scripted-diff: Use UniValue.pushKV instead of push_back(Pair())

-BEGIN VERIFY SCRIPT-
git grep -l "push_back(Pair" | xargs sed -i "s/push_back(Pair(\(.*\)));/pushKV(\1);/g"
-END VERIFY SCRIPT-

9 files changed, 410 insertions, 410 deletions

diff --git a/src/rest.cpp b/src/rest.cpp
index 30e481171f..eeeb3f5141 100644
--- a/src/rest.cpp
+++ b/src/rest.cpp
@@ -540,23 +540,23 @@ static bool rest_getutxos(HTTPRequest* req, const std::string& strURIPart)
 
         // pack in some essentials
         // use more or less the same output as mentioned in Bip64
-        objGetUTXOResponse.push_back(Pair("chainHeight", chainActive.Height()));
-        objGetUTXOResponse.push_back(Pair("chaintipHash", chainActive.Tip()->GetBlockHash().GetHex()));
-        objGetUTXOResponse.push_back(Pair("bitmap", bitmapStringRepresentation));
+        objGetUTXOResponse.pushKV("chainHeight", chainActive.Height());
+        objGetUTXOResponse.pushKV("chaintipHash", chainActive.Tip()->GetBlockHash().GetHex());
+        objGetUTXOResponse.pushKV("bitmap", bitmapStringRepresentation);
 
         UniValue utxos(UniValue::VARR);
         for (const CCoin& coin : outs) {
             UniValue utxo(UniValue::VOBJ);
-            utxo.push_back(Pair("height", (int32_t)coin.nHeight));
-            utxo.push_back(Pair("value", ValueFromAmount(coin.out.nValue)));
+            utxo.pushKV("height", (int32_t)coin.nHeight);
+            utxo.pushKV("value", ValueFromAmount(coin.out.nValue));
 
             // include the script in a json output
             UniValue o(UniValue::VOBJ);
             ScriptPubKeyToUniv(coin.out.scriptPubKey, o, true);
-            utxo.push_back(Pair("scriptPubKey", o));
+            utxo.pushKV("scriptPubKey", o);
             utxos.push_back(utxo);
         }
-        objGetUTXOResponse.push_back(Pair("utxos", utxos));
+        objGetUTXOResponse.pushKV("utxos", utxos);
 
         // return json string
         std::string strJSON = objGetUTXOResponse.write() + "\n";
diff --git a/src/rpc/blockchain.cpp b/src/rpc/blockchain.cpp
index 4276ad9eeb..189da6ae48 100644
--- a/src/rpc/blockchain.cpp
+++ b/src/rpc/blockchain.cpp
@@ -88,28 +88,28 @@ UniValue blockheaderToJSON(const CBlockIndex* blockindex)
 {
     AssertLockHeld(cs_main);
     UniValue result(UniValue::VOBJ);
-    result.push_back(Pair("hash", blockindex->GetBlockHash().GetHex()));
+    result.pushKV("hash", blockindex->GetBlockHash().GetHex());
     int confirmations = -1;
     // Only report confirmations if the block is on the main chain
     if (chainActive.Contains(blockindex))
         confirmations = chainActive.Height() - blockindex->nHeight + 1;
-    result.push_back(Pair("confirmations", confirmations));
-    result.push_back(Pair("height", blockindex->nHeight));
-    result.push_back(Pair("version", blockindex->nVersion));
-    result.push_back(Pair("versionHex", strprintf("%08x", blockindex->nVersion)));
-    result.push_back(Pair("merkleroot", blockindex->hashMerkleRoot.GetHex()));
-    result.push_back(Pair("time", (int64_t)blockindex->nTime));
-    result.push_back(Pair("mediantime", (int64_t)blockindex->GetMedianTimePast()));
-    result.push_back(Pair("nonce", (uint64_t)blockindex->nNonce));
-    result.push_back(Pair("bits", strprintf("%08x", blockindex->nBits)));
-    result.push_back(Pair("difficulty", GetDifficulty(blockindex)));
-    result.push_back(Pair("chainwork", blockindex->nChainWork.GetHex()));
+    result.pushKV("confirmations", confirmations);
+    result.pushKV("height", blockindex->nHeight);
+    result.pushKV("version", blockindex->nVersion);
+    result.pushKV("versionHex", strprintf("%08x", blockindex->nVersion));
+    result.pushKV("merkleroot", blockindex->hashMerkleRoot.GetHex());
+    result.pushKV("time", (int64_t)blockindex->nTime);
+    result.pushKV("mediantime", (int64_t)blockindex->GetMedianTimePast());
+    result.pushKV("nonce", (uint64_t)blockindex->nNonce);
+    result.pushKV("bits", strprintf("%08x", blockindex->nBits));
+    result.pushKV("difficulty", GetDifficulty(blockindex));
+    result.pushKV("chainwork", blockindex->nChainWork.GetHex());
 
