diff --git a/src/core_write.cpp b/src/core_write.cpp
--- a/src/core_write.cpp
+++ b/src/core_write.cpp
@@ -189,6 +189,8 @@
     entry.pushKV("txid", tx.GetId().GetHex());
     entry.pushKV("hash", tx.GetHash().GetHex());
     entry.pushKV("version", tx.nVersion);
+    entry.pushKV("size",
+                 (int)::GetSerializeSize(tx, SER_NETWORK, PROTOCOL_VERSION));
     entry.pushKV("locktime", (int64_t)tx.nLockTime);
 
     UniValue vin(UniValue::VARR);
diff --git a/src/rest.cpp b/src/rest.cpp
--- a/src/rest.cpp
+++ b/src/rest.cpp
@@ -6,6 +6,7 @@
 #include "chain.h"
 #include "chainparams.h"
 #include "config.h"
+#include "core_io.h"
 #include "httpserver.h"
 #include "primitives/block.h"
 #include "primitives/transaction.h"
@@ -430,7 +431,7 @@
 
         case RF_JSON: {
             UniValue objTx(UniValue::VOBJ);
-            TxToJSON(config, *tx, hashBlock, objTx);
+            TxToUniv(*tx, hashBlock, objTx);
             std::string strJSON = objTx.write() + "\n";
             req->WriteHeader("Content-Type", "application/json");
             req->WriteReply(HTTP_OK, strJSON);
@@ -645,7 +646,7 @@
 
                 // include the script in a json output
                 UniValue o(UniValue::VOBJ);
-                ScriptPubKeyToJSON(config, coin.out.scriptPubKey, o, true);
+                ScriptPubKeyToUniv(coin.out.scriptPubKey, o, true);
                 utxo.pushKV("scriptPubKey", o);
                 utxos.push_back(utxo);
             }
diff --git a/src/rpc/blockchain.cpp b/src/rpc/blockchain.cpp
--- a/src/rpc/blockchain.cpp
+++ b/src/rpc/blockchain.cpp
@@ -12,11 +12,11 @@
 #include "coins.h"
 #include "config.h"
 #include "consensus/validation.h"
+#include "core_io.h"
 #include "hash.h"
 #include "policy/policy.h"
 #include "primitives/transaction.h"
 #include "rpc/server.h"
-#include "rpc/tojson.h"
 #include "streams.h"
 #include "sync.h"
 #include "txdb.h"
@@ -118,7 +118,7 @@
     for (const auto &tx : block.vtx) {
         if (txDetails) {
             UniValue objTx(UniValue::VOBJ);
-            TxToJSON(config, *tx, uint256(), objTx);
+            TxToUniv(*tx, uint256(), objTx);
             txs.push_back(objTx);
         } else {
             txs.push_back(tx->GetId().GetHex());
@@ -1147,7 +1147,7 @@
     }
     ret.pushKV("value", ValueFromAmount(coin.GetTxOut().nValue));
     UniValue o(UniValue::VOBJ);
-    ScriptPubKeyToJSON(config, coin.GetTxOut().scriptPubKey, o, true);
+    ScriptPubKeyToUniv(coin.GetTxOut().scriptPubKey, o, true);
     ret.pushKV("scriptPubKey", o);
     ret.pushKV("coinbase", coin.IsCoinBase());
 
diff --git a/src/rpc/rawtransaction.cpp b/src/rpc/rawtransaction.cpp
--- a/src/rpc/rawtransaction.cpp
+++ b/src/rpc/rawtransaction.cpp
@@ -36,93 +36,14 @@
 
