diff --git a/src/interfaces/node.h b/src/interfaces/node.h
--- a/src/interfaces/node.h
+++ b/src/interfaces/node.h
@@ -56,6 +56,9 @@
     //! Choose network parameters.
     virtual void selectParams(const std::string &network) = 0;
 
+    //! Get network name.
+    virtual std::string getNetwork() = 0;
+
     //! Init logging.
     virtual void initLogging() = 0;
 
diff --git a/src/interfaces/node.cpp b/src/interfaces/node.cpp
--- a/src/interfaces/node.cpp
+++ b/src/interfaces/node.cpp
@@ -67,6 +67,7 @@
         void selectParams(const std::string &network) override {
             SelectParams(network);
         }
+        std::string getNetwork() override { return Params().NetworkIDString(); }
         void initLogging() override { InitLogging(); }
         void initParameterInteraction() override { InitParameterInteraction(); }
         std::string getWarnings(const std::string &type) override {
diff --git a/src/interfaces/wallet.h b/src/interfaces/wallet.h
--- a/src/interfaces/wallet.h
+++ b/src/interfaces/wallet.h
@@ -5,11 +5,11 @@
 #ifndef BITCOIN_INTERFACES_WALLET_H
 #define BITCOIN_INTERFACES_WALLET_H
 
-#include <amount.h>                    // For Amount
-#include <primitives/transaction.h>    // For CTxOut
-#include <pubkey.h>                    // For CTxDestination (CKeyID and CScriptID)
-#include <script/ismine.h>             // For isminefilter, isminetype
-#include <script/standard.h>           // For CTxDestination
+#include <amount.h>                 // For Amount
+#include <primitives/transaction.h> // For CTxOut
+#include <pubkey.h>                 // For CTxDestination (CKeyID and CScriptID)
+#include <script/ismine.h>          // For isminefilter, isminetype
+#include <script/standard.h>        // For CTxDestination
 #include <support/allocators/secure.h> // For SecureString
 #include <ui_interface.h>              // For ChangeType
 
@@ -78,7 +78,11 @@
     //! Get chainparams.
     virtual const CChainParams &getChainParams() = 0;
 
-    // Get key from pool.
+    //! Get set of addresses corresponding to a given label.
+    virtual std::set<CTxDestination>
+    getLabelAddresses(const std::string &label) = 0;
+
+    //! Get key from pool.
     virtual bool getKeyFromPool(bool internal, CPubKey &pub_key) = 0;
 
     //! Get public key.
diff --git a/src/interfaces/wallet.cpp b/src/interfaces/wallet.cpp
--- a/src/interfaces/wallet.cpp
+++ b/src/interfaces/wallet.cpp
@@ -84,6 +84,10 @@
             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 getKeyFromPool(bool internal, CPubKey &pub_key) override {
             return m_wallet.GetKeyFromPool(pub_key, internal);
         }
diff --git a/src/qt/bitcoin.cpp b/src/qt/bitcoin.cpp
--- a/src/qt/bitcoin.cpp
+++ b/src/qt/bitcoin.cpp
@@ -486,11 +486,12 @@
             fFirstWallet = false;
         }
 
-        connect(walletModel,
-                SIGNAL(coinsSent(CWallet *, SendCoinsRecipient, QByteArray)),
-                paymentServer,
-                SLOT(fetchPaymentACK(CWallet *, const SendCoinsRecipient &,
-                                     QByteArray)));
+        connect(
+            walletModel,
+            SIGNAL(coinsSent(WalletModel *, SendCoinsRecipient, QByteArray)),
+            paymentServer,
+            SLOT(fetchPaymentACK(WalletModel *, const SendCoinsRecipient &,
+                                 QByteArray)));
 
         m_wallet_models.push_back(walletModel);
     }
@@ -702,7 +703,7 @@
     }
 #ifdef ENABLE_WALLET
     // Parse URIs on command line -- this can affect Params()
-    PaymentServer::ipcParseCommandLine(argc, argv);
+    PaymentServer::ipcParseCommandLine(*node, argc, argv);
 #endif
 
     QScopedPointer<const NetworkStyle> networkStyle(NetworkStyle::instantiate(
diff --git a/src/qt/paymentserver.h b/src/qt/paymentserver.h
--- a/src/qt/paymentserver.h
+++ b/src/qt/paymentserver.h
@@ -28,16 +28,14 @@
 // to the server.
 //
 