     if (blockindex->pprev)
-        result.push_back(Pair("previousblockhash", blockindex->pprev->GetBlockHash().GetHex()));
+        result.pushKV("previousblockhash", blockindex->pprev->GetBlockHash().GetHex());
     CBlockIndex *pnext = chainActive.Next(blockindex);
     if (pnext)
-        result.push_back(Pair("nextblockhash", pnext->GetBlockHash().GetHex()));
+        result.pushKV("nextblockhash", pnext->GetBlockHash().GetHex());
     return result;
 }
 
@@ -117,19 +117,19 @@ UniValue blockToJSON(const CBlock& block, const CBlockIndex* blockindex, bool tx
 {
     AssertLockHeld(cs_main);
     UniValue result(UniValue::VOBJ);
-    result.push_back(Pair("hash", blockindex->GetBlockHash().GetHex()));
+    result.pushKV("hash", blockindex->GetBlockHash().GetHex());
     int confirmations = -1;
     // Only report confirmations if the block is on the main chain
     if (chainActive.Contains(blockindex))
         confirmations = chainActive.Height() - blockindex->nHeight + 1;
-    result.push_back(Pair("confirmations", confirmations));
-    result.push_back(Pair("strippedsize", (int)::GetSerializeSize(block, SER_NETWORK, PROTOCOL_VERSION | SERIALIZE_TRANSACTION_NO_WITNESS)));
-    result.push_back(Pair("size", (int)::GetSerializeSize(block, SER_NETWORK, PROTOCOL_VERSION)));
-    result.push_back(Pair("weight", (int)::GetBlockWeight(block)));
-    result.push_back(Pair("height", blockindex->nHeight));
-    result.push_back(Pair("version", block.nVersion));
-    result.push_back(Pair("versionHex", strprintf("%08x", block.nVersion)));
-    result.push_back(Pair("merkleroot", block.hashMerkleRoot.GetHex()));
+    result.pushKV("confirmations", confirmations);
+    result.pushKV("strippedsize", (int)::GetSerializeSize(block, SER_NETWORK, PROTOCOL_VERSION | SERIALIZE_TRANSACTION_NO_WITNESS));
+    result.pushKV("size", (int)::GetSerializeSize(block, SER_NETWORK, PROTOCOL_VERSION));
+    result.pushKV("weight", (int)::GetBlockWeight(block));
+    result.pushKV("height", blockindex->nHeight);
+    result.pushKV("version", block.nVersion);
+    result.pushKV("versionHex", strprintf("%08x", block.nVersion));
+    result.pushKV("merkleroot", block.hashMerkleRoot.GetHex());
     UniValue txs(UniValue::VARR);
     for(const auto& tx : block.vtx)
     {
@@ -142,19 +142,19 @@ UniValue blockToJSON(const CBlock& block, const CBlockIndex* blockindex, bool tx
         else
             txs.push_back(tx->GetHash().GetHex());
     }
-    result.push_back(Pair("tx", txs));
-    result.push_back(Pair("time", block.GetBlockTime()));
-    result.push_back(Pair("mediantime", (int64_t)blockindex->GetMedianTimePast()));
-    result.push_back(Pair("nonce", (uint64_t)block.nNonce));
-    result.push_back(Pair("bits", strprintf("%08x", block.nBits)));
-    result.push_back(Pair("difficulty", GetDifficulty(blockindex)));
-    result.push_back(Pair("chainwork", blockindex->nChainWork.GetHex()));
+    result.pushKV("tx", txs);
+    result.pushKV("time", block.GetBlockTime());
+    result.pushKV("mediantime", (int64_t)blockindex->GetMedianTimePast());
+    result.pushKV("nonce", (uint64_t)block.nNonce);
+    result.pushKV("bits", strprintf("%08x", block.nBits));
+    result.pushKV("difficulty", GetDifficulty(blockindex));
+    result.pushKV("chainwork", blockindex->nChainWork.GetHex());
 