 #include <univalue.h>
 
-void ScriptPubKeyToJSON(const Config &config, const CScript &scriptPubKey,
-                        UniValue &out, bool fIncludeHex) {
-    txnouttype type;
-    std::vector<CTxDestination> addresses;
-    int nRequired;
-
-    out.pushKV("asm", ScriptToAsmStr(scriptPubKey));
-    if (fIncludeHex) {
-        out.pushKV("hex", HexStr(scriptPubKey.begin(), scriptPubKey.end()));
-    }
-
-    if (!ExtractDestinations(scriptPubKey, type, addresses, nRequired)) {
-        out.pushKV("type", GetTxnOutputType(type));
-        return;
-    }
-
-    out.pushKV("reqSigs", nRequired);
-    out.pushKV("type", GetTxnOutputType(type));
-
-    UniValue a(UniValue::VARR);
-    for (const CTxDestination &addr : addresses) {
-        a.push_back(EncodeDestination(addr));
-    }
-
-    out.pushKV("addresses", a);
-}
-
-void TxToJSON(const Config &config, const CTransaction &tx,
-              const uint256 hashBlock, UniValue &entry) {
-    entry.pushKV("txid", tx.GetId().GetHex());
-    entry.pushKV("hash", tx.GetHash().GetHex());
-    entry.pushKV("size",
-                 int(::GetSerializeSize(tx, SER_NETWORK, PROTOCOL_VERSION)));
-    entry.pushKV("version", tx.nVersion);
-    entry.pushKV("locktime", int64_t(tx.nLockTime));
-
-    UniValue vin(UniValue::VARR);
-    for (unsigned int i = 0; i < tx.vin.size(); i++) {
-        const CTxIn &txin = tx.vin[i];
-        UniValue in(UniValue::VOBJ);
-        if (tx.IsCoinBase()) {
-            in.pushKV("coinbase",
-                      HexStr(txin.scriptSig.begin(), txin.scriptSig.end()));
-        } else {
-            in.pushKV("txid", txin.prevout.GetTxId().GetHex());
-            in.pushKV("vout", int64_t(txin.prevout.GetN()));
-            UniValue o(UniValue::VOBJ);
-            o.pushKV("asm", ScriptToAsmStr(txin.scriptSig, true));
-            o.pushKV("hex",
-                     HexStr(txin.scriptSig.begin(), txin.scriptSig.end()));
-            in.pushKV("scriptSig", o);
-        }
-
-        in.pushKV("sequence", int64_t(txin.nSequence));
-        vin.push_back(in);
-    }
-
-    entry.pushKV("vin", vin);
-    UniValue vout(UniValue::VARR);
-    for (unsigned int i = 0; i < tx.vout.size(); i++) {
-        const CTxOut &txout = tx.vout[i];
-        UniValue out(UniValue::VOBJ);
-        out.pushKV("value", ValueFromAmount(txout.nValue));
-        out.pushKV("n", int64_t(i));
-        UniValue o(UniValue::VOBJ);
-        ScriptPubKeyToJSON(config, txout.scriptPubKey, o, true);
-        out.pushKV("scriptPubKey", o);
-        vout.push_back(out);
-    }
-
-    entry.pushKV("vout", vout);
-
-    if (!hashBlock.IsNull()) {
-        entry.pushKV("blockhash", hashBlock.GetHex());
-        BlockMap::iterator mi = mapBlockIndex.find(hashBlock);
-        if (mi != mapBlockIndex.end() && (*mi).second) {
-            CBlockIndex *pindex = (*mi).second;
-            if (chainActive.Contains(pindex)) {
-                entry.pushKV("confirmations",
-                             1 + chainActive.Height() - pindex->nHeight);
-                entry.pushKV("time", pindex->GetBlockTime());
-                entry.pushKV("blocktime", pindex->GetBlockTime());
-            } else {
-                entry.pushKV("confirmations", 0);
-            }
-        }
-    }
+void TxToJSON(const CTransaction &tx, const uint256 hashBlock,
+              UniValue &entry) {
+    // Call into TxToUniv() in bitcoin-common to decode the transaction hex.
+    //
+    // Blockchain contextual information (confirmations and blocktime) is not
+    // available to code in bitcoin-common, so we query them here and push the
+    // data into the returned UniValue.
+    TxToUniv(tx, uint256(), entry);
 }
 
 static UniValue getrawtransaction(const Config &config,
@@ -252,7 +173,7 @@
 
     UniValue result(UniValue::VOBJ);
     result.pushKV("hex", strHex);
-    TxToJSON(config, *tx, hashBlock, result);
+    TxToUniv(*tx, hashBlock, result);
     return result;
 }
 