-#include "paymentrequestplus.h"
-#include "walletmodel.h"
+#include <qt/paymentrequestplus.h>
+#include <qt/walletmodel.h>
 
 #include <QObject>
 #include <QString>
 
 class OptionsModel;
 
-class CWallet;
-
 QT_BEGIN_NAMESPACE
 class QApplication;
 class QByteArray;
@@ -57,7 +55,8 @@
 public:
     // Parse URIs on command line
     // Returns false on error
-    static void ipcParseCommandLine(int argc, char *argv[]);
+    static void ipcParseCommandLine(interfaces::Node &node, int argc,
+                                    char *argv[]);
 
     // Returns true if there were URIs on the command line which were
     // successfully sent to an already-running process.
@@ -83,7 +82,8 @@
     void setOptionsModel(OptionsModel *optionsModel);
 
     // Verify that the payment request network matches the client network
-    static bool verifyNetwork(const payments::PaymentDetails &requestDetails);
+    static bool verifyNetwork(interfaces::Node &node,
+                              const payments::PaymentDetails &requestDetails);
     // Verify if the payment request is expired
     static bool verifyExpired(const payments::PaymentDetails &requestDetails);
     // Verify the payment request size is valid as per BIP70
@@ -108,7 +108,8 @@
     void uiReady();
 
     // Submit Payment message to a merchant, get back PaymentACK:
-    void fetchPaymentACK(CWallet *wallet, const SendCoinsRecipient &recipient,
+    void fetchPaymentACK(WalletModel *walletModel,
+                         const SendCoinsRecipient &recipient,
                          QByteArray transaction);
 
     // Handle an incoming URI, URI with local file scheme or file
diff --git a/src/qt/paymentserver.cpp b/src/qt/paymentserver.cpp
--- a/src/qt/paymentserver.cpp
+++ b/src/qt/paymentserver.cpp
@@ -2,21 +2,19 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
-#include "paymentserver.h"
-
-#include "bitcoinunits.h"
-#include "guiutil.h"
-#include "optionsmodel.h"
-
-#include "chainparams.h"
-#include "config.h"
-#include "dstencode.h"
-#include "policy/policy.h"
-#include "ui_interface.h"
-#include "util.h"
-#include "wallet/wallet.h"
-
-#include <cstdlib>
+#include <qt/paymentserver.h>
+
+#include <chainparams.h>
+#include <config.h>
+#include <dstencode.h>
+#include <interfaces/node.h>
+#include <policy/policy.h>
+#include <qt/bitcoinunits.h>
+#include <qt/guiutil.h>
+#include <qt/optionsmodel.h>
+#include <ui_interface.h>
+#include <util.h>
+#include <wallet/wallet.h>
 
 #include <openssl/x509_vfy.h>
 
@@ -42,6 +40,8 @@
 #include <QTextDocument>
 #include <QUrlQuery>
 
+#include <cstdlib>
+
 const int BITCOIN_IPC_CONNECT_TIMEOUT = 1000; // milliseconds
 // BIP70 payment protocol messages
 const char *BIP70_MESSAGE_PAYMENTACK = "PaymentACK";
@@ -223,7 +223,8 @@
 // Warning: ipcSendCommandLine() is called early in init, so don't use "Q_EMIT
 // message()", but "QMessageBox::"!
 //
-void PaymentServer::ipcParseCommandLine(int argc, char *argv[]) {
+void PaymentServer::ipcParseCommandLine(interfaces::Node &node, int argc,
+                                        char *argv[]) {
     std::array<const std::string *, 3> networks = {
         {&CBaseChainParams::MAIN, &CBaseChainParams::TESTNET,
          &CBaseChainParams::REGTEST}};
@@ -286,7 +287,7 @@
     }
 
     if (chosenNetwork) {
-        SelectParams(*chosenNetwork);
+        node.selectParams(*chosenNetwork);
     }
 }
 
@@ -566,7 +567,7 @@
 
     if (request.IsInitialized()) {
         // Payment request network matches client network?
-        if (!verifyNetwork(request.getDetails())) {
+        if (!verifyNetwork(optionsModel->node(), request.getDetails())) {
             Q_EMIT message(
                 tr("Payment request rejected"),
                 tr("Payment request network doesn't match client network."),
@@ -633,7 +634,7 @@
 