     if (blockindex->pprev)
-        result.push_back(Pair("previousblockhash", blockindex->pprev->GetBlockHash().GetHex()));
+        result.pushKV("previousblockhash", blockindex->pprev->GetBlockHash().GetHex());
     CBlockIndex *pnext = chainActive.Next(blockindex);
     if (pnext)
-        result.push_back(Pair("nextblockhash", pnext->GetBlockHash().GetHex()));
+        result.pushKV("nextblockhash", pnext->GetBlockHash().GetHex());
     return result;
 }
 
@@ -235,8 +235,8 @@ UniValue waitfornewblock(const JSONRPCRequest& request)
         block = latestblock;
     }
     UniValue ret(UniValue::VOBJ);
-    ret.push_back(Pair("hash", block.hash.GetHex()));
-    ret.push_back(Pair("height", block.height));
+    ret.pushKV("hash", block.hash.GetHex());
+    ret.pushKV("height", block.height);
     return ret;
 }
 
@@ -277,8 +277,8 @@ UniValue waitforblock(const JSONRPCRequest& request)
     }
 
     UniValue ret(UniValue::VOBJ);
-    ret.push_back(Pair("hash", block.hash.GetHex()));
-    ret.push_back(Pair("height", block.height));
+    ret.pushKV("hash", block.hash.GetHex());
+    ret.pushKV("height", block.height);
     return ret;
 }
 
@@ -319,8 +319,8 @@ UniValue waitforblockheight(const JSONRPCRequest& request)
         block = latestblock;
     }
     UniValue ret(UniValue::VOBJ);
-    ret.push_back(Pair("hash", block.hash.GetHex()));
-    ret.push_back(Pair("height", block.height));
+    ret.pushKV("hash", block.hash.GetHex());
+    ret.pushKV("height", block.height);
     return ret;
 }
 
@@ -379,18 +379,18 @@ void entryToJSON(UniValue &info, const CTxMemPoolEntry &e)
 {
     AssertLockHeld(mempool.cs);
 
