cznj2yrtdhj0jcm7syxlzqnaqt0ku5kjl\\\":"
                 "0.01,"
                 "\\\"bchtest:qzmnuh8t24yrxq4mvjakt84r7j3f9tunlvm2p7qef9\\\":0."
                 "02}\"") +
             "\nSend two amounts to two different addresses setting the "
             "confirmation and comment:\n" +
             HelpExampleCli(
                 "sendmany",
                 "\"\" "
                 "\"{\\\"bchtest:qplljx455cznj2yrtdhj0jcm7syxlzqnaqt0ku5kjl\\\":"
                 "0.01,"
                 "\\\"bchtest:qzmnuh8t24yrxq4mvjakt84r7j3f9tunlvm2p7qef9\\\":0."
                 "02}\" "
                 "6 \"testing\"") +
             "\nSend two amounts to two different addresses, subtract fee "
             "from amount:\n" +
             HelpExampleCli(
                 "sendmany",
                 "\"\" "
                 "\"{\\\"bchtest:qplljx455cznj2yrtdhj0jcm7syxlzqnaqt0ku5kjl\\\":"
                 "0.01,"
                 "\\\"bchtest:qzmnuh8t24yrxq4mvjakt84r7j3f9tunlvm2p7qef9\\\":0."
                 "02}\" 1 \"\" "
                 "\"[\\\"bchtest:qplljx455cznj2yrtdhj0jcm7syxlzqnaqt0ku5kjl\\\","
                 "\\\"bchtest:qzmnuh8t24yrxq4mvjakt84r7j3f9tunlvm2p7qef9\\\"]"
                 "\"") +
             "\nAs a JSON-RPC call\n" +
             HelpExampleRpc(
                 "sendmany",
                 "\"\", "
                 "{\"bchtest:qplljx455cznj2yrtdhj0jcm7syxlzqnaqt0ku5kjl\":0.01,"
                 "\"bchtest:qzmnuh8t24yrxq4mvjakt84r7j3f9tunlvm2p7qef9\":0.02}, "
                 "6, "
                 "\"testing\"")},
     }
         .Check(request);
 
     // Make sure the results are valid at least up to the most recent block
     // the user could have gotten from another RPC command prior to now
     pwallet->BlockUntilSyncedToCurrentChain();
 
     LOCK(pwallet->cs_wallet);
 
     if (!request.params[0].isNull() && !request.params[0].get_str().empty()) {
         throw JSONRPCError(RPC_INVALID_PARAMETER,
                            "Dummy value must be set to \"\"");
     }
     UniValue sendTo = request.params[1].get_obj();
 
     mapValue_t mapValue;
     if (!request.params[3].isNull() && !request.params[3].get_str().empty()) {
         mapValue["comment"] = request.params[3].get_str();
     }
 
     UniValue subtractFeeFromAmount(UniValue::VARR);
     if (!request.params[4].isNull()) {
         subtractFeeFromAmount = request.params[4].get_array();
     }
 
     std::set<CTxDestination> destinations;
     std::vector<CRecipient> vecSend;
 
     std::vector<std::string> keys = sendTo.getKeys();
     for (const std::string &name_ : keys) {
         CTxDestination dest = DecodeDestination(name_, wallet->chainParams);
         if (!IsValidDestination(dest)) {
             throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY,
                                std::string("Invalid Bitcoin address: ") +
                                    name_);
         }
 
         if (destinations.count(dest)) {
             throw JSONRPCError(
                 RPC_INVALID_PARAMETER,
                 std::string("Invalid parameter, duplicated address: ") + name_);
         }
         destinations.insert(dest);
 
         CScript scriptPubKey = GetScriptForDestination(dest);
         Amount nAmount = AmountFromValue(sendTo[name_]);
         if (nAmount <= Amount::zero()) {
             throw JSONRPCError(RPC_TYPE_ERROR, "Invalid amount for send");
         }
 
         bool fSubtractFeeFromAmount = false;
         for (size_t idx = 0; idx < subtractFeeFromAmount.size(); idx++) {
             const UniValue &addr = subtractFeeFromAmount[idx];
             if (addr.get_str() == name_) {
                 fSubtractFeeFromAmount = true;
             }
         }
 
         CRecipient recipient = {scriptPubKey, nAmount, fSubtractFeeFromAmount};
         vecSend.push_back(recipient);
     }
 
     EnsureWalletIsUnlocked(pwallet);
 
     // Shuffle recipient list
     std::shuffle(vecSend.begin(), vecSend.end(), FastRandomContext());
 
     // Send
     Amount nFeeRequired = Amount::zero();
     int nChangePosRet = -1;
     bilingual_str error;
     CTransactionRef tx;
     CCoinControl coinControl;
     bool fCreated = pwallet->CreateTransaction(
         vecSend, tx, nFeeRequired, nChangePosRet, error, coinControl);
     if (!fCreated) {
         throw JSONRPCError(RPC_WALLET_INSUFFICIENT_FUNDS, error.original);
     }
     pwallet->CommitTransaction(tx, std::move(mapValue), {} /* orderForm */);
     return tx->GetId().GetHex();
 }
 
 static UniValue addmultisigaddress(const Config &config,
                                    const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "addmultisigaddress",
         "Add an nrequired-to-sign multisignature address to the wallet. "
         "Requires a new wallet backup.\n"
         "Each key is a Bitcoin address or hex-encoded public key.\n"
         "This functionality is only intended for use with non-watchonly "
         "addresses.\n"
         "See `importaddress` for watchonly p2sh address support.\n"
         "If 'label' is specified (DEPRECATED), assign address to that label.\n",
         {
             {"nrequired", RPCArg::Type::NUM, RPCArg::Optional::NO,
              "The number of required signatures out of the n keys or "
              "addresses."},
             {
                 "keys",
                 RPCArg::Type::ARR,
                 RPCArg::Optional::NO,
                 "A json array of bitcoin addresses or hex-encoded public keys",
                 {
                     {"key", RPCArg::Type::STR, RPCArg::Optional::OMITTED,
                      "bitcoin address or hex-encoded public key"},
                 },
             },
             {"label", RPCArg::Type::STR, RPCArg::Optional::OMITTED_NAMED_ARG,
              "A label to assign the addresses to."},
         },
         RPCResult{RPCResult::Type::OBJ,
                   "",
                   "",
                   {
                       {RPCResult::Type::STR, "address",
                        "The value of the new multisig address"},
                       {RPCResult::Type::STR_HEX, "redeemScript",
                        "The string value of the hex-encoded redemption script"},
                       {RPCResult::Type::STR, "descriptor",
                        "The descriptor for this multisig"},
                   }},
         RPCExamples{
             "\nAdd a multisig address from 2 addresses\n" +
             HelpExampleCli("addmultisigaddress",
                            "2 "
                            "\"[\\\"16sSauSf5pF2UkUwvKGq4qjNRzBZYqgEL5\\\","
                            "\\\"171sgjn4YtPu27adkKGrdDwzRTxnRkBfKV\\\"]\"") +
             "\nAs a JSON-RPC call\n" +
             HelpExampleRpc("addmultisigaddress",
                            "2, "
                            "\"[\\\"16sSauSf5pF2UkUwvKGq4qjNRzBZYqgEL5\\\","
                            "\\\"171sgjn4YtPu27adkKGrdDwzRTxnRkBfKV\\\"]\"")},
     }
         .Check(request);
 
     LegacyScriptPubKeyMan &spk_man = EnsureLegacyScriptPubKeyMan(*pwallet);
 
     LOCK2(pwallet->cs_wallet, spk_man.cs_KeyStore);
 
     std::string label;
     if (!request.params[2].isNull()) {
         label = LabelFromValue(request.params[2]);
     }
 
     int required = request.params[0].get_int();
 
     // Get the public keys
     const UniValue &keys_or_addrs = request.params[1].get_array();
     std::vector<CPubKey> pubkeys;
     for (size_t i = 0; i < keys_or_addrs.size(); ++i) {
         if (IsHex(keys_or_addrs[i].get_str()) &&
             (keys_or_addrs[i].get_str().length() == 66 ||
              keys_or_addrs[i].get_str().length() == 130)) {
             pubkeys.push_back(HexToPubKey(keys_or_addrs[i].get_str()));
         } else {
             pubkeys.push_back(AddrToPubKey(wallet->chainParams, spk_man,
                                            keys_or_addrs[i].get_str()));
         }
     }
 
     OutputType output_type = pwallet->m_default_address_type;
 
     // Construct using pay-to-script-hash:
     CScript inner;
     CTxDestination dest = AddAndGetMultisigDestination(
         required, pubkeys, output_type, spk_man, inner);
     pwallet->SetAddressBook(dest, label, "send");
 
     // Make the descriptor
     std::unique_ptr<Descriptor> descriptor =
         InferDescriptor(GetScriptForDestination(dest), spk_man);
 
     UniValue result(UniValue::VOBJ);
     result.pushKV("address", EncodeDestination(dest, config));
     result.pushKV("redeemScript", HexStr(inner.begin(), inner.end()));
     result.pushKV("descriptor", descriptor->ToString());
     return result;
 }
 
 struct tallyitem {
     Amount nAmount{Amount::zero()};
     int nConf{std::numeric_limits<int>::max()};
     std::vector<uint256> txids;
     bool fIsWatchonly{false};
     tallyitem() {}
 };
 
 static UniValue ListReceived(const Config &config, const CWallet *const pwallet,
                              const UniValue &params, bool by_label)
     EXCLUSIVE_LOCKS_REQUIRED(pwallet->cs_wallet) {
     // Minimum confirmations
     int nMinDepth = 1;
     if (!params[0].isNull()) {
         nMinDepth = params[0].get_int();
     }
 
     // Whether to include empty labels
     bool fIncludeEmpty = false;
     if (!params[1].isNull()) {
         fIncludeEmpty = params[1].get_bool();
     }
 
     isminefilter filter = ISMINE_SPENDABLE;
     if (ParseIncludeWatchonly(params[2], *pwallet)) {
         filter |= ISMINE_WATCH_ONLY;
     }
 
     bool has_filtered_address = false;
     CTxDestination filtered_address = CNoDestination();
     if (!by_label && params.size() > 3) {
         if (!IsValidDestinationString(params[3].get_str(),
                                       pwallet->chainParams)) {
             throw JSONRPCError(RPC_WALLET_ERROR,
                                "address_filter parameter was invalid");
         }
         filtered_address =
             DecodeDestination(params[3].get_str(), pwallet->chainParams);
         has_filtered_address = true;
     }
 
     // Tally
     std::map<CTxDestination, tallyitem> mapTally;
     for (const std::pair<const TxId, CWalletTx> &pairWtx : pwallet->mapWallet) {
         const CWalletTx &wtx = pairWtx.second;
 
         TxValidationState state;
         if (wtx.IsCoinBase() ||
             !pwallet->chain().contextualCheckTransactionForCurrentBlock(
                 *wtx.tx, state)) {
             continue;
         }
 
         int nDepth = wtx.GetDepthInMainChain();
         if (nDepth < nMinDepth) {
             continue;
         }
 
         for (const CTxOut &txout : wtx.tx->vout) {
             CTxDestination address;
             if (!ExtractDestination(txout.scriptPubKey, address)) {
                 continue;
             }
 
             if (has_filtered_address && !(filtered_address == address)) {
                 continue;
             }
 
             isminefilter mine = pwallet->IsMine(address);
             if (!(mine & filter)) {
                 continue;
             }
 
             tallyitem &item = mapTally[address];
             item.nAmount += txout.nValue;
             item.nConf = std::min(item.nConf, nDepth);
             item.txids.push_back(wtx.GetId());
             if (mine & ISMINE_WATCH_ONLY) {
                 item.fIsWatchonly = true;
             }
         }
     }
 
     // Reply
     UniValue ret(UniValue::VARR);
     std::map<std::string, tallyitem> label_tally;
 
     // Create m_address_book iterator
     // If we aren't filtering, go from begin() to end()
     auto start = pwallet->m_address_book.begin();
     auto end = pwallet->m_address_book.end();
     // If we are filtering, find() the applicable entry
     if (has_filtered_address) {
         start = pwallet->m_address_book.find(filtered_address);
         if (start != end) {
             end = std::next(start);
         }
     }
 
     for (auto item_it = start; item_it != end; ++item_it) {
         if (item_it->second.IsChange()) {
             continue;
         }
         const CTxDestination &address = item_it->first;
         const std::string &label = item_it->second.GetLabel();
         std::map<CTxDestination, tallyitem>::iterator it =
             mapTally.find(address);
         if (it == mapTally.end() && !fIncludeEmpty) {
             continue;
         }
 
         Amount nAmount = Amount::zero();
         int nConf = std::numeric_limits<int>::max();
         bool fIsWatchonly = false;
         if (it != mapTally.end()) {
             nAmount = (*it).second.nAmount;
             nConf = (*it).second.nConf;
             fIsWatchonly = (*it).second.fIsWatchonly;
         }
 
         if (by_label) {
             tallyitem &_item = label_tally[label];
             _item.nAmount += nAmount;
             _item.nConf = std::min(_item.nConf, nConf);
             _item.fIsWatchonly = fIsWatchonly;
         } else {
             UniValue obj(UniValue::VOBJ);
             if (fIsWatchonly) {
                 obj.pushKV("involvesWatchonly", true);
             }
             obj.pushKV("address", EncodeDestination(address, config));
             obj.pushKV("amount", ValueFromAmount(nAmount));
             obj.pushKV("confirmations",
                        (nConf == std::numeric_limits<int>::max() ? 0 : nConf));
             obj.pushKV("label", label);
             UniValue transactions(UniValue::VARR);
             if (it != mapTally.end()) {
                 for (const uint256 &_item : (*it).second.txids) {
                     transactions.push_back(_item.GetHex());
                 }
             }
             obj.pushKV("txids", transactions);
             ret.push_back(obj);
         }
     }
 
     if (by_label) {
         for (const auto &entry : label_tally) {
             Amount nAmount = entry.second.nAmount;
             int nConf = entry.second.nConf;
             UniValue obj(UniValue::VOBJ);
             if (entry.second.fIsWatchonly) {
                 obj.pushKV("involvesWatchonly", true);
             }
             obj.pushKV("amount", ValueFromAmount(nAmount));
             obj.pushKV("confirmations",
                        (nConf == std::numeric_limits<int>::max() ? 0 : nConf));
             obj.pushKV("label", entry.first);
             ret.push_back(obj);
         }
     }
 
     return ret;
 }
 
 static UniValue listreceivedbyaddress(const Config &config,
                                       const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     const CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "listreceivedbyaddress",
         "List balances by receiving address.\n",
         {
             {"minconf", RPCArg::Type::NUM, /* default */ "1",
              "The minimum number of confirmations before payments are "
              "included."},
             {"include_empty", RPCArg::Type::BOOL, /* default */ "false",
              "Whether to include addresses that haven't received any "
              "payments."},
             {"include_watchonly", RPCArg::Type::BOOL,
              /* default */ "true for watch-only wallets, otherwise false",
              "Whether to include watch-only addresses (see 'importaddress')."},
             {"address_filter", RPCArg::Type::STR,
              RPCArg::Optional::OMITTED_NAMED_ARG,
              "If present, only return information on this address."},
         },
         RPCResult{
             RPCResult::Type::ARR,
             "",
             "",
             {
                 {RPCResult::Type::OBJ,
                  "",
                  "",
                  {
                      {RPCResult::Type::BOOL, "involvesWatchonly",
                       "Only returns true if imported addresses were involved "
                       "in transaction"},
                      {RPCResult::Type::STR, "address", "The receiving address"},
                      {RPCResult::Type::STR_AMOUNT, "amount",
                       "The total amount in " + CURRENCY_UNIT +
                           " received by the address"},
                      {RPCResult::Type::NUM, "confirmations",
                       "The number of confirmations of the most recent "
                       "transaction included"},
                      {RPCResult::Type::STR, "label",
                       "The label of the receiving address. The default label "
                       "is \"\""},
                      {RPCResult::Type::ARR,
                       "txids",
                       "",
                       {
                           {RPCResult::Type::STR_HEX, "txid",
                            "The ids of transactions received with the address"},
                       }},
                  }},
             }},
         RPCExamples{
             HelpExampleCli("listreceivedbyaddress", "") +
             HelpExampleCli("listreceivedbyaddress", "6 true") +
             HelpExampleRpc("listreceivedbyaddress", "6, true, true") +
             HelpExampleRpc(
                 "listreceivedbyaddress",
                 "6, true, true, \"1M72Sfpbz1BPpXFHz9m3CdqATR44Jvaydd\"")},
     }
         .Check(request);
 
     // Make sure the results are valid at least up to the most recent block
     // the user could have gotten from another RPC command prior to now
     pwallet->BlockUntilSyncedToCurrentChain();
 
     LOCK(pwallet->cs_wallet);
 
     return ListReceived(config, pwallet, request.params, false);
 }
 
 static UniValue listreceivedbylabel(const Config &config,
                                     const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     const CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "listreceivedbylabel",
         "List received transactions by label.\n",
         {
             {"minconf", RPCArg::Type::NUM, /* default */ "1",
              "The minimum number of confirmations before payments are "
              "included."},
             {"include_empty", RPCArg::Type::BOOL, /* default */ "false",
              "Whether to include labels that haven't received any payments."},
             {"include_watchonly", RPCArg::Type::BOOL,
              /* default */ "true for watch-only wallets, otherwise false",
              "Whether to include watch-only addresses (see 'importaddress')."},
         },
         RPCResult{
             RPCResult::Type::ARR,
             "",
             "",
             {
                 {RPCResult::Type::OBJ,
                  "",
                  "",
                  {
                      {RPCResult::Type::BOOL, "involvesWatchonly",
                       "Only returns true if imported addresses were involved "
                       "in transaction"},
                      {RPCResult::Type::STR_AMOUNT, "amount",
                       "The total amount received by addresses with this label"},
                      {RPCResult::Type::NUM, "confirmations",
                       "The number of confirmations of the most recent "
                       "transaction included"},
                      {RPCResult::Type::STR, "label",
                       "The label of the receiving address. The default label "
                       "is \"\""},
                  }},
             }},
         RPCExamples{HelpExampleCli("listreceivedbylabel", "") +
                     HelpExampleCli("listreceivedbylabel", "6 true") +
                     HelpExampleRpc("listreceivedbylabel", "6, true, true")},
     }
         .Check(request);
 
     // Make sure the results are valid at least up to the most recent block
     // the user could have gotten from another RPC command prior to now
     pwallet->BlockUntilSyncedToCurrentChain();
 
     LOCK(pwallet->cs_wallet);
 
     return ListReceived(config, pwallet, request.params, true);
 }
 
 static void MaybePushAddress(UniValue &entry, const CTxDestination &dest) {
     if (IsValidDestination(dest)) {
         entry.pushKV("address", EncodeDestination(dest, GetConfig()));
     }
 }
 