@@ -649,7 +570,7 @@
     }
 
     UniValue result(UniValue::VOBJ);
-    TxToJSON(config, CTransaction(std::move(mtx)), uint256(), result);
+    TxToUniv(CTransaction(std::move(mtx)), uint256(), result);
 
     return result;
 }
@@ -693,7 +614,7 @@
         // Empty scripts are valid.
     }
 
-    ScriptPubKeyToJSON(config, script, r, false);
+    ScriptPubKeyToUniv(script, r, false);
 
     UniValue type;
     type = find_value(r, "type");
diff --git a/src/rpc/tojson.h b/src/rpc/tojson.h
--- a/src/rpc/tojson.h
+++ b/src/rpc/tojson.h
@@ -11,8 +11,6 @@
 
 class CScript;
 
-void ScriptPubKeyToJSON(const Config &config, const CScript &scriptPubKey,
-                        UniValue &out, bool fIncludeHex);
 void TxToJSON(const Config &config, const CTransaction &tx,
               const uint256 hashBlock, UniValue &entry);
 UniValue blockToJSON(const Config &config, const CBlock &block,
diff --git a/test/util/data/blanktxv1.json b/test/util/data/blanktxv1.json
--- a/test/util/data/blanktxv1.json
+++ b/test/util/data/blanktxv1.json
@@ -2,6 +2,7 @@
     "txid": "d21633ba23f70118185227be58a63527675641ad37967e2aa461559f577aec43",
     "hash": "d21633ba23f70118185227be58a63527675641ad37967e2aa461559f577aec43",
     "version": 1,
+    "size": 10,
     "locktime": 0,
     "vin": [
     ],
diff --git a/test/util/data/blanktxv2.json b/test/util/data/blanktxv2.json
--- a/test/util/data/blanktxv2.json
+++ b/test/util/data/blanktxv2.json
@@ -2,6 +2,7 @@
     "txid": "4ebd325a4b394cff8c57e8317ccf5a8d0e2bdf1b8526f8aad6c8e43d8240621a",
     "hash": "4ebd325a4b394cff8c57e8317ccf5a8d0e2bdf1b8526f8aad6c8e43d8240621a",
     "version": 2,
+    "size": 10,
     "locktime": 0,
     "vin": [
     ],
diff --git a/test/util/data/tt-delin1-out.json b/test/util/data/tt-delin1-out.json
--- a/test/util/data/tt-delin1-out.json
+++ b/test/util/data/tt-delin1-out.json
@@ -2,6 +2,7 @@
     "txid": "81b2035be1da1abe745c6141174a73d151009ec17b3d5ebffa2e177408c50dfd",
     "hash": "81b2035be1da1abe745c6141174a73d151009ec17b3d5ebffa2e177408c50dfd",
     "version": 1,
+    "size": 3040,
     "locktime": 0,
     "vin": [
         {
diff --git a/test/util/data/tt-delout1-out.json b/test/util/data/tt-delout1-out.json
--- a/test/util/data/tt-delout1-out.json
+++ b/test/util/data/tt-delout1-out.json
@@ -2,6 +2,7 @@
     "txid": "c46ccd75b5050e942b2e86a3648f843f525fe6fc000bf0534ba5973063354493",
     "hash": "c46ccd75b5050e942b2e86a3648f843f525fe6fc000bf0534ba5973063354493",
     "version": 1,
+    "size": 3155,
     "locktime": 0,
     "vin": [
         {
diff --git a/test/util/data/tt-locktime317000-out.json b/test/util/data/tt-locktime317000-out.json
--- a/test/util/data/tt-locktime317000-out.json