-    info.push_back(Pair("size", (int)e.GetTxSize()));
-    info.push_back(Pair("fee", ValueFromAmount(e.GetFee())));
-    info.push_back(Pair("modifiedfee", ValueFromAmount(e.GetModifiedFee())));
-    info.push_back(Pair("time", e.GetTime()));
-    info.push_back(Pair("height", (int)e.GetHeight()));
-    info.push_back(Pair("descendantcount", e.GetCountWithDescendants()));
-    info.push_back(Pair("descendantsize", e.GetSizeWithDescendants()));
-    info.push_back(Pair("descendantfees", e.GetModFeesWithDescendants()));
-    info.push_back(Pair("ancestorcount", e.GetCountWithAncestors()));
-    info.push_back(Pair("ancestorsize", e.GetSizeWithAncestors()));
-    info.push_back(Pair("ancestorfees", e.GetModFeesWithAncestors()));
-    info.push_back(Pair("wtxid", mempool.vTxHashes[e.vTxHashesIdx].first.ToString()));
+    info.pushKV("size", (int)e.GetTxSize());
+    info.pushKV("fee", ValueFromAmount(e.GetFee()));
+    info.pushKV("modifiedfee", ValueFromAmount(e.GetModifiedFee()));
+    info.pushKV("time", e.GetTime());
+    info.pushKV("height", (int)e.GetHeight());
+    info.pushKV("descendantcount", e.GetCountWithDescendants());
+    info.pushKV("descendantsize", e.GetSizeWithDescendants());
+    info.pushKV("descendantfees", e.GetModFeesWithDescendants());
+    info.pushKV("ancestorcount", e.GetCountWithAncestors());
+    info.pushKV("ancestorsize", e.GetSizeWithAncestors());
+    info.pushKV("ancestorfees", e.GetModFeesWithAncestors());
+    info.pushKV("wtxid", mempool.vTxHashes[e.vTxHashesIdx].first.ToString());
     const CTransaction& tx = e.GetTx();
     std::set<std::string> setDepends;
     for (const CTxIn& txin : tx.vin)
@@ -405,7 +405,7 @@ void entryToJSON(UniValue &info, const CTxMemPoolEntry &e)
         depends.push_back(dep);
     }
 
-    info.push_back(Pair("depends", depends));
+    info.pushKV("depends", depends);
 }
 
 UniValue mempoolToJSON(bool fVerbose)
@@ -419,7 +419,7 @@ UniValue mempoolToJSON(bool fVerbose)
             const uint256& hash = e.GetTx().GetHash();
             UniValue info(UniValue::VOBJ);
             entryToJSON(info, e);
-            o.push_back(Pair(hash.ToString(), info));
+            o.pushKV(hash.ToString(), info);
         }
         return o;
     }
@@ -526,7 +526,7 @@ UniValue getmempoolancestors(const JSONRPCRequest& request)
             const uint256& _hash = e.GetTx().GetHash();
             UniValue info(UniValue::VOBJ);
             entryToJSON(info, e);
-            o.push_back(Pair(_hash.ToString(), info));
+            o.pushKV(_hash.ToString(), info);
         }
         return o;
     }
@@ -590,7 +590,7 @@ UniValue getmempooldescendants(const JSONRPCRequest& request)
             const uint256& _hash = e.GetTx().GetHash();
             UniValue info(UniValue::VOBJ);
             entryToJSON(info, e);
-            o.push_back(Pair(_hash.ToString(), info));
+            o.pushKV(_hash.ToString(), info);
         }
         return o;
     }
@@ -952,14 +952,14 @@ UniValue gettxoutsetinfo(const JSONRPCRequest& request)
     CCoinsStats stats;
     FlushStateToDisk();
     if (GetUTXOStats(pcoinsdbview.get(), stats)) {
-        ret.push_back(Pair("height", (int64_t)stats.nHeight));
-        ret.push_back(Pair("bestblock", stats.hashBlock.GetHex()));
-        ret.push_back(Pair("transactions", (int64_t)stats.nTransactions));
-        ret.push_back(Pair("txouts", (int64_t)stats.nTransactionOutputs));
-        ret.push_back(Pair("bogosize", (int64_t)stats.nBogoSize));
-        ret.push_back(Pair("hash_serialized_2", stats.hashSerialized.GetHex()));
-        ret.push_back(Pair("disk_size", stats.nDiskSize));
-        ret.push_back(Pair("total_amount", ValueFromAmount(stats.nTotalAmount)));
+        ret.pushKV("height", (int64_t)stats.nHeight);
+        ret.pushKV("bestblock", stats.hashBlock.GetHex());
+        ret.pushKV("transactions", (int64_t)stats.nTransactions);
+        ret.pushKV("txouts", (int64_t)stats.nTransactionOutputs);
+        ret.pushKV("bogosize", (int64_t)stats.nBogoSize);
+        ret.pushKV("hash_serialized_2", stats.hashSerialized.GetHex());
+        ret.pushKV("disk_size", stats.nDiskSize);
+        ret.pushKV("total_amount", ValueFromAmount(stats.nTotalAmount));
     } else {
         throw JSONRPCError(RPC_INTERNAL_ERROR, "Unable to read UTXO set");
     }
@@ -1031,17 +1031,17 @@ UniValue gettxout(const JSONRPCRequest& request)
 