 /**
  * List transactions based on the given criteria.
  *
  * @param  pwallet        The wallet.
  * @param  wtx            The wallet transaction.
  * @param  nMinDepth      The minimum confirmation depth.
  * @param  fLong          Whether to include the JSON version of the
  * transaction.
  * @param  ret            The UniValue into which the result is stored.
  * @param  filter_ismine  The "is mine" filter flags.
  * @param  filter_label   Optional label string to filter incoming transactions.
  */
 static void ListTransactions(const CWallet *const pwallet, const CWalletTx &wtx,
                              int nMinDepth, bool fLong, UniValue &ret,
                              const isminefilter &filter_ismine,
                              const std::string *filter_label)
     EXCLUSIVE_LOCKS_REQUIRED(pwallet->cs_wallet) {
     Amount nFee;
     std::list<COutputEntry> listReceived;
     std::list<COutputEntry> listSent;
 
     wtx.GetAmounts(listReceived, listSent, nFee, filter_ismine);
 
     bool involvesWatchonly = wtx.IsFromMe(ISMINE_WATCH_ONLY);
 
     // Sent
     if (!filter_label) {
         for (const COutputEntry &s : listSent) {
             UniValue entry(UniValue::VOBJ);
             if (involvesWatchonly ||
                 (pwallet->IsMine(s.destination) & ISMINE_WATCH_ONLY)) {
                 entry.pushKV("involvesWatchonly", true);
             }
             MaybePushAddress(entry, s.destination);
             entry.pushKV("category", "send");
             entry.pushKV("amount", ValueFromAmount(-s.amount));
             const auto *address_book_entry =
                 pwallet->FindAddressBookEntry(s.destination);
             if (address_book_entry) {
                 entry.pushKV("label", address_book_entry->GetLabel());
             }
             entry.pushKV("vout", s.vout);
             entry.pushKV("fee", ValueFromAmount(-1 * nFee));
             if (fLong) {
                 WalletTxToJSON(pwallet->chain(), wtx, entry);
             }
             entry.pushKV("abandoned", wtx.isAbandoned());
             ret.push_back(entry);
         }
     }
 
     // Received
     if (listReceived.size() > 0 && wtx.GetDepthInMainChain() >= nMinDepth) {
         for (const COutputEntry &r : listReceived) {
             std::string label;
             const auto *address_book_entry =
                 pwallet->FindAddressBookEntry(r.destination);
             if (address_book_entry) {
                 label = address_book_entry->GetLabel();
             }
             if (filter_label && label != *filter_label) {
                 continue;
             }
             UniValue entry(UniValue::VOBJ);
             if (involvesWatchonly ||
                 (pwallet->IsMine(r.destination) & ISMINE_WATCH_ONLY)) {
                 entry.pushKV("involvesWatchonly", true);
             }
             MaybePushAddress(entry, r.destination);
             if (wtx.IsCoinBase()) {
                 if (wtx.GetDepthInMainChain() < 1) {
                     entry.pushKV("category", "orphan");
                 } else if (wtx.IsImmatureCoinBase()) {
                     entry.pushKV("category", "immature");
                 } else {
                     entry.pushKV("category", "generate");
                 }
             } else {
                 entry.pushKV("category", "receive");
             }
             entry.pushKV("amount", ValueFromAmount(r.amount));
             if (address_book_entry) {
                 entry.pushKV("label", label);
             }
             entry.pushKV("vout", r.vout);
             if (fLong) {
                 WalletTxToJSON(pwallet->chain(), wtx, entry);
             }
             ret.push_back(entry);
         }
     }
 }
 
 static const std::vector<RPCResult> TransactionDescriptionString() {
     return {
         {RPCResult::Type::NUM, "confirmations",
          "The number of confirmations for the transaction. Negative "
          "confirmations means the\n"
          "transaction conflicted that many blocks ago."},
         {RPCResult::Type::BOOL, "generated",
          "Only present if transaction only input is a coinbase one."},
         {RPCResult::Type::BOOL, "trusted",
          "Only present if we consider transaction to be trusted and so safe to "
          "spend from."},
         {RPCResult::Type::STR_HEX, "blockhash",
          "The block hash containing the transaction."},
         {RPCResult::Type::NUM, "blockheight",
          "The block height containing the transaction."},
         {RPCResult::Type::NUM, "blockindex",
          "The index of the transaction in the block that includes it."},
         {RPCResult::Type::NUM_TIME, "blocktime",
          "The block time expressed in " + UNIX_EPOCH_TIME + "."},
         {RPCResult::Type::STR_HEX, "txid", "The transaction id."},
         {RPCResult::Type::ARR,
          "walletconflicts",
          "Conflicting transaction ids.",
          {
              {RPCResult::Type::STR_HEX, "txid", "The transaction id."},
          }},
         {RPCResult::Type::NUM_TIME, "time",
          "The transaction time expressed in " + UNIX_EPOCH_TIME + "."},
         {RPCResult::Type::NUM_TIME, "timereceived",
          "The time received expressed in " + UNIX_EPOCH_TIME + "."},
         {RPCResult::Type::STR, "comment",
          "If a comment is associated with the transaction, only present if not "
          "empty."},
     };
 }
 
 UniValue listtransactions(const Config &config, const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     const CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "listtransactions",
         "If a label name is provided, this will return only incoming "
         "transactions paying to addresses with the specified label.\n"
         "\nReturns up to 'count' most recent transactions skipping the first "
         "'from' transactions.\n",
         {
             {"label|dummy", RPCArg::Type::STR,
              RPCArg::Optional::OMITTED_NAMED_ARG,
              "If set, should be a valid label name to return only incoming "
              "transactions with the specified label, or \"*\" to disable "
              "filtering and return all transactions."},
             {"count", RPCArg::Type::NUM, /* default */ "10",
              "The number of transactions to return"},
             {"skip", RPCArg::Type::NUM, /* default */ "0",
              "The number of transactions to skip"},
             {"include_watchonly", RPCArg::Type::BOOL,
              /* default */ "true for watch-only wallets, otherwise false",
              "Include transactions to watch-only addresses (see "
              "'importaddress')"},
         },
         RPCResult{
             RPCResult::Type::ARR,
             "",
             "",
             {
                 {RPCResult::Type::OBJ, "", "",
                  Cat(Cat<std::vector<RPCResult>>(
                          {
                              {RPCResult::Type::BOOL, "involvesWatchonly",
                               "Only returns true if imported addresses were "
                               "involved in transaction."},
                              {RPCResult::Type::STR, "address",
                               "The bitcoin address of the transaction."},
                              {RPCResult::Type::STR, "category",
                               "The transaction category.\n"
                               "\"send\"                  Transactions sent.\n"
                               "\"receive\"               Non-coinbase "
                               "transactions received.\n"
                               "\"generate\"              Coinbase transactions "
                               "received with more than 100 confirmations.\n"
                               "\"immature\"              Coinbase transactions "
                               "received with 100 or fewer confirmations.\n"
                               "\"orphan\"                Orphaned coinbase "
                               "transactions received."},
                              {RPCResult::Type::STR_AMOUNT, "amount",
                               "The amount in " + CURRENCY_UNIT +
                                   ". This is negative for the 'send' category, "
                                   "and is positive\n"
                                   "for all other categories"},
                              {RPCResult::Type::STR, "label",
                               "A comment for the address/transaction, if any"},
                              {RPCResult::Type::NUM, "vout", "the vout value"},
                              {RPCResult::Type::STR_AMOUNT, "fee",
                               "The amount of the fee in " + CURRENCY_UNIT +
                                   ". This is negative and only available for "
                                   "the\n"
                                   "'send' category of transactions."},
                          },
                          TransactionDescriptionString()),
                      {
                          {RPCResult::Type::BOOL, "abandoned",
                           "'true' if the transaction has been abandoned "
                           "(inputs are respendable). Only available for the \n"
                           "'send' category of transactions."},
                      })},
             }},
         RPCExamples{"\nList the most recent 10 transactions in the systems\n" +
                     HelpExampleCli("listtransactions", "") +
                     "\nList transactions 100 to 120\n" +
                     HelpExampleCli("listtransactions", "\"*\" 20 100") +
                     "\nAs a JSON-RPC call\n" +
                     HelpExampleRpc("listtransactions", "\"*\", 20, 100")},
     }
         .Check(request);
 
     // Make sure the results are valid at least up to the most recent block
     // the user could have gotten from another RPC command prior to now
     pwallet->BlockUntilSyncedToCurrentChain();
 
     const std::string *filter_label = nullptr;
     if (!request.params[0].isNull() && request.params[0].get_str() != "*") {
         filter_label = &request.params[0].get_str();
         if (filter_label->empty()) {
             throw JSONRPCError(
                 RPC_INVALID_PARAMETER,
                 "Label argument must be a valid label name or \"*\".");
         }
     }
     int nCount = 10;
     if (!request.params[1].isNull()) {
         nCount = request.params[1].get_int();
     }
 
     int nFrom = 0;
     if (!request.params[2].isNull()) {
         nFrom = request.params[2].get_int();
     }
 
     isminefilter filter = ISMINE_SPENDABLE;
     if (ParseIncludeWatchonly(request.params[3], *pwallet)) {
         filter |= ISMINE_WATCH_ONLY;
     }
 
     if (nCount < 0) {
         throw JSONRPCError(RPC_INVALID_PARAMETER, "Negative count");
     }
     if (nFrom < 0) {
         throw JSONRPCError(RPC_INVALID_PARAMETER, "Negative from");
     }
     UniValue ret(UniValue::VARR);
 
     {
         LOCK(pwallet->cs_wallet);
 
         const CWallet::TxItems &txOrdered = pwallet->wtxOrdered;
 
         // iterate backwards until we have nCount items to return:
         for (CWallet::TxItems::const_reverse_iterator it = txOrdered.rbegin();
              it != txOrdered.rend(); ++it) {
             CWalletTx *const pwtx = (*it).second;
             ListTransactions(pwallet, *pwtx, 0, true, ret, filter,
                              filter_label);
             if (int(ret.size()) >= (nCount + nFrom)) {
                 break;
             }
         }
     }
 
     // ret is newest to oldest
 
     if (nFrom > (int)ret.size()) {
         nFrom = ret.size();
     }
     if ((nFrom + nCount) > (int)ret.size()) {
         nCount = ret.size() - nFrom;
     }
 
     const std::vector<UniValue> &txs = ret.getValues();
     UniValue result{UniValue::VARR};
     // Return oldest to newest
     result.push_backV({txs.rend() - nFrom - nCount, txs.rend() - nFrom});
     return result;
 }
 
 static UniValue listsinceblock(const Config &config,
                                const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     const CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "listsinceblock",
         "Get all transactions in blocks since block [blockhash], or all "
         "transactions if omitted.\n"
         "If \"blockhash\" is no longer a part of the main chain, transactions "
         "from the fork point onward are included.\n"
         "Additionally, if include_removed is set, transactions affecting the "
         "wallet which were removed are returned in the \"removed\" array.\n",
         {
             {"blockhash", RPCArg::Type::STR,
              RPCArg::Optional::OMITTED_NAMED_ARG,
              "If set, the block hash to list transactions since, otherwise "
              "list all transactions."},
             {"target_confirmations", RPCArg::Type::NUM, /* default */ "1",
              "Return the nth block hash from the main chain. e.g. 1 would mean "
              "the best block hash. Note: this is not used as a filter, but "
              "only affects [lastblock] in the return value"},
             {"include_watchonly", RPCArg::Type::BOOL,
              /* default */ "true for watch-only wallets, otherwise false",
              "Include transactions to watch-only addresses (see "
              "'importaddress')"},
             {"include_removed", RPCArg::Type::BOOL, /* default */ "true",
              "Show transactions that were removed due to a reorg in the "
              "\"removed\" array\n"
              "                                                           (not "
              "guaranteed to work on pruned nodes)"},
         },
         RPCResult{
             RPCResult::Type::OBJ,
             "",
             "",
             {
                 {RPCResult::Type::ARR,
                  "transactions",
                  "",
                  {
                      {RPCResult::Type::OBJ, "", "",
                       Cat(Cat<std::vector<RPCResult>>(
                               {
                                   {RPCResult::Type::BOOL, "involvesWatchonly",
                                    "Only returns true if imported addresses "
                                    "were involved in transaction."},
                                   {RPCResult::Type::STR, "address",
                                    "The bitcoin address of the transaction."},
                                   {RPCResult::Type::STR, "category",
                                    "The transaction category.\n"
                                    "\"send\"                  Transactions "
                                    "sent.\n"
                                    "\"receive\"               Non-coinbase "
                                    "transactions received.\n"
                                    "\"generate\"              Coinbase "
                                    "transactions received with more than 100 "
                                    "confirmations.\n"
                                    "\"immature\"              Coinbase "
                                    "transactions received with 100 or fewer "
                                    "confirmations.\n"
                                    "\"orphan\"                Orphaned "
                                    "coinbase transactions received."},
                                   {RPCResult::Type::STR_AMOUNT, "amount",
                                    "The amount in " + CURRENCY_UNIT +
                                        ". This is negative for the 'send' "
                                        "category, and is positive\n"
                                        "for all other categories"},
                                   {RPCResult::Type::NUM, "vout",
                                    "the vout value"},
                                   {RPCResult::Type::STR_AMOUNT, "fee",
                                    "The amount of the fee in " + CURRENCY_UNIT +
                                        ". This is negative and only available "
                                        "for the\n"
                                        "'send' category of transactions."},
                               },
                               TransactionDescriptionString()),
                           {
                               {RPCResult::Type::BOOL, "abandoned",
                                "'true' if the transaction has been abandoned "
                                "(inputs are respendable). Only available for "
                                "the \n"
                                "'send' category of transactions."},
                               {RPCResult::Type::STR, "comment",
                                "If a comment is associated with the "
                                "transaction."},
                               {RPCResult::Type::STR, "label",
                                "A comment for the address/transaction, if any"},
                               {RPCResult::Type::STR, "to",
                                "If a comment to is associated with the "
                                "transaction."},
                           })},
                  }},
                 {RPCResult::Type::ARR,
                  "removed",
                  "<structure is the same as \"transactions\" above, only "
                  "present if include_removed=true>\n"
                  "Note: transactions that were re-added in the active chain "
                  "will appear as-is in this array, and may thus have a "
                  "positive confirmation count.",
                  {
                      {RPCResult::Type::ELISION, "", ""},
                  }},
                 {RPCResult::Type::STR_HEX, "lastblock",
                  "The hash of the block (target_confirmations-1) from the best "
                  "block on the main chain. This is typically used to feed back "
                  "into listsinceblock the next time you call it. So you would "
                  "generally use a target_confirmations of say 6, so you will "
                  "be continually re-notified of transactions until they've "
                  "reached 6 confirmations plus any new ones"},
             }},
         RPCExamples{HelpExampleCli("listsinceblock", "") +
                     HelpExampleCli("listsinceblock",
                                    "\"000000000000000bacf66f7497b7dc45ef753ee9a"
                                    "7d38571037cdb1a57f663ad\" 6") +
                     HelpExampleRpc("listsinceblock",
                                    "\"000000000000000bacf66f7497b7dc45ef753ee9a"
                                    "7d38571037cdb1a57f663ad\", 6")},
     }
         .Check(request);
 
     // Make sure the results are valid at least up to the most recent block
     // the user could have gotten from another RPC command prior to now
     pwallet->BlockUntilSyncedToCurrentChain();
 
     LOCK(pwallet->cs_wallet);
 
     // Height of the specified block or the common ancestor, if the block
     // provided was in a deactivated chain.
     std::optional<int> height;
 
     // Height of the specified block, even if it's in a deactivated chain.
     std::optional<int> altheight;
     int target_confirms = 1;
     isminefilter filter = ISMINE_SPENDABLE;
 
     BlockHash blockId;
     if (!request.params[0].isNull() && !request.params[0].get_str().empty()) {
         blockId = BlockHash(ParseHashV(request.params[0], "blockhash"));
         height.emplace();
         altheight.emplace();
         if (!pwallet->chain().findCommonAncestor(
                 blockId, pwallet->GetLastBlockHash(),
                 /* ancestor out */ FoundBlock().height(*height),
                 /* blockId out */ FoundBlock().height(*altheight))) {
             throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Block not found");
         }
     }
 
     if (!request.params[1].isNull()) {
         target_confirms = request.params[1].get_int();
 
         if (target_confirms < 1) {
             throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter");
         }
     }
 
     if (ParseIncludeWatchonly(request.params[2], *pwallet)) {
         filter |= ISMINE_WATCH_ONLY;
     }
 
     bool include_removed =
         (request.params[3].isNull() || request.params[3].get_bool());
 
     int depth = height ? pwallet->GetLastBlockHeight() + 1 - *height : -1;
 
     UniValue transactions(UniValue::VARR);
 
     for (const std::pair<const TxId, CWalletTx> &pairWtx : pwallet->mapWallet) {
         CWalletTx tx = pairWtx.second;
 
         if (depth == -1 || tx.GetDepthInMainChain() < depth) {
             ListTransactions(pwallet, tx, 0, true, transactions, filter,
                              nullptr /* filter_label */);
         }
     }
 
     // when a reorg'd block is requested, we also list any relevant transactions
     // in the blocks of the chain that was detached
     UniValue removed(UniValue::VARR);
     while (include_removed && altheight && *altheight > *height) {
         CBlock block;
         if (!pwallet->chain().findBlock(blockId, FoundBlock().data(block)) ||
             block.IsNull()) {
             throw JSONRPCError(RPC_INTERNAL_ERROR,
                                "Can't read block from disk");
         }
         for (const CTransactionRef &tx : block.vtx) {
             auto it = pwallet->mapWallet.find(tx->GetId());
             if (it != pwallet->mapWallet.end()) {
                 // We want all transactions regardless of confirmation count to
                 // appear here, even negative confirmation ones, hence the big
                 // negative.
                 ListTransactions(pwallet, it->second, -100000000, true, removed,
                                  filter, nullptr /* filter_label */);
             }
         }
         blockId = block.hashPrevBlock;
         --*altheight;
     }
 
     BlockHash lastblock;
     CHECK_NONFATAL(pwallet->chain().findAncestorByHeight(
         pwallet->GetLastBlockHash(),
         pwallet->GetLastBlockHeight() + 1 - target_confirms,
         FoundBlock().hash(lastblock)));
 