+++ b/test/util/data/tt-locktime317000-out.json
@@ -2,6 +2,7 @@
     "txid": "aded538f642c17e15f4d3306b8be7e1a4d1ae0c4616d641ab51ea09ba65e5cb5",
     "hash": "aded538f642c17e15f4d3306b8be7e1a4d1ae0c4616d641ab51ea09ba65e5cb5",
     "version": 1,
+    "size": 3189,
     "locktime": 317000,
     "vin": [
         {
diff --git a/test/util/data/txcreate1.json b/test/util/data/txcreate1.json
--- a/test/util/data/txcreate1.json
+++ b/test/util/data/txcreate1.json
@@ -2,6 +2,7 @@
     "txid": "fe7d174f42dce0cffa7a527e9bc8368956057619ec817648f6138b98f2533e8f",
     "hash": "fe7d174f42dce0cffa7a527e9bc8368956057619ec817648f6138b98f2533e8f",
     "version": 2,
+    "size": 201,
     "locktime": 0,
     "vin": [
         {
diff --git a/test/util/data/txcreate2.json b/test/util/data/txcreate2.json
--- a/test/util/data/txcreate2.json
+++ b/test/util/data/txcreate2.json
@@ -2,6 +2,7 @@
     "txid": "0481afb29931341d0d7861d8a2f6f26456fa042abf54a23e96440ed7946e0715",
     "hash": "0481afb29931341d0d7861d8a2f6f26456fa042abf54a23e96440ed7946e0715",
     "version": 2,
+    "size": 19,
     "locktime": 0,
     "vin": [
     ],
diff --git a/test/util/data/txcreatedata1.json b/test/util/data/txcreatedata1.json
--- a/test/util/data/txcreatedata1.json
+++ b/test/util/data/txcreatedata1.json
@@ -2,6 +2,7 @@
     "txid": "07894b4d12fe7853dd911402db1620920d261b9627c447f931417d330c25f06e",
     "hash": "07894b4d12fe7853dd911402db1620920d261b9627c447f931417d330c25f06e",
     "version": 1,
+    "size": 176,
     "locktime": 0,
     "vin": [
         {
diff --git a/test/util/data/txcreatedata2.json b/test/util/data/txcreatedata2.json
--- a/test/util/data/txcreatedata2.json
+++ b/test/util/data/txcreatedata2.json
@@ -2,6 +2,7 @@
     "txid": "c14b007fa3a6c1e7765919c1d14c1cfc2b8642c3a5d3be4b1fa8c4ccfec98bb0",
     "hash": "c14b007fa3a6c1e7765919c1d14c1cfc2b8642c3a5d3be4b1fa8c4ccfec98bb0",
     "version": 2,
+    "size": 176,
     "locktime": 0,
     "vin": [
         {
diff --git a/test/util/data/txcreatedata_seq0.json b/test/util/data/txcreatedata_seq0.json
--- a/test/util/data/txcreatedata_seq0.json
+++ b/test/util/data/txcreatedata_seq0.json
@@ -2,6 +2,7 @@
     "txid": "8df6ed527472542dd5e137c242a7c5a9f337ac34f7b257ae4af886aeaebb51b0",
     "hash": "8df6ed527472542dd5e137c242a7c5a9f337ac34f7b257ae4af886aeaebb51b0",
     "version": 2,
+    "size": 85,
     "locktime": 0,
     "vin": [
         {
diff --git a/test/util/data/txcreatedata_seq1.json b/test/util/data/txcreatedata_seq1.json
--- a/test/util/data/txcreatedata_seq1.json
+++ b/test/util/data/txcreatedata_seq1.json
@@ -2,6 +2,7 @@
     "txid": "c4dea671b0d7b48f8ab10bc46650e8329d3c5766931f548f513847a19f5ba75b",