     BlockMap::iterator it = mapBlockIndex.find(pcoinsTip->GetBestBlock());
     CBlockIndex *pindex = it->second;
-    ret.push_back(Pair("bestblock", pindex->GetBlockHash().GetHex()));
+    ret.pushKV("bestblock", pindex->GetBlockHash().GetHex());
     if (coin.nHeight == MEMPOOL_HEIGHT) {
-        ret.push_back(Pair("confirmations", 0));
+        ret.pushKV("confirmations", 0);
     } else {
-        ret.push_back(Pair("confirmations", (int64_t)(pindex->nHeight - coin.nHeight + 1)));
+        ret.pushKV("confirmations", (int64_t)(pindex->nHeight - coin.nHeight + 1));
     }
-    ret.push_back(Pair("value", ValueFromAmount(coin.out.nValue)));
+    ret.pushKV("value", ValueFromAmount(coin.out.nValue));
     UniValue o(UniValue::VOBJ);
     ScriptPubKeyToUniv(coin.out.scriptPubKey, o, true);
-    ret.push_back(Pair("scriptPubKey", o));
-    ret.push_back(Pair("coinbase", (bool)coin.fCoinBase));
+    ret.pushKV("scriptPubKey", o);
+    ret.pushKV("coinbase", (bool)coin.fCoinBase);
 
     return ret;
 }
@@ -1091,16 +1091,16 @@ static UniValue SoftForkMajorityDesc(int version, CBlockIndex* pindex, const Con
             activated = pindex->nHeight >= consensusParams.BIP65Height;
             break;
     }
-    rv.push_back(Pair("status", activated));
+    rv.pushKV("status", activated);
     return rv;
 }
 
 static UniValue SoftForkDesc(const std::string &name, int version, CBlockIndex* pindex, const Consensus::Params& consensusParams)
 {
     UniValue rv(UniValue::VOBJ);
-    rv.push_back(Pair("id", name));
-    rv.push_back(Pair("version", version));
-    rv.push_back(Pair("reject", SoftForkMajorityDesc(version, pindex, consensusParams)));
+    rv.pushKV("id", name);
+    rv.pushKV("version", version);
+    rv.pushKV("reject", SoftForkMajorityDesc(version, pindex, consensusParams));
     return rv;
 }
 