     UniValue ret(UniValue::VOBJ);
     ret.pushKV("transactions", transactions);
     if (include_removed) {
         ret.pushKV("removed", removed);
     }
     ret.pushKV("lastblock", lastblock.GetHex());
 
     return ret;
 }
 
 static UniValue gettransaction(const Config &config,
                                const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     const CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "gettransaction",
         "Get detailed information about in-wallet transaction <txid>\n",
         {
             {"txid", RPCArg::Type::STR, RPCArg::Optional::NO,
              "The transaction id"},
             {"include_watchonly", RPCArg::Type::BOOL,
              /* default */ "true for watch-only wallets, otherwise false",
              "Whether to include watch-only addresses in balance calculation "
              "and details[]"},
             {"verbose", RPCArg::Type::BOOL, /* default */ "false",
              "Whether to include a `decoded` field containing the decoded "
              "transaction (equivalent to RPC decoderawtransaction)"},
         },
         RPCResult{
             RPCResult::Type::OBJ, "", "",
             Cat(Cat<std::vector<RPCResult>>(
                     {
                         {RPCResult::Type::STR_AMOUNT, "amount",
                          "The amount in " + CURRENCY_UNIT},
                         {RPCResult::Type::STR_AMOUNT, "fee",
                          "The amount of the fee in " + CURRENCY_UNIT +
                              ". This is negative and only available for the\n"
                              "'send' category of transactions."},
                     },
                     TransactionDescriptionString()),
                 {
                     {RPCResult::Type::ARR,
                      "details",
                      "",
                      {
                          {RPCResult::Type::OBJ,
                           "",
                           "",
                           {
                               {RPCResult::Type::BOOL, "involvesWatchonly",
                                "Only returns true if imported addresses were "
                                "involved in transaction."},
                               {RPCResult::Type::STR, "address",
                                "The bitcoin address involved in the "
                                "transaction."},
                               {RPCResult::Type::STR, "category",
                                "The transaction category.\n"
                                "\"send\"                  Transactions sent.\n"
                                "\"receive\"               Non-coinbase "
                                "transactions received.\n"
                                "\"generate\"              Coinbase "
                                "transactions received with more than 100 "
                                "confirmations.\n"
                                "\"immature\"              Coinbase "
                                "transactions received with 100 or fewer "
                                "confirmations.\n"
                                "\"orphan\"                Orphaned coinbase "
                                "transactions received."},
                               {RPCResult::Type::STR_AMOUNT, "amount",
                                "The amount in " + CURRENCY_UNIT},
                               {RPCResult::Type::STR, "label",
                                "A comment for the address/transaction, if any"},
                               {RPCResult::Type::NUM, "vout", "the vout value"},
                               {RPCResult::Type::STR_AMOUNT, "fee",
                                "The amount of the fee in " + CURRENCY_UNIT +
                                    ". This is negative and only available for "
                                    "the \n"
                                    "'send' category of transactions."},
                               {RPCResult::Type::BOOL, "abandoned",
                                "'true' if the transaction has been abandoned "
                                "(inputs are respendable). Only available for "
                                "the \n"
                                "'send' category of transactions."},
                           }},
                      }},
                     {RPCResult::Type::STR_HEX, "hex",
                      "Raw data for transaction"},
                     {RPCResult::Type::OBJ,
                      "decoded",
                      "Optional, the decoded transaction (only present when "
                      "`verbose` is passed)",
                      {
                          {RPCResult::Type::ELISION, "",
                           "Equivalent to the RPC decoderawtransaction method, "
                           "or the RPC getrawtransaction method when `verbose` "
                           "is passed."},
                      }},
                 })},
         RPCExamples{HelpExampleCli("gettransaction",
                                    "\"1075db55d416d3ca199f55b6084e2115b9345e16c"
                                    "5cf302fc80e9d5fbf5d48d\"") +
                     HelpExampleCli("gettransaction",
                                    "\"1075db55d416d3ca199f55b6084e2115b9345e16c"
                                    "5cf302fc80e9d5fbf5d48d\" true") +
                     HelpExampleCli("gettransaction",
                                    "\"1075db55d416d3ca199f55b6084e2115b9345e16c"
                                    "5cf302fc80e9d5fbf5d48d\" false true") +
                     HelpExampleRpc("gettransaction",
                                    "\"1075db55d416d3ca199f55b6084e2115b9345e16c"
                                    "5cf302fc80e9d5fbf5d48d\"")},
     }
         .Check(request);
 
     // Make sure the results are valid at least up to the most recent block
     // the user could have gotten from another RPC command prior to now
     pwallet->BlockUntilSyncedToCurrentChain();
 
     LOCK(pwallet->cs_wallet);
 
     TxId txid(ParseHashV(request.params[0], "txid"));
 
     isminefilter filter = ISMINE_SPENDABLE;
     if (ParseIncludeWatchonly(request.params[1], *pwallet)) {
         filter |= ISMINE_WATCH_ONLY;
     }
 
     bool verbose =
         request.params[2].isNull() ? false : request.params[2].get_bool();
 
     UniValue entry(UniValue::VOBJ);
     auto it = pwallet->mapWallet.find(txid);
     if (it == pwallet->mapWallet.end()) {
         throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY,
                            "Invalid or non-wallet transaction id");
     }
     const CWalletTx &wtx = it->second;
 
     Amount nCredit = wtx.GetCredit(filter);
     Amount nDebit = wtx.GetDebit(filter);
     Amount nNet = nCredit - nDebit;
     Amount nFee = (wtx.IsFromMe(filter) ? wtx.tx->GetValueOut() - nDebit
                                         : Amount::zero());
 
     entry.pushKV("amount", ValueFromAmount(nNet - nFee));
     if (wtx.IsFromMe(filter)) {
         entry.pushKV("fee", ValueFromAmount(nFee));
     }
 
     WalletTxToJSON(pwallet->chain(), wtx, entry);
 
     UniValue details(UniValue::VARR);
     ListTransactions(pwallet, wtx, 0, false, details, filter,
                      nullptr /* filter_label */);
     entry.pushKV("details", details);
 
     std::string strHex =
         EncodeHexTx(*wtx.tx, pwallet->chain().rpcSerializationFlags());
     entry.pushKV("hex", strHex);
 
     if (verbose) {
         UniValue decoded(UniValue::VOBJ);
         TxToUniv(*wtx.tx, uint256(), decoded, false);
         entry.pushKV("decoded", decoded);
     }
 
     return entry;
 }
 
 static UniValue abandontransaction(const Config &config,
                                    const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "abandontransaction",
         "Mark in-wallet transaction <txid> as abandoned\n"
         "This will mark this transaction and all its in-wallet descendants as "
         "abandoned which will allow\n"
         "for their inputs to be respent.  It can be used to replace \"stuck\" "
         "or evicted transactions.\n"
         "It only works on transactions which are not included in a block and "
         "are not currently in the mempool.\n"
         "It has no effect on transactions which are already abandoned.\n",
         {
             {"txid", RPCArg::Type::STR_HEX, RPCArg::Optional::NO,
              "The transaction id"},
         },
         RPCResults{},
         RPCExamples{HelpExampleCli("abandontransaction",
                                    "\"1075db55d416d3ca199f55b6084e2115b9345e16c"
                                    "5cf302fc80e9d5fbf5d48d\"") +
                     HelpExampleRpc("abandontransaction",
                                    "\"1075db55d416d3ca199f55b6084e2115b9345e16c"
                                    "5cf302fc80e9d5fbf5d48d\"")},
     }
         .Check(request);
 
     // Make sure the results are valid at least up to the most recent block
     // the user could have gotten from another RPC command prior to now
     pwallet->BlockUntilSyncedToCurrentChain();
 
     LOCK(pwallet->cs_wallet);
 
     TxId txid(ParseHashV(request.params[0], "txid"));
 
     if (!pwallet->mapWallet.count(txid)) {
         throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY,
                            "Invalid or non-wallet transaction id");
     }
 
     if (!pwallet->AbandonTransaction(txid)) {
         throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY,
                            "Transaction not eligible for abandonment");
     }
 
     return NullUniValue;
 }
 
 static UniValue backupwallet(const Config &config,
                              const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     const CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "backupwallet",
         "Safely copies current wallet file to destination, which can be a "
         "directory or a path with filename.\n",
         {
             {"destination", RPCArg::Type::STR, RPCArg::Optional::NO,
              "The destination directory or file"},
         },
         RPCResults{},
         RPCExamples{HelpExampleCli("backupwallet", "\"backup.dat\"") +
                     HelpExampleRpc("backupwallet", "\"backup.dat\"")},
     }
         .Check(request);
 
     // Make sure the results are valid at least up to the most recent block
     // the user could have gotten from another RPC command prior to now
     pwallet->BlockUntilSyncedToCurrentChain();
 
     LOCK(pwallet->cs_wallet);
 
     std::string strDest = request.params[0].get_str();
     if (!pwallet->BackupWallet(strDest)) {
         throw JSONRPCError(RPC_WALLET_ERROR, "Error: Wallet backup failed!");
     }
 
     return NullUniValue;
 }
 
 static UniValue keypoolrefill(const Config &config,
                               const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "keypoolrefill",
         "Fills the keypool." + HelpRequiringPassphrase(pwallet) + "\n",
         {
             {"newsize", RPCArg::Type::NUM, /* default */ "100",
              "The new keypool size"},
         },
         RPCResults{},
         RPCExamples{HelpExampleCli("keypoolrefill", "") +
                     HelpExampleRpc("keypoolrefill", "")},
     }
         .Check(request);
 
     if (pwallet->IsLegacy() &&
         pwallet->IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS)) {
         throw JSONRPCError(RPC_WALLET_ERROR,
                            "Error: Private keys are disabled for this wallet");
     }
 
     LOCK(pwallet->cs_wallet);
 
     // 0 is interpreted by TopUpKeyPool() as the default keypool size given by
     // -keypool
     unsigned int kpSize = 0;
     if (!request.params[0].isNull()) {
         if (request.params[0].get_int() < 0) {
             throw JSONRPCError(RPC_INVALID_PARAMETER,
                                "Invalid parameter, expected valid size.");
         }
         kpSize = (unsigned int)request.params[0].get_int();
     }
 
     EnsureWalletIsUnlocked(pwallet);
     pwallet->TopUpKeyPool(kpSize);
 
     if (pwallet->GetKeyPoolSize() < kpSize) {
         throw JSONRPCError(RPC_WALLET_ERROR, "Error refreshing keypool.");
     }
 
     return NullUniValue;
 }
 
 static UniValue walletpassphrase(const Config &config,
                                  const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "walletpassphrase",
         "Stores the wallet decryption key in memory for 'timeout' seconds.\n"
         "This is needed prior to performing transactions related to private "
         "keys such as sending bitcoins\n"
         "\nNote:\n"
         "Issuing the walletpassphrase command while the wallet is already "
         "unlocked will set a new unlock\n"
         "time that overrides the old one.\n",
         {
             {"passphrase", RPCArg::Type::STR, RPCArg::Optional::NO,
              "The wallet passphrase"},
             {"timeout", RPCArg::Type::NUM, RPCArg::Optional::NO,
              "The time to keep the decryption key in seconds; capped at "
              "100000000 (~3 years)."},
         },
         RPCResults{},
         RPCExamples{
             "\nUnlock the wallet for 60 seconds\n" +
             HelpExampleCli("walletpassphrase", "\"my pass phrase\" 60") +
             "\nLock the wallet again (before 60 seconds)\n" +
             HelpExampleCli("walletlock", "") + "\nAs a JSON-RPC call\n" +
             HelpExampleRpc("walletpassphrase", "\"my pass phrase\", 60")},
     }
         .Check(request);
 
     int64_t nSleepTime;
     {
         LOCK(pwallet->cs_wallet);
 
         if (!pwallet->IsCrypted()) {
             throw JSONRPCError(RPC_WALLET_WRONG_ENC_STATE,
                                "Error: running with an unencrypted wallet, but "
                                "walletpassphrase was called.");
         }
 
         // Note that the walletpassphrase is stored in request.params[0] which
         // is not mlock()ed
         SecureString strWalletPass;
         strWalletPass.reserve(100);
         // TODO: get rid of this .c_str() by implementing
         // SecureString::operator=(std::string)
         // Alternately, find a way to make request.params[0] mlock()'d to begin
         // with.
         strWalletPass = request.params[0].get_str().c_str();
 
         // Get the timeout
         nSleepTime = request.params[1].get_int64();
         // Timeout cannot be negative, otherwise it will relock immediately
         if (nSleepTime < 0) {
             throw JSONRPCError(RPC_INVALID_PARAMETER,
                                "Timeout cannot be negative.");
         }
         // Clamp timeout
         // larger values trigger a macos/libevent bug?
         constexpr int64_t MAX_SLEEP_TIME = 100000000;
         if (nSleepTime > MAX_SLEEP_TIME) {
             nSleepTime = MAX_SLEEP_TIME;
         }
 
         if (strWalletPass.empty()) {
             throw JSONRPCError(RPC_INVALID_PARAMETER,
                                "passphrase can not be empty");
         }
 
         if (!pwallet->Unlock(strWalletPass)) {
             throw JSONRPCError(
                 RPC_WALLET_PASSPHRASE_INCORRECT,
                 "Error: The wallet passphrase entered was incorrect.");
         }
 
         pwallet->TopUpKeyPool();
 
         pwallet->nRelockTime = GetTime() + nSleepTime;
     }
 
     // rpcRunLater must be called without cs_wallet held otherwise a deadlock
     // can occur. The deadlock would happen when RPCRunLater removes the
     // previous timer (and waits for the callback to finish if already running)
     // and the callback locks cs_wallet.
     AssertLockNotHeld(wallet->cs_wallet);
     // Keep a weak pointer to the wallet so that it is possible to unload the
     // wallet before the following callback is called. If a valid shared pointer
     // is acquired in the callback then the wallet is still loaded.
     std::weak_ptr<CWallet> weak_wallet = wallet;
     pwallet->chain().rpcRunLater(
         strprintf("lockwallet(%s)", pwallet->GetName()),
         [weak_wallet] {
             if (auto shared_wallet = weak_wallet.lock()) {
                 LOCK(shared_wallet->cs_wallet);
                 shared_wallet->Lock();
                 shared_wallet->nRelockTime = 0;
             }
         },
         nSleepTime);
 
     return NullUniValue;
 }
 
 static UniValue walletpassphrasechange(const Config &config,
                                        const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "walletpassphrasechange",
         "Changes the wallet passphrase from 'oldpassphrase' to "
         "'newpassphrase'.\n",
         {
             {"oldpassphrase", RPCArg::Type::STR, RPCArg::Optional::NO,
              "The current passphrase"},
             {"newpassphrase", RPCArg::Type::STR, RPCArg::Optional::NO,
              "The new passphrase"},
         },
         RPCResults{},
         RPCExamples{HelpExampleCli("walletpassphrasechange",
                                    "\"old one\" \"new one\"") +
                     HelpExampleRpc("walletpassphrasechange",
                                    "\"old one\", \"new one\"")},
     }
         .Check(request);
 
     LOCK(pwallet->cs_wallet);
 
     if (!pwallet->IsCrypted()) {
         throw JSONRPCError(RPC_WALLET_WRONG_ENC_STATE,
                            "Error: running with an unencrypted wallet, but "
                            "walletpassphrasechange was called.");
     }
 
     // TODO: get rid of these .c_str() calls by implementing
     // SecureString::operator=(std::string)
     // Alternately, find a way to make request.params[0] mlock()'d to begin
     // with.
     SecureString strOldWalletPass;
     strOldWalletPass.reserve(100);
     strOldWalletPass = request.params[0].get_str().c_str();
 
     SecureString strNewWalletPass;
     strNewWalletPass.reserve(100);
     strNewWalletPass = request.params[1].get_str().c_str();
 
     if (strOldWalletPass.empty() || strNewWalletPass.empty()) {
         throw JSONRPCError(RPC_INVALID_PARAMETER,
                            "passphrase can not be empty");
     }
 
     if (!pwallet->ChangeWalletPassphrase(strOldWalletPass, strNewWalletPass)) {
         throw JSONRPCError(
             RPC_WALLET_PASSPHRASE_INCORRECT,
             "Error: The wallet passphrase entered was incorrect.");
     }
 
     return NullUniValue;
 }
 
 static UniValue walletlock(const Config &config,
                            const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "walletlock",
         "Removes the wallet encryption key from memory, locking the wallet.\n"
         "After calling this method, you will need to call walletpassphrase "
         "again\n"
         "before being able to call any methods which require the wallet to be "
         "unlocked.\n",
         {},
         RPCResults{},
         RPCExamples{
             "\nSet the passphrase for 2 minutes to perform a transaction\n" +
             HelpExampleCli("walletpassphrase", "\"my pass phrase\" 120") +
             "\nPerform a send (requires passphrase set)\n" +
             HelpExampleCli("sendtoaddress",
                            "\"1M72Sfpbz1BPpXFHz9m3CdqATR44Jvaydd\" 1.0") +
             "\nClear the passphrase since we are done before 2 minutes is "
             "up\n" +
             HelpExampleCli("walletlock", "") + "\nAs a JSON-RPC call\n" +
             HelpExampleRpc("walletlock", "")},
     }
         .Check(request);
 
     LOCK(pwallet->cs_wallet);
 
     if (!pwallet->IsCrypted()) {
         throw JSONRPCError(RPC_WALLET_WRONG_ENC_STATE,
                            "Error: running with an unencrypted wallet, but "
                            "walletlock was called.");
     }
 
     pwallet->Lock();
     pwallet->nRelockTime = 0;
 
     return NullUniValue;
 }
 
 static UniValue encryptwallet(const Config &config,
                               const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "encryptwallet",
         "Encrypts the wallet with 'passphrase'. This is for first time "
         "encryption.\n"
         "After this, any calls that interact with private keys such as sending "
         "or signing \n"
         "will require the passphrase to be set prior the making these calls.\n"
         "Use the walletpassphrase call for this, and then walletlock call.\n"
         "If the wallet is already encrypted, use the walletpassphrasechange "
         "call.\n",
         {
             {"passphrase", RPCArg::Type::STR, RPCArg::Optional::NO,
              "The pass phrase to encrypt the wallet with. It must be at least "
              "1 character, but should be long."},
         },
         RPCResults{},
         RPCExamples{
             "\nEncrypt your wallet\n" +
             HelpExampleCli("encryptwallet", "\"my pass phrase\"") +
             "\nNow set the passphrase to use the wallet, such as for signing "
             "or sending bitcoin\n" +
             HelpExampleCli("walletpassphrase", "\"my pass phrase\"") +
             "\nNow we can do something like sign\n" +
             HelpExampleCli("signmessage", "\"address\" \"test message\"") +
             "\nNow lock the wallet again by removing the passphrase\n" +
             HelpExampleCli("walletlock", "") + "\nAs a JSON-RPC call\n" +
             HelpExampleRpc("encryptwallet", "\"my pass phrase\"")},
     }
         .Check(request);
 
     LOCK(pwallet->cs_wallet);
 
     if (pwallet->IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS)) {
         throw JSONRPCError(
             RPC_WALLET_ENCRYPTION_FAILED,
             "Error: wallet does not contain private keys, nothing to encrypt.");
     }
 
     if (pwallet->IsCrypted()) {
         throw JSONRPCError(RPC_WALLET_WRONG_ENC_STATE,
                            "Error: running with an encrypted wallet, but "
                            "encryptwallet was called.");
     }
 