         // Extract and check amounts
         CTxOut txOut(Amount(sendingTo.second), sendingTo.first);
-        if (txOut.IsDust(dustRelayFee)) {
+        if (txOut.IsDust(optionsModel->node().getDustRelayFee())) {
             Q_EMIT message(
                 tr("Payment request error"),
                 tr("Requested payment amount of %1 is too small (considered "
@@ -681,7 +682,7 @@
     netManager->get(netRequest);
 }
 
-void PaymentServer::fetchPaymentACK(CWallet *wallet,
+void PaymentServer::fetchPaymentACK(WalletModel *walletModel,
                                     const SendCoinsRecipient &recipient,
                                     QByteArray transaction) {
     const payments::PaymentDetails &details =
@@ -705,16 +706,18 @@
     // Create a new refund address, or re-use:
     std::string label =
         tr("Refund from %1").arg(recipient.authenticatedMerchant).toStdString();
-    std::set<CTxDestination> refundAddresses = wallet->GetLabelAddresses(label);
+    std::set<CTxDestination> refundAddresses =
+        walletModel->wallet().getLabelAddresses(label);
     if (!refundAddresses.empty()) {
         CScript s = GetScriptForDestination(*refundAddresses.begin());
         payments::Output *refund_to = payment.add_refund_to();
         refund_to->set_script(&s[0], s.size());
     } else {
         CPubKey newKey;
-        if (wallet->GetKeyFromPool(newKey)) {
+        if (walletModel->wallet().getKeyFromPool(false /* internal */,
+                                                 newKey)) {
             CKeyID keyID = newKey.GetID();
-            wallet->SetAddressBook(keyID, label, "refund");
+            walletModel->wallet().setAddressBook(keyID, label, "refund");
 
             CScript s = GetScriptForDestination(keyID);
             payments::Output *refund_to = payment.add_refund_to();
@@ -823,15 +826,14 @@
 }
 
 bool PaymentServer::verifyNetwork(
-    const payments::PaymentDetails &requestDetails) {
-    bool fVerified = requestDetails.network() == Params().NetworkIDString();
+    interfaces::Node &node, const payments::PaymentDetails &requestDetails) {
+    bool fVerified = requestDetails.network() == node.getNetwork();
     if (!fVerified) {
         qWarning() << QString("PaymentServer::%1: Payment request network "
                               "\"%2\" doesn't match client network \"%3\".")
                           .arg(__func__)
                           .arg(QString::fromStdString(requestDetails.network()))
-                          .arg(QString::fromStdString(
-                              Params().NetworkIDString()));
+                          .arg(QString::fromStdString(node.getNetwork()));
     }
     return fVerified;
 }
diff --git a/src/qt/test/paymentservertests.cpp b/src/qt/test/paymentservertests.cpp
--- a/src/qt/test/paymentservertests.cpp
+++ b/src/qt/test/paymentservertests.cpp
@@ -147,7 +147,7 @@
     // Ensure the request is initialized, because network "main" is default,
     // even for uninizialized payment requests and that will fail our test here.
     QVERIFY(r.paymentRequest.IsInitialized());
-    QCOMPARE(PaymentServer::verifyNetwork(r.paymentRequest.getDetails()),
+    QCOMPARE(PaymentServer::verifyNetwork(*node, r.paymentRequest.getDetails()),
              false);
 
     // Expired payment request (expires is set to 1 = 1970-01-01 00:00:01):
diff --git a/src/qt/walletmodel.h b/src/qt/walletmodel.h
--- a/src/qt/walletmodel.h
+++ b/src/qt/walletmodel.h
@@ -271,7 +271,7 @@
                  unsigned int style);
 
     // Coins sent: from wallet, to recipient, in (serialized) transaction:
-    void coinsSent(CWallet *wallet, SendCoinsRecipient recipient,
+    void coinsSent(WalletModel *wallet, SendCoinsRecipient recipient,
                    QByteArray transaction);
 
     // Show progress dialog e.g. for rescan
diff --git a/src/qt/walletmodel.cpp b/src/qt/walletmodel.cpp
--- a/src/qt/walletmodel.cpp
+++ b/src/qt/walletmodel.cpp
@@ -287,7 +287,7 @@
                 m_wallet->setAddressBook(dest, strLabel, "");
             }
         }
-        Q_EMIT coinsSent(cwallet, rcp, transaction_array);
+        Q_EMIT coinsSent(this, rcp, transaction_array);
     }
 
     // update balance immediately, otherwise there could be a short noticeable