@@ -1109,29 +1109,29 @@ static UniValue BIP9SoftForkDesc(const Consensus::Params& consensusParams, Conse
     UniValue rv(UniValue::VOBJ);
     const ThresholdState thresholdState = VersionBitsTipState(consensusParams, id);
     switch (thresholdState) {
-    case THRESHOLD_DEFINED: rv.push_back(Pair("status", "defined")); break;
-    case THRESHOLD_STARTED: rv.push_back(Pair("status", "started")); break;
-    case THRESHOLD_LOCKED_IN: rv.push_back(Pair("status", "locked_in")); break;
-    case THRESHOLD_ACTIVE: rv.push_back(Pair("status", "active")); break;
-    case THRESHOLD_FAILED: rv.push_back(Pair("status", "failed")); break;
+    case THRESHOLD_DEFINED: rv.pushKV("status", "defined"); break;
+    case THRESHOLD_STARTED: rv.pushKV("status", "started"); break;
+    case THRESHOLD_LOCKED_IN: rv.pushKV("status", "locked_in"); break;
+    case THRESHOLD_ACTIVE: rv.pushKV("status", "active"); break;
+    case THRESHOLD_FAILED: rv.pushKV("status", "failed"); break;
     }
     if (THRESHOLD_STARTED == thresholdState)
     {
-        rv.push_back(Pair("bit", consensusParams.vDeployments[id].bit));
+        rv.pushKV("bit", consensusParams.vDeployments[id].bit);
     }
-    rv.push_back(Pair("startTime", consensusParams.vDeployments[id].nStartTime));
-    rv.push_back(Pair("timeout", consensusParams.vDeployments[id].nTimeout));
-    rv.push_back(Pair("since", VersionBitsTipStateSinceHeight(consensusParams, id)));
+    rv.pushKV("startTime", consensusParams.vDeployments[id].nStartTime);
+    rv.pushKV("timeout", consensusParams.vDeployments[id].nTimeout);
+    rv.pushKV("since", VersionBitsTipStateSinceHeight(consensusParams, id));
     if (THRESHOLD_STARTED == thresholdState)
     {
         UniValue statsUV(UniValue::VOBJ);
         BIP9Stats statsStruct = VersionBitsTipStatistics(consensusParams, id);
-        statsUV.push_back(Pair("period", statsStruct.period));
-        statsUV.push_back(Pair("threshold", statsStruct.threshold));
-        statsUV.push_back(Pair("elapsed", statsStruct.elapsed));
-        statsUV.push_back(Pair("count", statsStruct.count));
-        statsUV.push_back(Pair("possible", statsStruct.possible));
-        rv.push_back(Pair("statistics", statsUV));
+        statsUV.pushKV("period", statsStruct.period);
+        statsUV.pushKV("threshold", statsStruct.threshold);
+        statsUV.pushKV("elapsed", statsStruct.elapsed);
+        statsUV.pushKV("count", statsStruct.count);
+        statsUV.pushKV("possible", statsStruct.possible);
+        rv.pushKV("statistics", statsUV);
     }
     return rv;
 }
@@ -1142,7 +1142,7 @@ void BIP9SoftForkDescPushBack(UniValue& bip9_softforks, const Consensus::Params&
     // A timeout value of 0 guarantees a softfork will never be activated.
     // This is used when softfork codes are merged without specifying the deployment schedule.
     if (consensusParams.vDeployments[id].nTimeout > 0)
-        bip9_softforks.push_back(Pair(VersionBitsDeploymentInfo[id].name, BIP9SoftForkDesc(consensusParams, id)));
+        bip9_softforks.pushKV(VersionBitsDeploymentInfo[id].name, BIP9SoftForkDesc(consensusParams, id));
 }
 
 UniValue getblockchaininfo(const JSONRPCRequest& request)
@@ -1202,17 +1202,17 @@ UniValue getblockchaininfo(const JSONRPCRequest& request)
     LOCK(cs_main);
 