     // TODO: get rid of this .c_str() by implementing
     // SecureString::operator=(std::string)
     // Alternately, find a way to make request.params[0] mlock()'d to begin
     // with.
     SecureString strWalletPass;
     strWalletPass.reserve(100);
     strWalletPass = request.params[0].get_str().c_str();
 
     if (strWalletPass.empty()) {
         throw JSONRPCError(RPC_INVALID_PARAMETER,
                            "passphrase can not be empty");
     }
 
     if (!pwallet->EncryptWallet(strWalletPass)) {
         throw JSONRPCError(RPC_WALLET_ENCRYPTION_FAILED,
                            "Error: Failed to encrypt the wallet.");
     }
 
     return "wallet encrypted; The keypool has been flushed and a new HD seed "
            "was generated (if you are using HD). You need to make a new "
            "backup.";
 }
 
 static UniValue lockunspent(const Config &config,
                             const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "lockunspent",
         "Updates list of temporarily unspendable outputs.\n"
         "Temporarily lock (unlock=false) or unlock (unlock=true) specified "
         "transaction outputs.\n"
         "If no transaction outputs are specified when unlocking then all "
         "current locked transaction outputs are unlocked.\n"
         "A locked transaction output will not be chosen by automatic coin "
         "selection, when spending bitcoins.\n"
         "Locks are stored in memory only. Nodes start with zero locked "
         "outputs, and the locked output list\n"
         "is always cleared (by virtue of process exit) when a node stops or "
         "fails.\n"
         "Also see the listunspent call\n",
         {
             {"unlock", RPCArg::Type::BOOL, RPCArg::Optional::NO,
              "Whether to unlock (true) or lock (false) the specified "
              "transactions"},
             {
                 "transactions",
                 RPCArg::Type::ARR,
                 /* default */ "empty array",
                 "A json array of objects. Each object the txid (string) vout "
                 "(numeric).",
                 {
                     {
                         "",
                         RPCArg::Type::OBJ,
                         RPCArg::Optional::OMITTED,
                         "",
                         {
                             {"txid", RPCArg::Type::STR_HEX,
                              RPCArg::Optional::NO, "The transaction id"},
                             {"vout", RPCArg::Type::NUM, RPCArg::Optional::NO,
                              "The output number"},
                         },
                     },
                 },
             },
         },
         RPCResult{RPCResult::Type::BOOL, "",
                   "Whether the command was successful or not"},
         RPCExamples{
             "\nList the unspent transactions\n" +
             HelpExampleCli("listunspent", "") +
             "\nLock an unspent transaction\n" +
             HelpExampleCli("lockunspent", "false "
                                           "\"[{\\\"txid\\\":"
                                           "\\\"a08e6907dbbd3d809776dbfc5d82e371"
                                           "b764ed838b5655e72f463568df1aadf0\\\""
                                           ",\\\"vout\\\":1}]\"") +
             "\nList the locked transactions\n" +
             HelpExampleCli("listlockunspent", "") +
             "\nUnlock the transaction again\n" +
             HelpExampleCli("lockunspent", "true "
                                           "\"[{\\\"txid\\\":"
                                           "\\\"a08e6907dbbd3d809776dbfc5d82e371"
                                           "b764ed838b5655e72f463568df1aadf0\\\""
                                           ",\\\"vout\\\":1}]\"") +
             "\nAs a JSON-RPC call\n" +
             HelpExampleRpc("lockunspent", "false, "
                                           "\"[{\\\"txid\\\":"
                                           "\\\"a08e6907dbbd3d809776dbfc5d82e371"
                                           "b764ed838b5655e72f463568df1aadf0\\\""
                                           ",\\\"vout\\\":1}]\"")},
     }
         .Check(request);
 
     // Make sure the results are valid at least up to the most recent block
     // the user could have gotten from another RPC command prior to now
     pwallet->BlockUntilSyncedToCurrentChain();
 
     LOCK(pwallet->cs_wallet);
 
     RPCTypeCheckArgument(request.params[0], UniValue::VBOOL);
 
     bool fUnlock = request.params[0].get_bool();
 
     if (request.params[1].isNull()) {
         if (fUnlock) {
             pwallet->UnlockAllCoins();
         }
         return true;
     }
 
     RPCTypeCheckArgument(request.params[1], UniValue::VARR);
 
     const UniValue &output_params = request.params[1];
 
     // Create and validate the COutPoints first.
 
     std::vector<COutPoint> outputs;
     outputs.reserve(output_params.size());
 
     for (size_t idx = 0; idx < output_params.size(); idx++) {
         const UniValue &o = output_params[idx].get_obj();
 
         RPCTypeCheckObj(o, {
                                {"txid", UniValueType(UniValue::VSTR)},
                                {"vout", UniValueType(UniValue::VNUM)},
                            });
 
         const int nOutput = find_value(o, "vout").get_int();
         if (nOutput < 0) {
             throw JSONRPCError(RPC_INVALID_PARAMETER,
                                "Invalid parameter, vout must be positive");
         }
 
         const TxId txid(ParseHashO(o, "txid"));
         const auto it = pwallet->mapWallet.find(txid);
         if (it == pwallet->mapWallet.end()) {
             throw JSONRPCError(RPC_INVALID_PARAMETER,
                                "Invalid parameter, unknown transaction");
         }
 
         const COutPoint output(txid, nOutput);
         const CWalletTx &trans = it->second;
         if (output.GetN() >= trans.tx->vout.size()) {
             throw JSONRPCError(RPC_INVALID_PARAMETER,
                                "Invalid parameter, vout index out of bounds");
         }
 
         if (pwallet->IsSpent(output)) {
             throw JSONRPCError(RPC_INVALID_PARAMETER,
                                "Invalid parameter, expected unspent output");
         }
 
         const bool is_locked = pwallet->IsLockedCoin(output);
         if (fUnlock && !is_locked) {
             throw JSONRPCError(RPC_INVALID_PARAMETER,
                                "Invalid parameter, expected locked output");
         }
 
         if (!fUnlock && is_locked) {
             throw JSONRPCError(RPC_INVALID_PARAMETER,
                                "Invalid parameter, output already locked");
         }
 
         outputs.push_back(output);
     }
 
     // Atomically set (un)locked status for the outputs.
     for (const COutPoint &output : outputs) {
         if (fUnlock) {
             pwallet->UnlockCoin(output);
         } else {
             pwallet->LockCoin(output);
         }
     }
 
     return true;
 }
 
 static UniValue listlockunspent(const Config &config,
                                 const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     const CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "listlockunspent",
         "Returns list of temporarily unspendable outputs.\n"
         "See the lockunspent call to lock and unlock transactions for "
         "spending.\n",
         {},
         RPCResult{RPCResult::Type::ARR,
                   "",
                   "",
                   {
                       {RPCResult::Type::OBJ,
                        "",
                        "",
                        {
                            {RPCResult::Type::STR_HEX, "txid",
                             "The transaction id locked"},
                            {RPCResult::Type::NUM, "vout", "The vout value"},
                        }},
                   }},
         RPCExamples{
             "\nList the unspent transactions\n" +
             HelpExampleCli("listunspent", "") +
             "\nLock an unspent transaction\n" +
             HelpExampleCli("lockunspent", "false "
                                           "\"[{\\\"txid\\\":"
                                           "\\\"a08e6907dbbd3d809776dbfc5d82e371"
                                           "b764ed838b5655e72f463568df1aadf0\\\""
                                           ",\\\"vout\\\":1}]\"") +
             "\nList the locked transactions\n" +
             HelpExampleCli("listlockunspent", "") +
             "\nUnlock the transaction again\n" +
             HelpExampleCli("lockunspent", "true "
                                           "\"[{\\\"txid\\\":"
                                           "\\\"a08e6907dbbd3d809776dbfc5d82e371"
                                           "b764ed838b5655e72f463568df1aadf0\\\""
                                           ",\\\"vout\\\":1}]\"") +
             "\nAs a JSON-RPC call\n" + HelpExampleRpc("listlockunspent", "")},
     }
         .Check(request);
 
     LOCK(pwallet->cs_wallet);
 
     std::vector<COutPoint> vOutpts;
     pwallet->ListLockedCoins(vOutpts);
 
     UniValue ret(UniValue::VARR);
 
     for (const COutPoint &output : vOutpts) {
         UniValue o(UniValue::VOBJ);
 
         o.pushKV("txid", output.GetTxId().GetHex());
         o.pushKV("vout", int(output.GetN()));
         ret.push_back(o);
     }
 
     return ret;
 }
 
 static UniValue settxfee(const Config &config, const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "settxfee",
         "Set the transaction fee per kB for this wallet. Overrides the "
         "global -paytxfee command line parameter.\n",
         {
             {"amount", RPCArg::Type::AMOUNT, RPCArg::Optional::NO,
              "The transaction fee in " + CURRENCY_UNIT + "/kB"},
         },
         RPCResult{RPCResult::Type::BOOL, "", "Returns true if successful"},
         RPCExamples{HelpExampleCli("settxfee", "0.00001") +
                     HelpExampleRpc("settxfee", "0.00001")},
     }
         .Check(request);
 
     LOCK(pwallet->cs_wallet);
 
     Amount nAmount = AmountFromValue(request.params[0]);
     CFeeRate tx_fee_rate(nAmount, 1000);
     if (tx_fee_rate == CFeeRate()) {
         // automatic selection
     } else if (tx_fee_rate < pwallet->chain().relayMinFee()) {
         throw JSONRPCError(
             RPC_INVALID_PARAMETER,
             strprintf("txfee cannot be less than min relay tx fee (%s)",
                       pwallet->chain().relayMinFee().ToString()));
     } else if (tx_fee_rate < pwallet->m_min_fee) {
         throw JSONRPCError(
             RPC_INVALID_PARAMETER,
             strprintf("txfee cannot be less than wallet min fee (%s)",
                       pwallet->m_min_fee.ToString()));
     }
 
     pwallet->m_pay_tx_fee = tx_fee_rate;
     return true;
 }
 
 static UniValue getbalances(const Config &config,
                             const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const rpc_wallet =
         GetWalletForJSONRPCRequest(request);
     if (!EnsureWalletIsAvailable(rpc_wallet.get(), request.fHelp)) {
         return NullUniValue;
     }
     CWallet &wallet = *rpc_wallet;
 
     RPCHelpMan{
         "getbalances",
         "Returns an object with all balances in " + CURRENCY_UNIT + ".\n",
         {},
         RPCResult{RPCResult::Type::OBJ,
                   "",
                   "",
                   {
                       {RPCResult::Type::OBJ,
                        "mine",
                        "balances from outputs that the wallet can sign",
                        {
                            {RPCResult::Type::STR_AMOUNT, "trusted",
                             "trusted balance (outputs created by the wallet or "
                             "confirmed outputs)"},
                            {RPCResult::Type::STR_AMOUNT, "untrusted_pending",
                             "untrusted pending balance (outputs created by "
                             "others that are in the mempool)"},
                            {RPCResult::Type::STR_AMOUNT, "immature",
                             "balance from immature coinbase outputs"},
                            {RPCResult::Type::STR_AMOUNT, "used",
                             "(only present if avoid_reuse is set) balance from "
                             "coins sent to addresses that were previously "
                             "spent from (potentially privacy violating)"},
                        }},
                       {RPCResult::Type::OBJ,
                        "watchonly",
                        "watchonly balances (not present if wallet does not "
                        "watch anything)",
                        {
                            {RPCResult::Type::STR_AMOUNT, "trusted",
                             "trusted balance (outputs created by the wallet or "
                             "confirmed outputs)"},
                            {RPCResult::Type::STR_AMOUNT, "untrusted_pending",
                             "untrusted pending balance (outputs created by "
                             "others that are in the mempool)"},
                            {RPCResult::Type::STR_AMOUNT, "immature",
                             "balance from immature coinbase outputs"},
                        }},
                   }},
         RPCExamples{HelpExampleCli("getbalances", "") +
                     HelpExampleRpc("getbalances", "")},
     }
         .Check(request);
 
     // Make sure the results are valid at least up to the most recent block
     // the user could have gotten from another RPC command prior to now
     wallet.BlockUntilSyncedToCurrentChain();
 
     LOCK(wallet.cs_wallet);
 
     UniValue obj(UniValue::VOBJ);
 
     const auto bal = wallet.GetBalance();
     UniValue balances{UniValue::VOBJ};
     {
         UniValue balances_mine{UniValue::VOBJ};
         balances_mine.pushKV("trusted", ValueFromAmount(bal.m_mine_trusted));
         balances_mine.pushKV("untrusted_pending",
                              ValueFromAmount(bal.m_mine_untrusted_pending));
         balances_mine.pushKV("immature", ValueFromAmount(bal.m_mine_immature));
         if (wallet.IsWalletFlagSet(WALLET_FLAG_AVOID_REUSE)) {
             // If the AVOID_REUSE flag is set, bal has been set to just the
             // un-reused address balance. Get the total balance, and then
             // subtract bal to get the reused address balance.
             const auto full_bal = wallet.GetBalance(0, false);
             balances_mine.pushKV(
                 "used", ValueFromAmount(full_bal.m_mine_trusted +
                                         full_bal.m_mine_untrusted_pending -
                                         bal.m_mine_trusted -
                                         bal.m_mine_untrusted_pending));
         }
         balances.pushKV("mine", balances_mine);
     }
     auto spk_man = wallet.GetLegacyScriptPubKeyMan();
     if (spk_man && spk_man->HaveWatchOnly()) {
         UniValue balances_watchonly{UniValue::VOBJ};
         balances_watchonly.pushKV("trusted",
                                   ValueFromAmount(bal.m_watchonly_trusted));
         balances_watchonly.pushKV(
             "untrusted_pending",
             ValueFromAmount(bal.m_watchonly_untrusted_pending));
         balances_watchonly.pushKV("immature",
                                   ValueFromAmount(bal.m_watchonly_immature));
         balances.pushKV("watchonly", balances_watchonly);
     }
     return balances;
 }
 
 static UniValue getwalletinfo(const Config &config,
                               const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     const CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "getwalletinfo",
         "Returns an object containing various wallet state info.\n",
         {},
         RPCResult{
             RPCResult::Type::OBJ,
             "",
             "",
             {{
                 {RPCResult::Type::STR, "walletname", "the wallet name"},
                 {RPCResult::Type::NUM, "walletversion", "the wallet version"},
                 {RPCResult::Type::STR_AMOUNT, "balance",
                  "DEPRECATED. Identical to getbalances().mine.trusted"},
                 {RPCResult::Type::STR_AMOUNT, "unconfirmed_balance",
                  "DEPRECATED. Identical to "
                  "getbalances().mine.untrusted_pending"},
                 {RPCResult::Type::STR_AMOUNT, "immature_balance",
                  "DEPRECATED. Identical to getbalances().mine.immature"},
                 {RPCResult::Type::NUM, "txcount",
                  "the total number of transactions in the wallet"},
                 {RPCResult::Type::NUM_TIME, "keypoololdest",
                  "the " + UNIX_EPOCH_TIME +
                      " of the oldest pre-generated key in the key pool. Legacy "
                      "wallets only."},
                 {RPCResult::Type::NUM, "keypoolsize",
                  "how many new keys are pre-generated (only counts external "
                  "keys)"},
                 {RPCResult::Type::NUM, "keypoolsize_hd_internal",
                  "how many new keys are pre-generated for internal use (used "
                  "for change outputs, only appears if the wallet is using this "
                  "feature, otherwise external keys are used)"},
                 {RPCResult::Type::NUM_TIME, "unlocked_until",
                  "the " + UNIX_EPOCH_TIME +
                      " until which the wallet is unlocked for transfers, or 0 "
                      "if the wallet is locked"},
                 {RPCResult::Type::STR_AMOUNT, "paytxfee",
                  "the transaction fee configuration, set in " + CURRENCY_UNIT +
                      "/kB"},
                 {RPCResult::Type::STR_HEX, "hdseedid", /* optional */ true,
                  "the Hash160 of the HD seed (only present when HD is "
                  "enabled)"},
                 {RPCResult::Type::BOOL, "private_keys_enabled",
                  "false if privatekeys are disabled for this wallet (enforced "
                  "watch-only wallet)"},
                 {RPCResult::Type::OBJ,
                  "scanning",
                  "current scanning details, or false if no scan is in progress",
                  {
                      {RPCResult::Type::NUM, "duration",
                       "elapsed seconds since scan start"},
                      {RPCResult::Type::NUM, "progress",
                       "scanning progress percentage [0.0, 1.0]"},
                  }},
                 {RPCResult::Type::BOOL, "avoid_reuse",
                  "whether this wallet tracks clean/dirty coins in terms of "
                  "reuse"},
                 {RPCResult::Type::BOOL, "descriptors",
                  "whether this wallet uses descriptors for scriptPubKey "
                  "management"},
             }},
         },
         RPCExamples{HelpExampleCli("getwalletinfo", "") +
                     HelpExampleRpc("getwalletinfo", "")},
     }
         .Check(request);
 
     // Make sure the results are valid at least up to the most recent block
     // the user could have gotten from another RPC command prior to now
     pwallet->BlockUntilSyncedToCurrentChain();
 
     LOCK(pwallet->cs_wallet);
 
     UniValue obj(UniValue::VOBJ);
 
     size_t kpExternalSize = pwallet->KeypoolCountExternalKeys();
     const auto bal = pwallet->GetBalance();
     int64_t kp_oldest = pwallet->GetOldestKeyPoolTime();
     obj.pushKV("walletname", pwallet->GetName());
     obj.pushKV("walletversion", pwallet->GetVersion());
     obj.pushKV("balance", ValueFromAmount(bal.m_mine_trusted));
     obj.pushKV("unconfirmed_balance",
                ValueFromAmount(bal.m_mine_untrusted_pending));
     obj.pushKV("immature_balance", ValueFromAmount(bal.m_mine_immature));
     obj.pushKV("txcount", (int)pwallet->mapWallet.size());
     if (kp_oldest > 0) {
         obj.pushKV("keypoololdest", kp_oldest);
     }
     obj.pushKV("keypoolsize", (int64_t)kpExternalSize);
 
     LegacyScriptPubKeyMan *spk_man = pwallet->GetLegacyScriptPubKeyMan();
     if (spk_man) {
         CKeyID seed_id = spk_man->GetHDChain().seed_id;
         if (!seed_id.IsNull()) {
             obj.pushKV("hdseedid", seed_id.GetHex());
         }
     }
 
     if (pwallet->CanSupportFeature(FEATURE_HD_SPLIT)) {
         obj.pushKV("keypoolsize_hd_internal",
                    int64_t(pwallet->GetKeyPoolSize() - kpExternalSize));
     }
     if (pwallet->IsCrypted()) {
         obj.pushKV("unlocked_until", pwallet->nRelockTime);
     }
     obj.pushKV("paytxfee", ValueFromAmount(pwallet->m_pay_tx_fee.GetFeePerK()));
     obj.pushKV("private_keys_enabled",
                !pwallet->IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS));
     if (pwallet->IsScanning()) {
         UniValue scanning(UniValue::VOBJ);
         scanning.pushKV("duration", pwallet->ScanningDuration() / 1000);
         scanning.pushKV("progress", pwallet->ScanningProgress());
         obj.pushKV("scanning", scanning);
     } else {
         obj.pushKV("scanning", false);
     }
     obj.pushKV("avoid_reuse",
                pwallet->IsWalletFlagSet(WALLET_FLAG_AVOID_REUSE));
     obj.pushKV("descriptors",
                pwallet->IsWalletFlagSet(WALLET_FLAG_DESCRIPTORS));
     return obj;
 }
 
 static UniValue listwalletdir(const Config &config,
                               const JSONRPCRequest &request) {
     RPCHelpMan{
         "listwalletdir",
         "Returns a list of wallets in the wallet directory.\n",
         {},
         RPCResult{
             RPCResult::Type::OBJ,
             "",
             "",
             {
                 {RPCResult::Type::ARR,
                  "wallets",
                  "",
                  {
                      {RPCResult::Type::OBJ,
                       "",
                       "",
                       {
                           {RPCResult::Type::STR, "name", "The wallet name"},
                       }},
                  }},
             }},
         RPCExamples{HelpExampleCli("listwalletdir", "") +
                     HelpExampleRpc("listwalletdir", "")},
     }
         .Check(request);
 