     "hash": "c4dea671b0d7b48f8ab10bc46650e8329d3c5766931f548f513847a19f5ba75b",
     "version": 1,
+    "size": 126,
     "locktime": 0,
     "vin": [
         {
diff --git a/test/util/data/txcreatemultisig1.json b/test/util/data/txcreatemultisig1.json
--- a/test/util/data/txcreatemultisig1.json
+++ b/test/util/data/txcreatemultisig1.json
@@ -2,6 +2,7 @@
     "txid": "0d1d4edfc217d9db3ab6a9298f26a52eae3c52f55a6cb8ccbc14f7c727572894",
     "hash": "0d1d4edfc217d9db3ab6a9298f26a52eae3c52f55a6cb8ccbc14f7c727572894",
     "version": 1,
+    "size": 124,
     "locktime": 0,
     "vin": [
     ],
diff --git a/test/util/data/txcreatemultisig2.json b/test/util/data/txcreatemultisig2.json
--- a/test/util/data/txcreatemultisig2.json
+++ b/test/util/data/txcreatemultisig2.json
@@ -2,6 +2,7 @@
     "txid": "0d861f278a3b7bce7cb5a88d71e6e6a903336f95ad5a2c29b295b63835b6eee3",
     "hash": "0d861f278a3b7bce7cb5a88d71e6e6a903336f95ad5a2c29b295b63835b6eee3",
     "version": 1,
+    "size": 42,
     "locktime": 0,
     "vin": [
     ],
diff --git a/test/util/data/txcreateoutpubkey1.json b/test/util/data/txcreateoutpubkey1.json
--- a/test/util/data/txcreateoutpubkey1.json
+++ b/test/util/data/txcreateoutpubkey1.json
@@ -2,6 +2,7 @@
     "txid": "f42b38ac12e3fafc96ba1a9ba70cbfe326744aef75df5fb9db5d6e2855ca415f",
     "hash": "f42b38ac12e3fafc96ba1a9ba70cbfe326744aef75df5fb9db5d6e2855ca415f",
     "version": 1,
+    "size": 54,
     "locktime": 0,
     "vin": [
     ],
diff --git a/test/util/data/txcreatescript1.json b/test/util/data/txcreatescript1.json
--- a/test/util/data/txcreatescript1.json
+++ b/test/util/data/txcreatescript1.json
@@ -2,6 +2,7 @@
     "txid": "f0851b68202f736b792649cfc960259c2374badcb644ab20cac726b5f72f61c9",
     "hash": "f0851b68202f736b792649cfc960259c2374badcb644ab20cac726b5f72f61c9",
     "version": 1,
+    "size": 20,
     "locktime": 0,
     "vin": [
     ],
diff --git a/test/util/data/txcreatescript2.json b/test/util/data/txcreatescript2.json
--- a/test/util/data/txcreatescript2.json
+++ b/test/util/data/txcreatescript2.json
@@ -2,6 +2,7 @@
     "txid": "6e07a7cc075e0703f32ee8c4e5373fe654bfbc315148fda364e1be286ff290d0",
     "hash": "6e07a7cc075e0703f32ee8c4e5373fe654bfbc315148fda364e1be286ff290d0",
     "version": 1,
+    "size": 42,
     "locktime": 0,
     "vin": [
     ],
diff --git a/test/util/data/txcreatesignv1.json b/test/util/data/txcreatesignv1.json
--- a/test/util/data/txcreatesignv1.json
+++ b/test/util/data/txcreatesignv1.json
@@ -2,6 +2,7 @@
     "txid": "bea13b5f794dc351d1d890b525b0af423c49ab49c667c8fd95cbba2fb283cd5e",
     "hash": "bea13b5f794dc351d1d890b525b0af423c49ab49c667c8fd95cbba2fb283cd5e",
     "version": 1,
+    "size": 223,
     "locktime": 0,
     "vin": [
         {