     UniValue obj(UniValue::VOBJ);
-    obj.push_back(Pair("chain",                 Params().NetworkIDString()));
-    obj.push_back(Pair("blocks",                (int)chainActive.Height()));
-    obj.push_back(Pair("headers",               pindexBestHeader ? pindexBestHeader->nHeight : -1));
-    obj.push_back(Pair("bestblockhash",         chainActive.Tip()->GetBlockHash().GetHex()));
-    obj.push_back(Pair("difficulty",            (double)GetDifficulty()));
-    obj.push_back(Pair("mediantime",            (int64_t)chainActive.Tip()->GetMedianTimePast()));
-    obj.push_back(Pair("verificationprogress",  GuessVerificationProgress(Params().TxData(), chainActive.Tip())));
-    obj.push_back(Pair("initialblockdownload",  IsInitialBlockDownload()));
-    obj.push_back(Pair("chainwork",             chainActive.Tip()->nChainWork.GetHex()));
-    obj.push_back(Pair("size_on_disk",          CalculateCurrentUsage()));
-    obj.push_back(Pair("pruned",                fPruneMode));
+    obj.pushKV("chain",                 Params().NetworkIDString());
+    obj.pushKV("blocks",                (int)chainActive.Height());
+    obj.pushKV("headers",               pindexBestHeader ? pindexBestHeader->nHeight : -1);
+    obj.pushKV("bestblockhash",         chainActive.Tip()->GetBlockHash().GetHex());
+    obj.pushKV("difficulty",            (double)GetDifficulty());
+    obj.pushKV("mediantime",            (int64_t)chainActive.Tip()->GetMedianTimePast());
+    obj.pushKV("verificationprogress",  GuessVerificationProgress(Params().TxData(), chainActive.Tip()));
+    obj.pushKV("initialblockdownload",  IsInitialBlockDownload());
+    obj.pushKV("chainwork",             chainActive.Tip()->nChainWork.GetHex());
+    obj.pushKV("size_on_disk",          CalculateCurrentUsage());
+    obj.pushKV("pruned",                fPruneMode);
     if (fPruneMode) {
         CBlockIndex* block = chainActive.Tip();
         assert(block);
@@ -1220,13 +1220,13 @@ UniValue getblockchaininfo(const JSONRPCRequest& request)
             block = block->pprev;
         }
 
-        obj.push_back(Pair("pruneheight",        block->nHeight));
+        obj.pushKV("pruneheight",        block->nHeight);
 
         // if 0, execution bypasses the whole if block.
         bool automatic_pruning = (gArgs.GetArg("-prune", 0) != 1);
-        obj.push_back(Pair("automatic_pruning",  automatic_pruning));
+        obj.pushKV("automatic_pruning",  automatic_pruning);
         if (automatic_pruning) {
-            obj.push_back(Pair("prune_target_size",  nPruneTarget));
+            obj.pushKV("prune_target_size",  nPruneTarget);
         }
     }
 
@@ -1240,10 +1240,10 @@ UniValue getblockchaininfo(const JSONRPCRequest& request)
     for (int pos = Consensus::DEPLOYMENT_CSV; pos != Consensus::MAX_VERSION_BITS_DEPLOYMENTS; ++pos) {
         BIP9SoftForkDescPushBack(bip9_softforks, consensusParams, static_cast<Consensus::DeploymentPos>(pos));
     }
-    obj.push_back(Pair("softforks",             softforks));
-    obj.push_back(Pair("bip9_softforks", bip9_softforks));
+    obj.pushKV("softforks",             softforks);
+    obj.pushKV("bip9_softforks", bip9_softforks);
 
-    obj.push_back(Pair("warnings", GetWarnings("statusbar")));
+    obj.pushKV("warnings", GetWarnings("statusbar"));
     return obj;
 }
 
@@ -1331,11 +1331,11 @@ UniValue getchaintips(const JSONRPCRequest& request)
     for (const CBlockIndex* block : setTips)
     {
         UniValue obj(UniValue::VOBJ);
-        obj.push_back(Pair("height", block->nHeight));
-        obj.push_back(Pair("hash", block->phashBlock->GetHex()));
+        obj.pushKV("height", block->nHeight);
+        obj.pushKV("hash", block->phashBlock->GetHex());
 
         const int branchLen = block->nHeight - chainActive.FindFork(block)->nHeight;
-        obj.push_back(Pair("branchlen", branchLen));
+        obj.pushKV("branchlen", branchLen);
 
         std::string status;
         if (chainActive.Contains(block)) {
@@ -1357,7 +1357,7 @@ UniValue getchaintips(const JSONRPCRequest& request)
             // No clue.
             status = "unknown";
         }
-        obj.push_back(Pair("status", status));
+        obj.pushKV("status", status);
 