     UniValue wallets(UniValue::VARR);
     for (const auto &path : ListWalletDir()) {
         UniValue wallet(UniValue::VOBJ);
         wallet.pushKV("name", path.string());
         wallets.push_back(wallet);
     }
 
     UniValue result(UniValue::VOBJ);
     result.pushKV("wallets", wallets);
     return result;
 }
 
 static UniValue listwallets(const Config &config,
                             const JSONRPCRequest &request) {
     RPCHelpMan{
         "listwallets",
         "Returns a list of currently loaded wallets.\n"
         "For full information on the wallet, use \"getwalletinfo\"\n",
         {},
         RPCResult{RPCResult::Type::ARR,
                   "",
                   "",
                   {
                       {RPCResult::Type::STR, "walletname", "the wallet name"},
                   }},
         RPCExamples{HelpExampleCli("listwallets", "") +
                     HelpExampleRpc("listwallets", "")},
     }
         .Check(request);
 
     UniValue obj(UniValue::VARR);
 
     for (const std::shared_ptr<CWallet> &wallet : GetWallets()) {
         if (!EnsureWalletIsAvailable(wallet.get(), request.fHelp)) {
             return NullUniValue;
         }
 
         LOCK(wallet->cs_wallet);
 
         obj.push_back(wallet->GetName());
     }
 
     return obj;
 }
 
 static UniValue loadwallet(const Config &config,
                            const JSONRPCRequest &request) {
     RPCHelpMan{
         "loadwallet",
         "Loads a wallet from a wallet file or directory."
         "\nNote that all wallet command-line options used when starting "
         "bitcoind will be"
         "\napplied to the new wallet (eg -zapwallettxes, rescan, etc).\n",
         {
             {"filename", RPCArg::Type::STR, RPCArg::Optional::NO,
              "The wallet directory or .dat file."},
         },
         RPCResult{RPCResult::Type::OBJ,
                   "",
                   "",
                   {
                       {RPCResult::Type::STR, "name",
                        "The wallet name if loaded successfully."},
                       {RPCResult::Type::STR, "warning",
                        "Warning message if wallet was not loaded cleanly."},
                   }},
         RPCExamples{HelpExampleCli("loadwallet", "\"test.dat\"") +
                     HelpExampleRpc("loadwallet", "\"test.dat\"")},
     }
         .Check(request);
 
     const CChainParams &chainParams = config.GetChainParams();
 
+    WalletContext &context = EnsureWalletContext(request.context);
     WalletLocation location(request.params[0].get_str());
 
     if (!location.Exists()) {
         throw JSONRPCError(RPC_WALLET_NOT_FOUND,
                            "Wallet " + location.GetName() + " not found.");
     } else if (fs::is_directory(location.GetPath())) {
         // The given filename is a directory. Check that there's a wallet.dat
         // file.
         fs::path wallet_dat_file = location.GetPath() / "wallet.dat";
         if (fs::symlink_status(wallet_dat_file).type() == fs::file_not_found) {
             throw JSONRPCError(RPC_WALLET_NOT_FOUND,
                                "Directory " + location.GetName() +
                                    " does not contain a wallet.dat file.");
         }
     }
 
     bilingual_str error;
     std::vector<bilingual_str> warnings;
     std::shared_ptr<CWallet> const wallet =
-        LoadWallet(chainParams, *g_rpc_chain, location, error, warnings);
+        LoadWallet(chainParams, *context.chain, location, error, warnings);
     if (!wallet) {
         throw JSONRPCError(RPC_WALLET_ERROR, error.original);
     }
 
     UniValue obj(UniValue::VOBJ);
     obj.pushKV("name", wallet->GetName());
     obj.pushKV("warning", Join(warnings, "\n", OpOriginal));
 
     return obj;
 }
 
 static UniValue setwalletflag(const Config &config,
                               const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     std::string flags = "";
     for (auto &it : WALLET_FLAG_MAP) {
         if (it.second & MUTABLE_WALLET_FLAGS) {
             flags += (flags == "" ? "" : ", ") + it.first;
         }
     }
     RPCHelpMan{
         "setwalletflag",
         "Change the state of the given wallet flag for a wallet.\n",
         {
             {"flag", RPCArg::Type::STR, RPCArg::Optional::NO,
              "The name of the flag to change. Current available flags: " +
                  flags},
             {"value", RPCArg::Type::BOOL, /* default */ "true",
              "The new state."},
         },
         RPCResult{RPCResult::Type::OBJ,
                   "",
                   "",
                   {
                       {RPCResult::Type::STR, "flag_name",
                        "The name of the flag that was modified"},
                       {RPCResult::Type::BOOL, "flag_state",
                        "The new state of the flag"},
                       {RPCResult::Type::STR, "warnings",
                        "Any warnings associated with the change"},
                   }},
         RPCExamples{HelpExampleCli("setwalletflag", "avoid_reuse") +
                     HelpExampleRpc("setwalletflag", "\"avoid_reuse\"")},
     }
         .Check(request);
 
     std::string flag_str = request.params[0].get_str();
     bool value = request.params[1].isNull() || request.params[1].get_bool();
 
     if (!WALLET_FLAG_MAP.count(flag_str)) {
         throw JSONRPCError(RPC_INVALID_PARAMETER,
                            strprintf("Unknown wallet flag: %s", flag_str));
     }
 
     auto flag = WALLET_FLAG_MAP.at(flag_str);
 
     if (!(flag & MUTABLE_WALLET_FLAGS)) {
         throw JSONRPCError(RPC_INVALID_PARAMETER,
                            strprintf("Wallet flag is immutable: %s", flag_str));
     }
 
     UniValue res(UniValue::VOBJ);
 
     if (pwallet->IsWalletFlagSet(flag) == value) {
         throw JSONRPCError(RPC_INVALID_PARAMETER,
                            strprintf("Wallet flag is already set to %s: %s",
                                      value ? "true" : "false", flag_str));
     }
 
     res.pushKV("flag_name", flag_str);
     res.pushKV("flag_state", value);
 
     if (value) {
         pwallet->SetWalletFlag(flag);
     } else {
         pwallet->UnsetWalletFlag(flag);
     }
 
     if (flag && value && WALLET_FLAG_CAVEATS.count(flag)) {
         res.pushKV("warnings", WALLET_FLAG_CAVEATS.at(flag));
     }
 
     return res;
 }
 
 static UniValue createwallet(const Config &config,
                              const JSONRPCRequest &request) {
     RPCHelpMan{
         "createwallet",
         "Creates and loads a new wallet.\n",
         {
             {"wallet_name", RPCArg::Type::STR, RPCArg::Optional::NO,
              "The name for the new wallet. If this is a path, the wallet will "
              "be created at the path location."},
             {"disable_private_keys", RPCArg::Type::BOOL, /* default */ "false",
              "Disable the possibility of private keys (only watchonlys are "
              "possible in this mode)."},
             {"blank", RPCArg::Type::BOOL, /* default */ "false",
              "Create a blank wallet. A blank wallet has no keys or HD seed. "
              "One can be set using sethdseed."},
             {"passphrase", RPCArg::Type::STR, RPCArg::Optional::OMITTED,
              "Encrypt the wallet with this passphrase."},
             {"avoid_reuse", RPCArg::Type::BOOL, /* default */ "false",
              "Keep track of coin reuse, and treat dirty and clean coins "
              "differently with privacy considerations in mind."},
             {"descriptors", RPCArg::Type::BOOL, /* default */ "false",
              "Create a native descriptor wallet. The wallet will use "
              "descriptors internally to handle address creation"},
         },
         RPCResult{RPCResult::Type::OBJ,
                   "",
                   "",
                   {
                       {RPCResult::Type::STR, "name",
                        "The wallet name if created successfully. If the wallet "
                        "was created using a full path, the wallet_name will be "
                        "the full path."},
                       {RPCResult::Type::STR, "warning",
                        "Warning message if wallet was not loaded cleanly."},
                   }},
         RPCExamples{HelpExampleCli("createwallet", "\"testwallet\"") +
                     HelpExampleRpc("createwallet", "\"testwallet\"")},
     }
         .Check(request);
 
+    WalletContext &context = EnsureWalletContext(request.context);
     uint64_t flags = 0;
     if (!request.params[1].isNull() && request.params[1].get_bool()) {
         flags |= WALLET_FLAG_DISABLE_PRIVATE_KEYS;
     }
 
     if (!request.params[2].isNull() && request.params[2].get_bool()) {
         flags |= WALLET_FLAG_BLANK_WALLET;
     }
 
     SecureString passphrase;
     passphrase.reserve(100);
     std::vector<bilingual_str> warnings;
     if (!request.params[3].isNull()) {
         passphrase = request.params[3].get_str().c_str();
         if (passphrase.empty()) {
             // Empty string means unencrypted
             warnings.emplace_back(
                 Untranslated("Empty string given as passphrase, wallet will "
                              "not be encrypted."));
         }
     }
 
     if (!request.params[4].isNull() && request.params[4].get_bool()) {
         flags |= WALLET_FLAG_AVOID_REUSE;
     }
     if (!request.params[5].isNull() && request.params[5].get_bool()) {
         flags |= WALLET_FLAG_DESCRIPTORS;
     }
 
     bilingual_str error;
     std::shared_ptr<CWallet> wallet;
     WalletCreationStatus status =
-        CreateWallet(config.GetChainParams(), *g_rpc_chain, passphrase, flags,
+        CreateWallet(config.GetChainParams(), *context.chain, passphrase, flags,
                      request.params[0].get_str(), error, warnings, wallet);
     switch (status) {
         case WalletCreationStatus::CREATION_FAILED:
             throw JSONRPCError(RPC_WALLET_ERROR, error.original);
         case WalletCreationStatus::ENCRYPTION_FAILED:
             throw JSONRPCError(RPC_WALLET_ENCRYPTION_FAILED, error.original);
         case WalletCreationStatus::SUCCESS:
             break;
             // no default case, so the compiler can warn about missing cases
     }
 
     UniValue obj(UniValue::VOBJ);
     obj.pushKV("name", wallet->GetName());
     obj.pushKV("warning", Join(warnings, "\n", OpOriginal));
 
     return obj;
 }
 
 static UniValue unloadwallet(const Config &config,
                              const JSONRPCRequest &request) {
     RPCHelpMan{
         "unloadwallet",
         "Unloads the wallet referenced by the request endpoint otherwise "
         "unloads the wallet specified in the argument.\n"
         "Specifying the wallet name on a wallet endpoint is invalid.",
         {
             {"wallet_name", RPCArg::Type::STR,
              /* default */ "the wallet name from the RPC request",
              "The name of the wallet to unload."},
         },
         RPCResults{},
         RPCExamples{HelpExampleCli("unloadwallet", "wallet_name") +
                     HelpExampleRpc("unloadwallet", "wallet_name")},
     }
         .Check(request);
 
     std::string wallet_name;
     if (GetWalletNameFromJSONRPCRequest(request, wallet_name)) {
         if (!request.params[0].isNull()) {
             throw JSONRPCError(RPC_INVALID_PARAMETER,
                                "Cannot unload the requested wallet");
         }
     } else {
         wallet_name = request.params[0].get_str();
     }
 
     std::shared_ptr<CWallet> wallet = GetWallet(wallet_name);
     if (!wallet) {
         throw JSONRPCError(RPC_WALLET_NOT_FOUND,
                            "Requested wallet does not exist or is not loaded");
     }
 
     // Release the "main" shared pointer and prevent further notifications.
     // Note that any attempt to load the same wallet would fail until the wallet
     // is destroyed (see CheckUniqueFileid).
     if (!RemoveWallet(wallet)) {
         throw JSONRPCError(RPC_MISC_ERROR, "Requested wallet already unloaded");
     }
 
     UnloadWallet(std::move(wallet));
 
     return NullUniValue;
 }
 
 static UniValue listunspent(const Config &config,
                             const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     const CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "listunspent",
         "Returns array of unspent transaction outputs\n"
         "with between minconf and maxconf (inclusive) confirmations.\n"
         "Optionally filter to only include txouts paid to specified "
         "addresses.\n",
         {
             {"minconf", RPCArg::Type::NUM, /* default */ "1",
              "The minimum confirmations to filter"},
             {"maxconf", RPCArg::Type::NUM, /* default */ "9999999",
              "The maximum confirmations to filter"},
             {
                 "addresses",
                 RPCArg::Type::ARR,
                 /* default */ "empty array",
                 "A json array of bitcoin addresses to filter",
                 {
                     {"address", RPCArg::Type::STR, RPCArg::Optional::OMITTED,
                      "bitcoin address"},
                 },
             },
             {"include_unsafe", RPCArg::Type::BOOL, /* default */ "true",
              "Include outputs that are not safe to spend\n"
              "                  See description of \"safe\" attribute below."},
             {"query_options",
              RPCArg::Type::OBJ,
              RPCArg::Optional::OMITTED_NAMED_ARG,
              "JSON with query options",
              {
                  {"minimumAmount", RPCArg::Type::AMOUNT, /* default */ "0",
                   "Minimum value of each UTXO in " + CURRENCY_UNIT + ""},
                  {"maximumAmount", RPCArg::Type::AMOUNT,
                   /* default */ "unlimited",
                   "Maximum value of each UTXO in " + CURRENCY_UNIT + ""},
                  {"maximumCount", RPCArg::Type::NUM, /* default */ "unlimited",
                   "Maximum number of UTXOs"},
                  {"minimumSumAmount", RPCArg::Type::AMOUNT,
                   /* default */ "unlimited",
                   "Minimum sum value of all UTXOs in " + CURRENCY_UNIT + ""},
              },
              "query_options"},
         },
         RPCResult{
             RPCResult::Type::ARR,
             "",
             "",
             {
                 {RPCResult::Type::OBJ,
                  "",
                  "",
                  {
                      {RPCResult::Type::STR_HEX, "txid", "the transaction id"},
                      {RPCResult::Type::NUM, "vout", "the vout value"},
                      {RPCResult::Type::STR, "address", "the bitcoin address"},
                      {RPCResult::Type::STR, "label",
                       "The associated label, or \"\" for the default label"},
                      {RPCResult::Type::STR, "scriptPubKey", "the script key"},
                      {RPCResult::Type::STR_AMOUNT, "amount",
                       "the transaction output amount in " + CURRENCY_UNIT},
                      {RPCResult::Type::NUM, "confirmations",
                       "The number of confirmations"},
                      {RPCResult::Type::STR_HEX, "redeemScript",
                       "The redeemScript if scriptPubKey is P2SH"},
                      {RPCResult::Type::BOOL, "spendable",
                       "Whether we have the private keys to spend this output"},
                      {RPCResult::Type::BOOL, "solvable",
                       "Whether we know how to spend this output, ignoring the "
                       "lack of keys"},
                      {RPCResult::Type::BOOL, "reused",
                       "(only present if avoid_reuse is set) Whether this "
                       "output is reused/dirty (sent to an address that was "
                       "previously spent from)"},
                      {RPCResult::Type::STR, "desc",
                       "(only when solvable) A descriptor for spending this "
                       "output"},
                      {RPCResult::Type::BOOL, "safe",
                       "Whether this output is considered safe to spend. "
                       "Unconfirmed transactions\n"
                       "                              from outside keys and "
                       "unconfirmed replacement transactions are considered "
                       "unsafe\n"
                       "and are not eligible for spending by fundrawtransaction "
                       "and sendtoaddress."},
                  }},
             }},
         RPCExamples{
             HelpExampleCli("listunspent", "") +
             HelpExampleCli("listunspent",
                            "6 9999999 "
                            "\"[\\\"1PGFqEzfmQch1gKD3ra4k18PNj3tTUUSqg\\\","
                            "\\\"1LtvqCaApEdUGFkpKMM4MstjcaL4dKg8SP\\\"]\"") +
             HelpExampleRpc("listunspent",
                            "6, 9999999 "
                            "\"[\\\"1PGFqEzfmQch1gKD3ra4k18PNj3tTUUSqg\\\","
                            "\\\"1LtvqCaApEdUGFkpKMM4MstjcaL4dKg8SP\\\"]\"") +
             HelpExampleCli(
                 "listunspent",
                 "6 9999999 '[]' true '{ \"minimumAmount\": 0.005 }'") +
             HelpExampleRpc(
                 "listunspent",
                 "6, 9999999, [] , true, { \"minimumAmount\": 0.005 } ")},
     }
         .Check(request);
 
     int nMinDepth = 1;
     if (!request.params[0].isNull()) {
         RPCTypeCheckArgument(request.params[0], UniValue::VNUM);
         nMinDepth = request.params[0].get_int();
     }
 
     int nMaxDepth = 9999999;
     if (!request.params[1].isNull()) {
         RPCTypeCheckArgument(request.params[1], UniValue::VNUM);
         nMaxDepth = request.params[1].get_int();
     }
 
     std::set<CTxDestination> destinations;
     if (!request.params[2].isNull()) {
         RPCTypeCheckArgument(request.params[2], UniValue::VARR);
         UniValue inputs = request.params[2].get_array();
         for (size_t idx = 0; idx < inputs.size(); idx++) {
             const UniValue &input = inputs[idx];
             CTxDestination dest =
                 DecodeDestination(input.get_str(), wallet->chainParams);
             if (!IsValidDestination(dest)) {
                 throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY,
                                    std::string("Invalid Bitcoin address: ") +
                                        input.get_str());
             }
             if (!destinations.insert(dest).second) {
                 throw JSONRPCError(
                     RPC_INVALID_PARAMETER,
                     std::string("Invalid parameter, duplicated address: ") +
                         input.get_str());
             }
         }
     }
 
     bool include_unsafe = true;
     if (!request.params[3].isNull()) {
         RPCTypeCheckArgument(request.params[3], UniValue::VBOOL);
         include_unsafe = request.params[3].get_bool();
     }
 
     Amount nMinimumAmount = Amount::zero();
     Amount nMaximumAmount = MAX_MONEY;
     Amount nMinimumSumAmount = MAX_MONEY;
     uint64_t nMaximumCount = 0;
 
     if (!request.params[4].isNull()) {
         const UniValue &options = request.params[4].get_obj();
 
         if (options.exists("minimumAmount")) {
             nMinimumAmount = AmountFromValue(options["minimumAmount"]);
         }
 
         if (options.exists("maximumAmount")) {
             nMaximumAmount = AmountFromValue(options["maximumAmount"]);
         }
 
         if (options.exists("minimumSumAmount")) {
             nMinimumSumAmount = AmountFromValue(options["minimumSumAmount"]);
         }
 
         if (options.exists("maximumCount")) {
             nMaximumCount = options["maximumCount"].get_int64();
         }
     }
 
     // Make sure the results are valid at least up to the most recent block
     // the user could have gotten from another RPC command prior to now
     pwallet->BlockUntilSyncedToCurrentChain();
 
     UniValue results(UniValue::VARR);
     std::vector<COutput> vecOutputs;
     {
         CCoinControl cctl;
         cctl.m_avoid_address_reuse = false;
         cctl.m_min_depth = nMinDepth;
         cctl.m_max_depth = nMaxDepth;
         LOCK(pwallet->cs_wallet);
         pwallet->AvailableCoins(vecOutputs, !include_unsafe, &cctl,
                                 nMinimumAmount, nMaximumAmount,
                                 nMinimumSumAmount, nMaximumCount);
     }
 
     LOCK(pwallet->cs_wallet);
 
     const bool avoid_reuse = pwallet->IsWalletFlagSet(WALLET_FLAG_AVOID_REUSE);
 
     for (const COutput &out : vecOutputs) {
         CTxDestination address;
         const CScript &scriptPubKey = out.tx->tx->vout[out.i].scriptPubKey;
         bool fValidAddress = ExtractDestination(scriptPubKey, address);
         bool reused =
             avoid_reuse && pwallet->IsUsedDestination(out.tx->GetId(), out.i);
 
         if (destinations.size() &&
             (!fValidAddress || !destinations.count(address))) {
             continue;
         }
 
         UniValue entry(UniValue::VOBJ);
         entry.pushKV("txid", out.tx->GetId().GetHex());
         entry.pushKV("vout", out.i);
 
         if (fValidAddress) {
             entry.pushKV("address", EncodeDestination(address, config));
 
             const auto *address_book_entry =
                 pwallet->FindAddressBookEntry(address);
             if (address_book_entry) {
                 entry.pushKV("label", address_book_entry->GetLabel());
             }
 
             std::unique_ptr<SigningProvider> provider =
                 pwallet->GetSolvingProvider(scriptPubKey);
             if (provider) {
                 if (scriptPubKey.IsPayToScriptHash()) {
                     const CScriptID &hash =
                         CScriptID(boost::get<ScriptHash>(address));
                     CScript redeemScript;
                     if (provider->GetCScript(hash, redeemScript)) {
                         entry.pushKV(
                             "redeemScript",
                             HexStr(redeemScript.begin(), redeemScript.end()));
                     }
                 }
             }
         }
 
         entry.pushKV("scriptPubKey",
                      HexStr(scriptPubKey.begin(), scriptPubKey.end()));
         entry.pushKV("amount", ValueFromAmount(out.tx->tx->vout[out.i].nValue));
         entry.pushKV("confirmations", out.nDepth);
         entry.pushKV("spendable", out.fSpendable);
         entry.pushKV("solvable", out.fSolvable);
         if (out.fSolvable) {
             std::unique_ptr<SigningProvider> provider =
                 pwallet->GetSolvingProvider(scriptPubKey);
             if (provider) {
                 auto descriptor = InferDescriptor(scriptPubKey, *provider);
                 entry.pushKV("desc", descriptor->ToString());
             }
         }
         if (avoid_reuse) {
             entry.pushKV("reused", reused);
         }
         entry.pushKV("safe", out.fSafe);
         results.push_back(entry);
     }
 
     return results;
 }
 
 void FundTransaction(CWallet *const pwallet, CMutableTransaction &tx,
                      Amount &fee_out, int &change_position, UniValue options) {
     // Make sure the results are valid at least up to the most recent block
     // the user could have gotten from another RPC command prior to now
     pwallet->BlockUntilSyncedToCurrentChain();
 
     CCoinControl coinControl;
     change_position = -1;
     bool lockUnspents = false;
     UniValue subtractFeeFromOutputs;
     std::set<int> setSubtractFeeFromOutputs;
 
     if (!options.isNull()) {
         if (options.type() == UniValue::VBOOL) {
             // backward compatibility bool only fallback
             coinControl.fAllowWatchOnly = options.get_bool();
         } else {
             RPCTypeCheckArgument(options, UniValue::VOBJ);
             RPCTypeCheckObj(
                 options,
                 {
                     {"changeAddress", UniValueType(UniValue::VSTR)},
                     {"changePosition", UniValueType(UniValue::VNUM)},
                     {"includeWatching", UniValueType(UniValue::VBOOL)},
                     {"lockUnspents", UniValueType(UniValue::VBOOL)},
                     // will be checked below
                     {"feeRate", UniValueType()},
                     {"subtractFeeFromOutputs", UniValueType(UniValue::VARR)},
                 },
                 true, true);
 
             if (options.exists("changeAddress")) {
                 CTxDestination dest = DecodeDestination(
                     options["changeAddress"].get_str(), pwallet->chainParams);
 
                 if (!IsValidDestination(dest)) {
                     throw JSONRPCError(
                         RPC_INVALID_ADDRESS_OR_KEY,
                         "changeAddress must be a valid bitcoin address");
                 }
 
                 coinControl.destChange = dest;
             }
 
             if (options.exists("changePosition")) {
                 change_position = options["changePosition"].get_int();
             }
 
             coinControl.fAllowWatchOnly =
                 ParseIncludeWatchonly(options["includeWatching"], *pwallet);
 
             if (options.exists("lockUnspents")) {
                 lockUnspents = options["lockUnspents"].get_bool();
             }
 
             if (options.exists("feeRate")) {
                 coinControl.m_feerate =
                     CFeeRate(AmountFromValue(options["feeRate"]));
                 coinControl.fOverrideFeeRate = true;
             }
 
             if (options.exists("subtractFeeFromOutputs")) {
                 subtractFeeFromOutputs =
                     options["subtractFeeFromOutputs"].get_array();
             }
         }
     } else {
         // if options is null and not a bool
         coinControl.fAllowWatchOnly =
             ParseIncludeWatchonly(NullUniValue, *pwallet);
     }
 
     if (tx.vout.size() == 0) {
         throw JSONRPCError(RPC_INVALID_PARAMETER,
                            "TX must have at least one output");
     }
 
     if (change_position != -1 &&
         (change_position < 0 ||
          (unsigned int)change_position > tx.vout.size())) {
         throw JSONRPCError(RPC_INVALID_PARAMETER,
                            "changePosition out of bounds");
     }
 
     for (size_t idx = 0; idx < subtractFeeFromOutputs.size(); idx++) {
         int pos = subtractFeeFromOutputs[idx].get_int();
         if (setSubtractFeeFromOutputs.count(pos)) {
             throw JSONRPCError(
                 RPC_INVALID_PARAMETER,
                 strprintf("Invalid parameter, duplicated position: %d", pos));
         }
         if (pos < 0) {
             throw JSONRPCError(
                 RPC_INVALID_PARAMETER,
                 strprintf("Invalid parameter, negative position: %d", pos));
         }
         if (pos >= int(tx.vout.size())) {
             throw JSONRPCError(
                 RPC_INVALID_PARAMETER,
                 strprintf("Invalid parameter, position too large: %d", pos));
         }
         setSubtractFeeFromOutputs.insert(pos);
     }
 
     bilingual_str error;
 
     if (!pwallet->FundTransaction(tx, fee_out, change_position, error,
                                   lockUnspents, setSubtractFeeFromOutputs,
                                   coinControl)) {
         throw JSONRPCError(RPC_WALLET_ERROR, error.original);
     }
 }
 
 static UniValue fundrawtransaction(const Config &config,
                                    const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "fundrawtransaction",
         "Add inputs to a transaction until it has enough in value to meet "
         "its out value.\n"
         "This will not modify existing inputs, and will add at most one change "
         "output to the outputs.\n"
         "No existing outputs will be modified unless "
         "\"subtractFeeFromOutputs\" is specified.\n"
         "Note that inputs which were signed may need to be resigned after "
         "completion since in/outputs have been added.\n"
         "The inputs added will not be signed, use signrawtransactionwithkey or "
         "signrawtransactionwithwallet for that.\n"
         "Note that all existing inputs must have their previous output "
         "transaction be in the wallet.\n"
         "Note that all inputs selected must be of standard form and P2SH "
         "scripts must be\n"
         "in the wallet using importaddress or addmultisigaddress (to calculate "
         "fees).\n"
         "You can see whether this is the case by checking the \"solvable\" "
         "field in the listunspent output.\n"
         "Only pay-to-pubkey, multisig, and P2SH versions thereof are currently "
         "supported for watch-only\n",
         {
             {"hexstring", RPCArg::Type::STR_HEX, RPCArg::Optional::NO,
              "The hex string of the raw transaction"},
             {"options",
              RPCArg::Type::OBJ,
              RPCArg::Optional::OMITTED_NAMED_ARG,
              "for backward compatibility: passing in a true instead of an "
              "object will result in {\"includeWatching\":true}",
              {
                  {"changeAddress", RPCArg::Type::STR,
                   /* default */ "pool address",
                   "The bitcoin address to receive the change"},
                  {"changePosition", RPCArg::Type::NUM, /* default */ "",
                   "The index of the change output"},
                  {"includeWatching", RPCArg::Type::BOOL,
                   /* default */ "true for watch-only wallets, otherwise false",
                   "Also select inputs which are watch only.\n"
                   "Only solvable inputs can be used. Watch-only destinations "
                   "are solvable if the public key and/or output script was "
                   "imported,\n"
                   "e.g. with 'importpubkey' or 'importmulti' with the "
                   "'pubkeys' or 'desc' field."},
                  {"lockUnspents", RPCArg::Type::BOOL, /* default */ "false",
                   "Lock selected unspent outputs"},
                  {"feeRate", RPCArg::Type::AMOUNT, /* default */
                   "not set: makes wallet determine the fee",
                   "Set a specific fee rate in " + CURRENCY_UNIT + "/kB"},
                  {
                      "subtractFeeFromOutputs",
                      RPCArg::Type::ARR,
                      /* default */ "empty array",
                      "A json array of integers.\n"
                      "                              The fee will be equally "
                      "deducted from the amount of each specified output.\n"
                      "                              Those recipients will "
                      "receive less bitcoins than you enter in their "
                      "corresponding amount field.\n"
                      "                              If no outputs are "
                      "specified here, the sender pays the fee.",
                      {
                          {"vout_index", RPCArg::Type::NUM,
                           RPCArg::Optional::OMITTED,
                           "The zero-based output index, before a change output "
                           "is added."},
                      },
                  },
              },
              "options"},
         },
         RPCResult{
             RPCResult::Type::OBJ,
             "",
             "",
             {
                 {RPCResult::Type::STR_HEX, "hex",
                  "The resulting raw transaction (hex-encoded string)"},
                 {RPCResult::Type::STR_AMOUNT, "fee",
                  "Fee in " + CURRENCY_UNIT + " the resulting transaction pays"},
                 {RPCResult::Type::NUM, "changepos",
                  "The position of the added change output, or -1"},
             }},
         RPCExamples{
             "\nCreate a transaction with no inputs\n" +
             HelpExampleCli("createrawtransaction",
                            "\"[]\" \"{\\\"myaddress\\\":0.01}\"") +
             "\nAdd sufficient unsigned inputs to meet the output value\n" +
             HelpExampleCli("fundrawtransaction", "\"rawtransactionhex\"") +
             "\nSign the transaction\n" +
             HelpExampleCli("signrawtransactionwithwallet",
                            "\"fundedtransactionhex\"") +
             "\nSend the transaction\n" +
             HelpExampleCli("sendrawtransaction", "\"signedtransactionhex\"")},
     }
         .Check(request);
 
     RPCTypeCheck(request.params, {UniValue::VSTR, UniValueType()});
 
     // parse hex string from parameter
     CMutableTransaction tx;
     if (!DecodeHexTx(tx, request.params[0].get_str())) {
         throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "TX decode failed");
     }
 
     Amount fee;
     int change_position;
     FundTransaction(pwallet, tx, fee, change_position, request.params[1]);
 
     UniValue result(UniValue::VOBJ);
     result.pushKV("hex", EncodeHexTx(CTransaction(tx)));
     result.pushKV("fee", ValueFromAmount(fee));
     result.pushKV("changepos", change_position);
 
     return result;
 }
 
 UniValue signrawtransactionwithwallet(const Config &config,
                                       const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     const CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "signrawtransactionwithwallet",
         "Sign inputs for raw transaction (serialized, hex-encoded).\n"
         "The second optional argument (may be null) is an array of previous "
         "transaction outputs that\n"
         "this transaction depends on but may not yet be in the block chain.\n" +
             HelpRequiringPassphrase(pwallet) + "\n",
         {
             {"hexstring", RPCArg::Type::STR, RPCArg::Optional::NO,
              "The transaction hex string"},
             {
                 "prevtxs",
                 RPCArg::Type::ARR,
                 RPCArg::Optional::OMITTED_NAMED_ARG,
                 "A json array of previous dependent transaction outputs",
                 {
                     {
                         "",
                         RPCArg::Type::OBJ,
                         RPCArg::Optional::OMITTED,
                         "",
                         {
                             {"txid", RPCArg::Type::STR_HEX,
                              RPCArg::Optional::NO, "The transaction id"},
                             {"vout", RPCArg::Type::NUM, RPCArg::Optional::NO,
                              "The output number"},
                             {"scriptPubKey", RPCArg::Type::STR_HEX,
                              RPCArg::Optional::NO, "script key"},
                             {"redeemScript", RPCArg::Type::STR_HEX,
                              RPCArg::Optional::OMITTED, "(required for P2SH)"},
                             {"amount", RPCArg::Type::AMOUNT,
                              RPCArg::Optional::NO, "The amount spent"},
                         },
                     },
                 },
             },
             {"sighashtype", RPCArg::Type::STR, /* default */ "ALL|FORKID",
              "The signature hash type. Must be one of\n"
              "       \"ALL|FORKID\"\n"
              "       \"NONE|FORKID\"\n"
              "       \"SINGLE|FORKID\"\n"
              "       \"ALL|FORKID|ANYONECANPAY\"\n"
              "       \"NONE|FORKID|ANYONECANPAY\"\n"
              "       \"SINGLE|FORKID|ANYONECANPAY\""},
         },
         RPCResult{
             RPCResult::Type::OBJ,
             "",
             "",
             {
                 {RPCResult::Type::STR_HEX, "hex",
                  "The hex-encoded raw transaction with signature(s)"},
                 {RPCResult::Type::BOOL, "complete",
                  "If the transaction has a complete set of signatures"},
                 {RPCResult::Type::ARR,
                  "errors",
                  "Script verification errors (if there are any)",
                  {
                      {RPCResult::Type::OBJ,
                       "",
                       "",
                       {
                           {RPCResult::Type::STR_HEX, "txid",
                            "The hash of the referenced, previous transaction"},
                           {RPCResult::Type::NUM, "vout",
                            "The index of the output to spent and used as "
                            "input"},
                           {RPCResult::Type::STR_HEX, "scriptSig",
                            "The hex-encoded signature script"},
                           {RPCResult::Type::NUM, "sequence",
                            "Script sequence number"},
                           {RPCResult::Type::STR, "error",
                            "Verification or signing error related to the "
                            "input"},
                       }},
                  }},
             }},
         RPCExamples{
             HelpExampleCli("signrawtransactionwithwallet", "\"myhex\"") +
             HelpExampleRpc("signrawtransactionwithwallet", "\"myhex\"")},
     }
         .Check(request);
 
     RPCTypeCheck(request.params,
                  {UniValue::VSTR, UniValue::VARR, UniValue::VSTR}, true);
 
     CMutableTransaction mtx;
     if (!DecodeHexTx(mtx, request.params[0].get_str())) {
         throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "TX decode failed");
     }
 
     // Sign the transaction
     LOCK(pwallet->cs_wallet);
     EnsureWalletIsUnlocked(pwallet);
 
     // Fetch previous transactions (inputs):
     std::map<COutPoint, Coin> coins;
     for (const CTxIn &txin : mtx.vin) {
         // Create empty map entry keyed by prevout.
         coins[txin.prevout];
     }
     pwallet->chain().findCoins(coins);
 
     // Parse the prevtxs array
     ParsePrevouts(request.params[1], nullptr, coins);
 
     SigHashType nHashType = ParseSighashString(request.params[2]);
     if (!nHashType.hasForkId()) {
         throw JSONRPCError(RPC_INVALID_PARAMETER,
                            "Signature must use SIGHASH_FORKID");
     }
 
     // Script verification errors
     std::map<int, std::string> input_errors;
 
     bool complete =
         pwallet->SignTransaction(mtx, coins, nHashType, input_errors);
     UniValue result(UniValue::VOBJ);
     SignTransactionResultToJSON(mtx, complete, coins, input_errors, result);
     return result;
 }
 
 UniValue rescanblockchain(const Config &config, const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "rescanblockchain",
         "Rescan the local blockchain for wallet related transactions.\n"
         "Note: Use \"getwalletinfo\" to query the scanning progress.\n",
         {
             {"start_height", RPCArg::Type::NUM, /* default */ "0",
              "block height where the rescan should start"},
             {"stop_height", RPCArg::Type::NUM,
              RPCArg::Optional::OMITTED_NAMED_ARG,
              "the last block height that should be scanned"},
         },
         RPCResult{
             RPCResult::Type::OBJ,
             "",
             "",
             {
                 {RPCResult::Type::NUM, "start_height",
                  "The block height where the rescan started (the requested "
                  "height or 0)"},
                 {RPCResult::Type::NUM, "stop_height",
                  "The height of the last rescanned block. May be null in rare "
                  "cases if there was a reorg and the call didn't scan any "
                  "blocks because they were already scanned in the background."},
             }},
         RPCExamples{HelpExampleCli("rescanblockchain", "100000 120000") +
                     HelpExampleRpc("rescanblockchain", "100000, 120000")},
     }
         .Check(request);
 
     WalletRescanReserver reserver(*pwallet);
     if (!reserver.reserve()) {
         throw JSONRPCError(
             RPC_WALLET_ERROR,
             "Wallet is currently rescanning. Abort existing rescan or wait.");
     }
 
     int start_height = 0;
     std::optional<int> stop_height;
     BlockHash start_block;
     {
         LOCK(pwallet->cs_wallet);
         int tip_height = pwallet->GetLastBlockHeight();
 
         if (!request.params[0].isNull()) {
             start_height = request.params[0].get_int();
             if (start_height < 0 || start_height > tip_height) {
                 throw JSONRPCError(RPC_INVALID_PARAMETER,
                                    "Invalid start_height");
             }
         }
 
         if (!request.params[1].isNull()) {
             stop_height = request.params[1].get_int();
             if (*stop_height < 0 || *stop_height > tip_height) {
                 throw JSONRPCError(RPC_INVALID_PARAMETER,
                                    "Invalid stop_height");
             } else if (*stop_height < start_height) {
                 throw JSONRPCError(
                     RPC_INVALID_PARAMETER,
                     "stop_height must be greater than start_height");
             }
         }
 
         // We can't rescan beyond non-pruned blocks, stop and throw an error
         if (!pwallet->chain().hasBlocks(pwallet->GetLastBlockHash(),
                                         start_height, stop_height)) {
             throw JSONRPCError(
                 RPC_MISC_ERROR,
                 "Can't rescan beyond pruned data. Use RPC call "
                 "getblockchaininfo to determine your pruned height.");
         }
 
         CHECK_NONFATAL(pwallet->chain().findAncestorByHeight(
             pwallet->GetLastBlockHash(), start_height,
             FoundBlock().hash(start_block)));
     }
 
     CWallet::ScanResult result = pwallet->ScanForWalletTransactions(
         start_block, start_height, stop_height, reserver, true /* fUpdate */);
     switch (result.status) {
         case CWallet::ScanResult::SUCCESS:
             break;
         case CWallet::ScanResult::FAILURE:
             throw JSONRPCError(
                 RPC_MISC_ERROR,
                 "Rescan failed. Potentially corrupted data files.");
         case CWallet::ScanResult::USER_ABORT:
             throw JSONRPCError(RPC_MISC_ERROR, "Rescan aborted.");
             // no default case, so the compiler can warn about missing cases
     }
     UniValue response(UniValue::VOBJ);
     response.pushKV("start_height", start_height);
     response.pushKV("stop_height", result.last_scanned_height
                                        ? *result.last_scanned_height
                                        : UniValue());
     return response;
 }
 
 class DescribeWalletAddressVisitor : public boost::static_visitor<UniValue> {
 public:
     const SigningProvider *const provider;
 
     void ProcessSubScript(const CScript &subscript, UniValue &obj) const {
         // Always present: script type and redeemscript
         std::vector<std::vector<uint8_t>> solutions_data;
         txnouttype which_type = Solver(subscript, solutions_data);
         obj.pushKV("script", GetTxnOutputType(which_type));
         obj.pushKV("hex", HexStr(subscript.begin(), subscript.end()));
 
         CTxDestination embedded;
         if (ExtractDestination(subscript, embedded)) {
             // Only when the script corresponds to an address.
             UniValue subobj(UniValue::VOBJ);
             UniValue detail = DescribeAddress(embedded);
             subobj.pushKVs(detail);
             UniValue wallet_detail = boost::apply_visitor(*this, embedded);
             subobj.pushKVs(wallet_detail);
             subobj.pushKV("address", EncodeDestination(embedded, GetConfig()));
             subobj.pushKV("scriptPubKey",
                           HexStr(subscript.begin(), subscript.end()));
             // Always report the pubkey at the top level, so that
             // `getnewaddress()['pubkey']` always works.
             if (subobj.exists("pubkey")) {
                 obj.pushKV("pubkey", subobj["pubkey"]);
             }
             obj.pushKV("embedded", std::move(subobj));
         } else if (which_type == TX_MULTISIG) {
             // Also report some information on multisig scripts (which do not
             // have a corresponding address).
             // TODO: abstract out the common functionality between this logic
             // and ExtractDestinations.
             obj.pushKV("sigsrequired", solutions_data[0][0]);
             UniValue pubkeys(UniValue::VARR);
             for (size_t i = 1; i < solutions_data.size() - 1; ++i) {
                 CPubKey key(solutions_data[i].begin(), solutions_data[i].end());
                 pubkeys.push_back(HexStr(key.begin(), key.end()));
             }
             obj.pushKV("pubkeys", std::move(pubkeys));
         }
     }
 
     explicit DescribeWalletAddressVisitor(const SigningProvider *_provider)
         : provider(_provider) {}
 
     UniValue operator()(const CNoDestination &dest) const {
         return UniValue(UniValue::VOBJ);
     }
 
     UniValue operator()(const PKHash &pkhash) const {
         CKeyID keyID(pkhash);
         UniValue obj(UniValue::VOBJ);
         CPubKey vchPubKey;
         if (provider && provider->GetPubKey(keyID, vchPubKey)) {
             obj.pushKV("pubkey", HexStr(vchPubKey));
             obj.pushKV("iscompressed", vchPubKey.IsCompressed());
         }
         return obj;
     }
 
     UniValue operator()(const ScriptHash &scripthash) const {
         CScriptID scriptID(scripthash);
         UniValue obj(UniValue::VOBJ);
         CScript subscript;
         if (provider && provider->GetCScript(scriptID, subscript)) {
             ProcessSubScript(subscript, obj);
         }
         return obj;
     }
 };
 
 static UniValue DescribeWalletAddress(const CWallet *const pwallet,
                                       const CTxDestination &dest) {
     UniValue ret(UniValue::VOBJ);
     UniValue detail = DescribeAddress(dest);
     CScript script = GetScriptForDestination(dest);
     std::unique_ptr<SigningProvider> provider = nullptr;
     if (pwallet) {
         provider = pwallet->GetSolvingProvider(script);
     }
     ret.pushKVs(detail);
     ret.pushKVs(boost::apply_visitor(
         DescribeWalletAddressVisitor(provider.get()), dest));
     return ret;
 }
 
 /** Convert CAddressBookData to JSON record.  */
 static UniValue AddressBookDataToJSON(const CAddressBookData &data,
                                       const bool verbose) {
     UniValue ret(UniValue::VOBJ);
     if (verbose) {
         ret.pushKV("name", data.GetLabel());
     }
     ret.pushKV("purpose", data.purpose);
     return ret;
 }
 
 UniValue getaddressinfo(const Config &config, const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     const CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "getaddressinfo",
         "\nReturn information about the given bitcoin address.\n"
         "Some of the information will only be present if the address is in the "
         "active wallet.\n",
         {
             {"address", RPCArg::Type::STR, RPCArg::Optional::NO,
              "The bitcoin address for which to get information."},
         },
         RPCResult{
             RPCResult::Type::OBJ,
             "",
             "",
             {
                 {RPCResult::Type::STR, "address",
                  "The bitcoin address validated."},
                 {RPCResult::Type::STR_HEX, "scriptPubKey",
                  "The hex-encoded scriptPubKey generated by the address."},
                 {RPCResult::Type::BOOL, "ismine", "If the address is yours."},
                 {RPCResult::Type::BOOL, "iswatchonly",
                  "If the address is watchonly."},
                 {RPCResult::Type::BOOL, "solvable",
                  "If we know how to spend coins sent to this address, ignoring "
                  "the possible lack of private keys."},
                 {RPCResult::Type::STR, "desc", /* optional */ true,
                  "A descriptor for spending coins sent to this address (only "
                  "when solvable)."},
                 {RPCResult::Type::BOOL, "isscript", "If the key is a script."},
                 {RPCResult::Type::BOOL, "ischange",
                  "If the address was used for change output."},
                 {RPCResult::Type::STR, "script", /* optional */ true,
                  "The output script type. Only if isscript is true and the "
                  "redeemscript is known. Possible\n"
                  "                                                         "
                  "types: nonstandard, pubkey, pubkeyhash, scripthash, "
                  "multisig, nulldata."},
                 {RPCResult::Type::STR_HEX, "hex", /* optional */ true,
                  "The redeemscript for the p2sh address."},
                 {RPCResult::Type::ARR,
                  "pubkeys",
                  /* optional */ true,
                  "Array of pubkeys associated with the known redeemscript "
                  "(only if script is multisig).",
                  {
                      {RPCResult::Type::STR, "pubkey", ""},
                  }},
                 {RPCResult::Type::NUM, "sigsrequired", /* optional */ true,
                  "The number of signatures required to spend multisig output "
                  "(only if script is multisig)."},
                 {RPCResult::Type::STR_HEX, "pubkey", /* optional */ true,
                  "The hex value of the raw public key for single-key addresses "
                  "(possibly embedded in P2SH)."},
                 {RPCResult::Type::OBJ,
                  "embedded",
                  /* optional */ true,
                  "Information about the address embedded in P2SH, if "
                  "relevant and known.",
                  {
                      {RPCResult::Type::ELISION, "",
                       "Includes all\n"
                       "                                                        "
                       " getaddressinfo output fields for the embedded address, "
                       "excluding metadata (timestamp, hdkeypath,\n"
                       "hdseedid) and relation to the wallet (ismine, "
                       "iswatchonly)."},
                  }},
                 {RPCResult::Type::BOOL, "iscompressed", /* optional */ true,
                  "If the pubkey is compressed."},
                 {RPCResult::Type::STR, "label",
                  "DEPRECATED. The label associated with the address. Defaults "
                  "to \"\". Replaced by the labels array below."},
                 {RPCResult::Type::NUM_TIME, "timestamp", /* optional */ true,
                  "The creation time of the key, if available, expressed in " +
                      UNIX_EPOCH_TIME + "."},
                 {RPCResult::Type::STR, "hdkeypath", /* optional */ true,
                  "The HD keypath, if the key is HD and available."},
                 {RPCResult::Type::STR_HEX, "hdseedid", /* optional */ true,
                  "The Hash160 of the HD seed."},
                 {RPCResult::Type::STR_HEX, "hdmasterfingerprint",
                  /* optional */ true, "The fingerprint of the master key."},
                 {RPCResult::Type::ARR,
                  "labels",
                  "Array of labels associated with the address. Currently "
                  "limited to one label but returned\n"
                  "as an array to keep the API stable if multiple labels are "
                  "enabled in the future.",
                  {
                      {RPCResult::Type::STR, "label name",
                       "The label name. Defaults to \"\"."},
                      {RPCResult::Type::OBJ,
                       "",
                       "DEPRECATED, will be removed in a future version. To "
                       "re-enable, launch bitcoind with "
                       "`-deprecatedrpc=labelspurpose`",
                       {
                           {RPCResult::Type::STR, "name",
                            "The label name. Defaults to \"\"."},
                           {RPCResult::Type::STR, "purpose",
                            "The purpose of the associated address (send or "
                            "receive)."},
                       }},
                  }},
             }},
         RPCExamples{HelpExampleCli("getaddressinfo", EXAMPLE_ADDRESS) +
                     HelpExampleRpc("getaddressinfo", EXAMPLE_ADDRESS)},
     }
         .Check(request);
 
     LOCK(pwallet->cs_wallet);
 
     UniValue ret(UniValue::VOBJ);
     CTxDestination dest =
         DecodeDestination(request.params[0].get_str(), wallet->chainParams);
     // Make sure the destination is valid
     if (!IsValidDestination(dest)) {
         throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid address");
     }
 
     std::string currentAddress = EncodeDestination(dest, config);
     ret.pushKV("address", currentAddress);
 
     CScript scriptPubKey = GetScriptForDestination(dest);
     ret.pushKV("scriptPubKey",
                HexStr(scriptPubKey.begin(), scriptPubKey.end()));
 
     std::unique_ptr<SigningProvider> provider =
         pwallet->GetSolvingProvider(scriptPubKey);
 
     isminetype mine = pwallet->IsMine(dest);
     ret.pushKV("ismine", bool(mine & ISMINE_SPENDABLE));
 
     bool solvable = provider && IsSolvable(*provider, scriptPubKey);
     ret.pushKV("solvable", solvable);
 
     if (solvable) {
         ret.pushKV("desc",
                    InferDescriptor(scriptPubKey, *provider)->ToString());
     }
 
     ret.pushKV("iswatchonly", bool(mine & ISMINE_WATCH_ONLY));
 
     UniValue detail = DescribeWalletAddress(pwallet, dest);
     ret.pushKVs(detail);
 
     // Return label field if existing. Currently only one label can be
     // associated with an address, so the label should be equivalent to the
     // value of the name key/value pair in the labels array below.
     const auto *address_book_entry = pwallet->FindAddressBookEntry(dest);
     if (address_book_entry) {
         ret.pushKV("label", address_book_entry->GetLabel());
     }
 
     ret.pushKV("ischange", pwallet->IsChange(scriptPubKey));
 
     ScriptPubKeyMan *spk_man = pwallet->GetScriptPubKeyMan(scriptPubKey);
     if (spk_man) {
         if (const std::unique_ptr<CKeyMetadata> meta =
                 spk_man->GetMetadata(dest)) {
             ret.pushKV("timestamp", meta->nCreateTime);
             if (meta->has_key_origin) {
                 ret.pushKV("hdkeypath", WriteHDKeypath(meta->key_origin.path));
                 ret.pushKV("hdseedid", meta->hd_seed_id.GetHex());
                 ret.pushKV("hdmasterfingerprint",
                            HexStr(meta->key_origin.fingerprint,
                                   meta->key_origin.fingerprint + 4));
             }
         }
     }
 
     // Return a `labels` array containing the label associated with the address,
     // equivalent to the `label` field above. Currently only one label can be
     // associated with an address, but we return an array so the API remains
     // stable if we allow multiple labels to be associated with an address in
     // the future.
     //
     // DEPRECATED: The previous behavior of returning an array containing a JSON
     // object of `name` and `purpose` key/value pairs has been deprecated.
     UniValue labels(UniValue::VARR);
     if (address_book_entry) {
         if (pwallet->chain().rpcEnableDeprecated("labelspurpose")) {
             labels.push_back(AddressBookDataToJSON(*address_book_entry, true));
         } else {
             labels.push_back(address_book_entry->GetLabel());
         }
     }
     ret.pushKV("labels", std::move(labels));
 
     return ret;
 }
 
 UniValue getaddressesbylabel(const Config &config,
                              const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     const CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "getaddressesbylabel",
         "Returns the list of addresses assigned the specified label.\n",
         {
             {"label", RPCArg::Type::STR, RPCArg::Optional::NO, "The label."},
         },
         RPCResult{RPCResult::Type::OBJ_DYN,
                   "",
                   "json object with addresses as keys",
                   {
                       {RPCResult::Type::OBJ,
                        "address",
                        "json object with information about address",
                        {
                            {RPCResult::Type::STR, "purpose",
                             "Purpose of address (\"send\" for sending address, "
                             "\"receive\" for receiving address)"},
                        }},
                   }},
         RPCExamples{HelpExampleCli("getaddressesbylabel", "\"tabby\"") +
                     HelpExampleRpc("getaddressesbylabel", "\"tabby\"")},
     }
         .Check(request);
 
     LOCK(pwallet->cs_wallet);
 
     std::string label = LabelFromValue(request.params[0]);
 
     // Find all addresses that have the given label
     UniValue ret(UniValue::VOBJ);
     std::set<std::string> addresses;
     for (const std::pair<const CTxDestination, CAddressBookData> &item :
          pwallet->m_address_book) {
         if (item.second.IsChange()) {
             continue;
         }
         if (item.second.GetLabel() == label) {
             std::string address = EncodeDestination(item.first, config);
             // CWallet::m_address_book is not expected to contain duplicate
             // address strings, but build a separate set as a precaution just in
             // case it does.
             bool unique = addresses.emplace(address).second;
             CHECK_NONFATAL(unique);
             // UniValue::pushKV checks if the key exists in O(N)
             // and since duplicate addresses are unexpected (checked with
             // std::set in O(log(N))), UniValue::__pushKV is used instead,
             // which currently is O(1).
             ret.__pushKV(address, AddressBookDataToJSON(item.second, false));
         }
     }
 
     if (ret.empty()) {
         throw JSONRPCError(RPC_WALLET_INVALID_LABEL_NAME,
                            std::string("No addresses with label " + label));
     }
 
     return ret;
 }
 
 UniValue listlabels(const Config &config, const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     const CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "listlabels",
         "Returns the list of all labels, or labels that are assigned to "
         "addresses with a specific purpose.\n",
         {
             {"purpose", RPCArg::Type::STR, RPCArg::Optional::OMITTED_NAMED_ARG,
              "Address purpose to list labels for ('send','receive'). An empty "
              "string is the same as not providing this argument."},
         },
         RPCResult{RPCResult::Type::ARR,
                   "",
                   "",
                   {
                       {RPCResult::Type::STR, "label", "Label name"},
                   }},
         RPCExamples{"\nList all labels\n" + HelpExampleCli("listlabels", "") +
                     "\nList labels that have receiving addresses\n" +
                     HelpExampleCli("listlabels", "receive") +
                     "\nList labels that have sending addresses\n" +
                     HelpExampleCli("listlabels", "send") +
                     "\nAs a JSON-RPC call\n" +
                     HelpExampleRpc("listlabels", "receive")},
     }
         .Check(request);
 
     LOCK(pwallet->cs_wallet);
 
     std::string purpose;
     if (!request.params[0].isNull()) {
         purpose = request.params[0].get_str();
     }
 
     // Add to a set to sort by label name, then insert into Univalue array
     std::set<std::string> label_set;
     for (const std::pair<const CTxDestination, CAddressBookData> &entry :
          pwallet->m_address_book) {
         if (entry.second.IsChange()) {
             continue;
         }
         if (purpose.empty() || entry.second.purpose == purpose) {
             label_set.insert(entry.second.GetLabel());
         }
     }
 
     UniValue ret(UniValue::VARR);
     for (const std::string &name : label_set) {
         ret.push_back(name);
     }
 
     return ret;
 }
 
 static UniValue sethdseed(const Config &config, const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "sethdseed",
         "Set or generate a new HD wallet seed. Non-HD wallets will not be "
         "upgraded to being a HD wallet. Wallets that are already\n"
         "HD will have a new HD seed set so that new keys added to the keypool "
         "will be derived from this new seed.\n"
         "\nNote that you will need to MAKE A NEW BACKUP of your wallet after "
         "setting the HD wallet seed.\n" +
             HelpRequiringPassphrase(pwallet) + "\n",
         {
             {"newkeypool", RPCArg::Type::BOOL, /* default */ "true",
              "Whether to flush old unused addresses, including change "
              "addresses, from the keypool and regenerate it.\n"
              "                             If true, the next address from "
              "getnewaddress and change address from getrawchangeaddress will "
              "be from this new seed.\n"
              "                             If false, addresses (including "
              "change addresses if the wallet already had HD Chain Split "
              "enabled) from the existing\n"
              "                             keypool will be used until it has "
              "been depleted."},
             {"seed", RPCArg::Type::STR, /* default */ "random seed",
              "The WIF private key to use as the new HD seed.\n"
              "                             The seed value can be retrieved "
              "using the dumpwallet command. It is the private key marked "
              "hdseed=1"},
         },
         RPCResults{},
         RPCExamples{HelpExampleCli("sethdseed", "") +
                     HelpExampleCli("sethdseed", "false") +
                     HelpExampleCli("sethdseed", "true \"wifkey\"") +
                     HelpExampleRpc("sethdseed", "true, \"wifkey\"")},
     }
         .Check(request);
 
     LegacyScriptPubKeyMan &spk_man =
         EnsureLegacyScriptPubKeyMan(*pwallet, true);
 
     if (pwallet->chain().isInitialBlockDownload()) {
         throw JSONRPCError(
             RPC_CLIENT_IN_INITIAL_DOWNLOAD,
             "Cannot set a new HD seed while still in Initial Block Download");
     }
 
     if (pwallet->IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS)) {
         throw JSONRPCError(
             RPC_WALLET_ERROR,
             "Cannot set a HD seed to a wallet with private keys disabled");
     }
 
     LOCK2(pwallet->cs_wallet, spk_man.cs_KeyStore);
 
     // Do not do anything to non-HD wallets
     if (!pwallet->CanSupportFeature(FEATURE_HD)) {
         throw JSONRPCError(
             RPC_WALLET_ERROR,
             "Cannot set a HD seed on a non-HD wallet. Use the upgradewallet "
             "RPC in order to upgrade a non-HD wallet to HD");
     }
 
     EnsureWalletIsUnlocked(pwallet);
 
     bool flush_key_pool = true;
     if (!request.params[0].isNull()) {
         flush_key_pool = request.params[0].get_bool();
     }
 
     CPubKey master_pub_key;
     if (request.params[1].isNull()) {
         master_pub_key = spk_man.GenerateNewSeed();
     } else {
         CKey key = DecodeSecret(request.params[1].get_str());
         if (!key.IsValid()) {
             throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY,
                                "Invalid private key");
         }
 
         if (HaveKey(spk_man, key)) {
             throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY,
                                "Already have this key (either as an HD seed or "
                                "as a loose private key)");
         }
 
         master_pub_key = spk_man.DeriveNewSeed(key);
     }
 
     spk_man.SetHDSeed(master_pub_key);
     if (flush_key_pool) {
         spk_man.NewKeyPool();
     }
 
     return NullUniValue;
 }
 
 static UniValue walletprocesspsbt(const Config &config,
                                   const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     const CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "walletprocesspsbt",
         "Update a PSBT with input information from our wallet and then sign "
         "inputs that we can sign for." +
             HelpRequiringPassphrase(pwallet) + "\n",
         {
             {"psbt", RPCArg::Type::STR, RPCArg::Optional::NO,
              "The transaction base64 string"},
             {"sign", RPCArg::Type::BOOL, /* default */ "true",
              "Also sign the transaction when updating"},
             {"sighashtype", RPCArg::Type::STR, /* default */ "ALL|FORKID",
              "The signature hash type to sign with if not specified by "
              "the PSBT. Must be one of\n"
              "       \"ALL|FORKID\"\n"
              "       \"NONE|FORKID\"\n"
              "       \"SINGLE|FORKID\"\n"
              "       \"ALL|FORKID|ANYONECANPAY\"\n"
              "       \"NONE|FORKID|ANYONECANPAY\"\n"
              "       \"SINGLE|FORKID|ANYONECANPAY\""},
             {"bip32derivs", RPCArg::Type::BOOL, /* default */ "true",
              "Includes the BIP 32 derivation paths for public keys if we know "
              "them"},
         },
         RPCResult{RPCResult::Type::OBJ,
                   "",
                   "",
                   {
                       {RPCResult::Type::STR, "psbt",
                        "The base64-encoded partially signed transaction"},
                       {RPCResult::Type::BOOL, "complete",
                        "If the transaction has a complete set of signatures"},
                   }},
         RPCExamples{HelpExampleCli("walletprocesspsbt", "\"psbt\"")},
     }
         .Check(request);
 
     RPCTypeCheck(request.params,
                  {UniValue::VSTR, UniValue::VBOOL, UniValue::VSTR});
 
     // Unserialize the transaction
     PartiallySignedTransaction psbtx;
     std::string error;
     if (!DecodeBase64PSBT(psbtx, request.params[0].get_str(), error)) {
         throw JSONRPCError(RPC_DESERIALIZATION_ERROR,
                            strprintf("TX decode failed %s", error));
     }
 
     // Get the sighash type
     SigHashType nHashType = ParseSighashString(request.params[2]);
     if (!nHashType.hasForkId()) {
         throw JSONRPCError(RPC_INVALID_PARAMETER,
                            "Signature must use SIGHASH_FORKID");
     }
 
     // Fill transaction with our data and also sign
     bool sign =
         request.params[1].isNull() ? true : request.params[1].get_bool();
     bool bip32derivs =
         request.params[3].isNull() ? true : request.params[3].get_bool();
     bool complete = true;
     const TransactionError err =
         pwallet->FillPSBT(psbtx, complete, nHashType, sign, bip32derivs);
     if (err != TransactionError::OK) {
         throw JSONRPCTransactionError(err);
     }
 
     UniValue result(UniValue::VOBJ);
     CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
     ssTx << psbtx;
     result.pushKV("psbt", EncodeBase64(ssTx.str()));
     result.pushKV("complete", complete);
 
     return result;
 }
 
 static UniValue walletcreatefundedpsbt(const Config &config,
                                        const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{
         "walletcreatefundedpsbt",
         "Creates and funds a transaction in the Partially Signed Transaction "
         "format. Inputs will be added if supplied inputs are not enough\n"
         "Implements the Creator and Updater roles.\n",
         {
             {
                 "inputs",
                 RPCArg::Type::ARR,
                 RPCArg::Optional::NO,
                 "A json array of json objects",
                 {
                     {
                         "",
                         RPCArg::Type::OBJ,
                         RPCArg::Optional::OMITTED,
                         "",
                         {
                             {"txid", RPCArg::Type::STR_HEX,
                              RPCArg::Optional::NO, "The transaction id"},
                             {"vout", RPCArg::Type::NUM, RPCArg::Optional::NO,
                              "The output number"},
                             {"sequence", RPCArg::Type::NUM,
                              RPCArg::Optional::NO, "The sequence number"},
                         },
                     },
                 },
             },
             {
                 "outputs",
                 RPCArg::Type::ARR,
                 RPCArg::Optional::NO,
                 "a json array with outputs (key-value pairs), where none of "
                 "the keys are duplicated.\n"
                 "That is, each address can only appear once and there can only "
                 "be one 'data' object.\n"
                 "For compatibility reasons, a dictionary, which holds the "
                 "key-value pairs directly, is also\n"
                 "                             accepted as second parameter.",
                 {
                     {
                         "",
                         RPCArg::Type::OBJ,
                         RPCArg::Optional::OMITTED,
                         "",
                         {
                             {"address", RPCArg::Type::AMOUNT,
                              RPCArg::Optional::NO,
                              "A key-value pair. The key (string) is the "
                              "bitcoin address, the value (float or string) is "
                              "the amount in " +
                                  CURRENCY_UNIT + ""},
                         },
                     },
                     {
                         "",
                         RPCArg::Type::OBJ,
                         RPCArg::Optional::OMITTED,
                         "",
                         {
                             {"data", RPCArg::Type::STR_HEX,
                              RPCArg::Optional::NO,
                              "A key-value pair. The key must be \"data\", the "
                              "value is hex-encoded data"},
                         },
                     },
                 },
             },
             {"locktime", RPCArg::Type::NUM, /* default */ "0",
              "Raw locktime. Non-0 value also locktime-activates inputs\n"
              "                             Allows this transaction to be "
              "replaced by a transaction with higher fees. If provided, it is "
              "an error if explicit sequence numbers are incompatible."},
             {"options",
              RPCArg::Type::OBJ,
              RPCArg::Optional::OMITTED_NAMED_ARG,
              "",
              {
                  {"changeAddress", RPCArg::Type::STR_HEX,
                   /* default */ "pool address",
                   "The bitcoin address to receive the change"},
                  {"changePosition", RPCArg::Type::NUM,
                   /* default */ "random", "The index of the change output"},
                  {"includeWatching", RPCArg::Type::BOOL,
                   /* default */ "true for watch-only wallets, otherwise false",
                   "Also select inputs which are watch only"},
                  {"lockUnspents", RPCArg::Type::BOOL, /* default */ "false",
                   "Lock selected unspent outputs"},
                  {"feeRate", RPCArg::Type::AMOUNT, /* default */
                   "not set: makes wallet determine the fee",
                   "Set a specific fee rate in " + CURRENCY_UNIT + "/kB"},
                  {
                      "subtractFeeFromOutputs",
                      RPCArg::Type::ARR,
                      /* default */ "empty array",
                      "A json array of integers.\n"
                      "                              The fee will be equally "
                      "deducted from the amount of each specified output.\n"
                      "                              Those recipients will "
                      "receive less bitcoins than you enter in their "
                      "corresponding amount field.\n"
                      "                              If no outputs are "
                      "specified here, the sender pays the fee.",
                      {
                          {"vout_index", RPCArg::Type::NUM,
                           RPCArg::Optional::OMITTED,
                           "The zero-based output index, before a change output "
                           "is added."},
                      },
                  },
              },
              "options"},
             {"bip32derivs", RPCArg::Type::BOOL, /* default */ "true",
              "Includes the BIP 32 derivation paths for public keys if we know "
              "them"},
         },
         RPCResult{
             RPCResult::Type::OBJ,
             "",
             "",
             {
                 {RPCResult::Type::STR, "psbt",
                  "The resulting raw transaction (base64-encoded string)"},
                 {RPCResult::Type::STR_AMOUNT, "fee",
                  "Fee in " + CURRENCY_UNIT + " the resulting transaction pays"},
                 {RPCResult::Type::NUM, "changepos",
                  "The position of the added change output, or -1"},
             }},
         RPCExamples{
             "\nCreate a transaction with no inputs\n" +
             HelpExampleCli("walletcreatefundedpsbt",
                            "\"[{\\\"txid\\\":\\\"myid\\\",\\\"vout\\\":0}]\" "
                            "\"[{\\\"data\\\":\\\"00010203\\\"}]\"")},
     }
         .Check(request);
 
     RPCTypeCheck(request.params,
                  {UniValue::VARR,
                   UniValueType(), // ARR or OBJ, checked later
                   UniValue::VNUM, UniValue::VOBJ},
                  true);
 
     Amount fee;
     int change_position;
     CMutableTransaction rawTx =
         ConstructTransaction(wallet->chainParams, request.params[0],
                              request.params[1], request.params[2]);
     FundTransaction(pwallet, rawTx, fee, change_position, request.params[3]);
 
     // Make a blank psbt
     PartiallySignedTransaction psbtx(rawTx);
 
     // Fill transaction with out data but don't sign
     bool bip32derivs =
         request.params[4].isNull() ? true : request.params[4].get_bool();
     bool complete = true;
     const TransactionError err = pwallet->FillPSBT(
         psbtx, complete, SigHashType().withForkId(), false, bip32derivs);
     if (err != TransactionError::OK) {
         throw JSONRPCTransactionError(err);
     }
 
     // Serialize the PSBT
     CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
     ssTx << psbtx;
 
     UniValue result(UniValue::VOBJ);
     result.pushKV("psbt", EncodeBase64(ssTx.str()));
     result.pushKV("fee", ValueFromAmount(fee));
     result.pushKV("changepos", change_position);
     return result;
 }
 
 static UniValue upgradewallet(const Config &config,
                               const JSONRPCRequest &request) {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
     CWallet *const pwallet = wallet.get();
 
     if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
         return NullUniValue;
     }
 
     RPCHelpMan{"upgradewallet",
                "\nUpgrade the wallet. Upgrades to the latest version if no "
                "version number is specified\n"
                "New keys may be generated and a new wallet backup will need to "
                "be made.",
                {{"version", RPCArg::Type::NUM,
                  /* default */ strprintf("%d", FEATURE_LATEST),
                  "The version number to upgrade to. Default is the latest "
                  "wallet version"}},
                RPCResults{},
                RPCExamples{HelpExampleCli("upgradewallet", "200300") +
                            HelpExampleRpc("upgradewallet", "200300")}}
         .Check(request);
 
     RPCTypeCheck(request.params, {UniValue::VNUM}, true);
 
     EnsureWalletIsUnlocked(pwallet);
 
     int version = 0;
     if (!request.params[0].isNull()) {
         version = request.params[0].get_int();
     }
 
     bilingual_str error;
     std::vector<bilingual_str> warnings;
     if (!pwallet->UpgradeWallet(version, error, warnings)) {
         throw JSONRPCError(RPC_WALLET_ERROR, error.original);
     }
     return error.original;
 }
 
-void RegisterWalletRPCCommands(
-    interfaces::Chain &chain,
-    std::vector<std::unique_ptr<interfaces::Handler>> &handlers) {
+Span<const CRPCCommand> GetWalletRPCCommands() {
     // clang-format off
     static const CRPCCommand commands[] = {
         //  category            name                            actor (function)              argNames
         //  ------------------- ------------------------        ----------------------        ----------
         { "rawtransactions",    "fundrawtransaction",           fundrawtransaction,           {"hexstring","options"} },
         { "wallet",             "abandontransaction",           abandontransaction,           {"txid"} },
         { "wallet",             "addmultisigaddress",           addmultisigaddress,           {"nrequired","keys","label"} },
         { "wallet",             "backupwallet",                 backupwallet,                 {"destination"} },
         { "wallet",             "createwallet",                 createwallet,                 {"wallet_name", "disable_private_keys", "blank", "passphrase", "avoid_reuse", "descriptors"} },
         { "wallet",             "encryptwallet",                encryptwallet,                {"passphrase"} },
         { "wallet",             "getaddressesbylabel",          getaddressesbylabel,          {"label"} },
         { "wallet",             "getaddressinfo",               getaddressinfo,               {"address"} },
         { "wallet",             "getbalance",                   getbalance,                   {"dummy","minconf","include_watchonly","avoid_reuse"} },
         { "wallet",             "getnewaddress",                getnewaddress,                {"label", "address_type"} },
         { "wallet",             "getrawchangeaddress",          getrawchangeaddress,          {"address_type"} },
         { "wallet",             "getreceivedbyaddress",         getreceivedbyaddress,         {"address","minconf"} },
         { "wallet",             "getreceivedbylabel",           getreceivedbylabel,           {"label","minconf"} },
         { "wallet",             "gettransaction",               gettransaction,               {"txid","include_watchonly","verbose"} },
         { "wallet",             "getunconfirmedbalance",         getunconfirmedbalance,         {} },
         { "wallet",             "getbalances",                  getbalances,                  {} },
         { "wallet",             "getwalletinfo",                getwalletinfo,                {} },
         { "wallet",             "keypoolrefill",                 keypoolrefill,                 {"newsize"} },
         { "wallet",             "listaddressgroupings",         listaddressgroupings,         {} },
         { "wallet",             "listlabels",                   listlabels,                   {"purpose"} },
         { "wallet",             "listlockunspent",              listlockunspent,              {} },
         { "wallet",             "listreceivedbyaddress",        listreceivedbyaddress,        {"minconf","include_empty","include_watchonly","address_filter"} },
         { "wallet",             "listreceivedbylabel",          listreceivedbylabel,          {"minconf","include_empty","include_watchonly"} },
         { "wallet",             "listsinceblock",               listsinceblock,               {"blockhash","target_confirmations","include_watchonly","include_removed"} },
         { "wallet",             "listtransactions",             listtransactions,             {"label|dummy","count","skip","include_watchonly"} },
         { "wallet",             "listunspent",                  listunspent,                  {"minconf","maxconf","addresses","include_unsafe","query_options"} },
         { "wallet",             "listwalletdir",                listwalletdir,                {} },
         { "wallet",             "listwallets",                  listwallets,                  {} },
         { "wallet",             "loadwallet",                   loadwallet,                   {"filename"} },
         { "wallet",             "lockunspent",                  lockunspent,                  {"unlock","transactions"} },
         { "wallet",             "rescanblockchain",             rescanblockchain,             {"start_height", "stop_height"} },
         { "wallet",             "sendmany",                     sendmany,                     {"dummy","amounts","minconf","comment","subtractfeefrom"} },
         { "wallet",             "sendtoaddress",                sendtoaddress,                {"address","amount","comment","comment_to","subtractfeefromamount","avoid_reuse"} },
         { "wallet",             "sethdseed",                    sethdseed,                    {"newkeypool","seed"} },
         { "wallet",             "setlabel",                     setlabel,                     {"address","label"} },
         { "wallet",             "settxfee",                     settxfee,                     {"amount"} },
         { "wallet",             "setwalletflag",                 setwalletflag,                 {"flag","value"} },
         { "wallet",             "signmessage",                  signmessage,                  {"address","message"} },
         { "wallet",             "signrawtransactionwithwallet", signrawtransactionwithwallet, {"hextring","prevtxs","sighashtype"} },
         { "wallet",             "unloadwallet",                 unloadwallet,                 {"wallet_name"} },
         { "wallet",             "upgradewallet",                upgradewallet,                {"version"} },
         { "wallet",             "walletcreatefundedpsbt",       walletcreatefundedpsbt,       {"inputs","outputs","locktime","options","bip32derivs"} },
         { "wallet",             "walletlock",                   walletlock,                   {} },
         { "wallet",             "walletpassphrase",             walletpassphrase,             {"passphrase","timeout"} },
         { "wallet",             "walletpassphrasechange",       walletpassphrasechange,       {"oldpassphrase","newpassphrase"} },
         { "wallet",             "walletprocesspsbt",            walletprocesspsbt,            {"psbt","sign","sighashtype","bip32derivs"} },
     };
     // clang-format on
 
-    for (unsigned int vcidx = 0; vcidx < ARRAYLEN(commands); vcidx++) {
-        handlers.emplace_back(chain.handleRpc(commands[vcidx]));
-    }
+    return MakeSpan(commands);
 }
-
-interfaces::Chain *g_rpc_chain = nullptr;
diff --git a/src/wallet/rpcwallet.h b/src/wallet/rpcwallet.h
index 7071ec41d..babfe25e3 100644
--- a/src/wallet/rpcwallet.h
+++ b/src/wallet/rpcwallet.h
@@ -1,57 +1,51 @@
 // Copyright (c) 2016 The Bitcoin Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 #ifndef BITCOIN_WALLET_RPCWALLET_H
 #define BITCOIN_WALLET_RPCWALLET_H
 
 #include <script/sighashtype.h>
+#include <span.h>
 
 #include <memory>
 #include <string>
 #include <vector>
 
-class Config;
-class CRPCTable;
+class CRPCCommand;
 class CTransaction;
 class CWallet;
+class Config;
 class JSONRPCRequest;
 class LegacyScriptPubKeyMan;
 struct PartiallySignedTransaction;
 class UniValue;
+struct WalletContext;
 
-namespace interfaces {
-class Chain;
-class Handler;
-} // namespace interfaces
-
-//! Pointer to chain interface that needs to be declared as a global to be
-//! accessible loadwallet and createwallet methods. Due to limitations of the
-//! RPC framework, there's currently no direct way to pass in state to RPC
-//! methods without globals.
-extern interfaces::Chain *g_rpc_chain;
+namespace util {
+class Ref;
+}
 
-void RegisterWalletRPCCommands(
-    interfaces::Chain &chain,
-    std::vector<std::unique_ptr<interfaces::Handler>> &handlers);
+Span<const CRPCCommand> GetWalletRPCCommands();
 
 /**
  * Figures out what wallet, if any, to use for a JSONRPCRequest.
  *
  * @param[in] request JSONRPCRequest that wishes to access a wallet
  * @return NULL if no wallet should be used, or a pointer to the CWallet
  */
 std::shared_ptr<CWallet>
 GetWalletForJSONRPCRequest(const JSONRPCRequest &request);
 
 std::string HelpRequiringPassphrase(const CWallet *);
 void EnsureWalletIsUnlocked(const CWallet *);
 bool EnsureWalletIsAvailable(const CWallet *, bool avoidException);
+WalletContext &EnsureWalletContext(const util::Ref &context);
 LegacyScriptPubKeyMan &EnsureLegacyScriptPubKeyMan(CWallet &wallet,
                                                    bool also_create = false);
 
 UniValue signrawtransactionwithwallet(const Config &config,
                                       const JSONRPCRequest &request);
 UniValue getaddressinfo(const Config &config, const JSONRPCRequest &request);
 
 #endif // BITCOIN_WALLET_RPCWALLET_H