         res.push_back(obj);
     }
@@ -1368,13 +1368,13 @@ UniValue getchaintips(const JSONRPCRequest& request)
 UniValue mempoolInfoToJSON()
 {
     UniValue ret(UniValue::VOBJ);
-    ret.push_back(Pair("size", (int64_t) mempool.size()));
-    ret.push_back(Pair("bytes", (int64_t) mempool.GetTotalTxSize()));
-    ret.push_back(Pair("usage", (int64_t) mempool.DynamicMemoryUsage()));
+    ret.pushKV("size", (int64_t) mempool.size());
+    ret.pushKV("bytes", (int64_t) mempool.GetTotalTxSize());
+    ret.pushKV("usage", (int64_t) mempool.DynamicMemoryUsage());
     size_t maxmempool = gArgs.GetArg("-maxmempool", DEFAULT_MAX_MEMPOOL_SIZE) * 1000000;
-    ret.push_back(Pair("maxmempool", (int64_t) maxmempool));
-    ret.push_back(Pair("mempoolminfee", ValueFromAmount(std::max(mempool.GetMinFee(maxmempool), ::minRelayTxFee).GetFeePerK())));
-    ret.push_back(Pair("minrelaytxfee", ValueFromAmount(::minRelayTxFee.GetFeePerK())));
+    ret.pushKV("maxmempool", (int64_t) maxmempool);
+    ret.pushKV("mempoolminfee", ValueFromAmount(std::max(mempool.GetMinFee(maxmempool), ::minRelayTxFee).GetFeePerK()));
+    ret.pushKV("minrelaytxfee", ValueFromAmount(::minRelayTxFee.GetFeePerK()));
 
     return ret;
 }
@@ -1581,15 +1581,15 @@ UniValue getchaintxstats(const JSONRPCRequest& request)
     int nTxDiff = pindex->nChainTx - pindexPast->nChainTx;
 
     UniValue ret(UniValue::VOBJ);
-    ret.push_back(Pair("time", (int64_t)pindex->nTime));
-    ret.push_back(Pair("txcount", (int64_t)pindex->nChainTx));
-    ret.push_back(Pair("window_final_block_hash", pindex->GetBlockHash().GetHex()));
-    ret.push_back(Pair("window_block_count", blockcount));
+    ret.pushKV("time", (int64_t)pindex->nTime);
+    ret.pushKV("txcount", (int64_t)pindex->nChainTx);
+    ret.pushKV("window_final_block_hash", pindex->GetBlockHash().GetHex());
+    ret.pushKV("window_block_count", blockcount);
     if (blockcount > 0) {
-        ret.push_back(Pair("window_tx_count", nTxDiff));
-        ret.push_back(Pair("window_interval", nTimeDiff));
+        ret.pushKV("window_tx_count", nTxDiff);
+        ret.pushKV("window_interval", nTimeDiff);
         if (nTimeDiff > 0) {
-            ret.push_back(Pair("txrate", ((double)nTxDiff) / nTimeDiff));
+            ret.pushKV("txrate", ((double)nTxDiff) / nTimeDiff);
         }
     }
 
diff --git a/src/rpc/mining.cpp b/src/rpc/mining.cpp
index 69d0d12e86..dd74095b62 100644
--- a/src/rpc/mining.cpp
+++ b/src/rpc/mining.cpp
@@ -211,14 +211,14 @@ UniValue getmininginfo(const JSONRPCRequest& request)
     LOCK(cs_main);
 
     UniValue obj(UniValue::VOBJ);
-    obj.push_back(Pair("blocks",           (int)chainActive.Height()));
-    obj.push_back(Pair("currentblockweight", (uint64_t)nLastBlockWeight));
-    obj.push_back(Pair("currentblocktx",   (uint64_t)nLastBlockTx));
-    obj.push_back(Pair("difficulty",       (double)GetDifficulty()));
-    obj.push_back(Pair("networkhashps",    getnetworkhashps(request)));
-    obj.push_back(Pair("pooledtx",         (uint64_t)mempool.size()));
-    obj.push_back(Pair("chain",            Params().NetworkIDString()));
-    obj.push_back(Pair("warnings",         GetWarnings("statusbar")));
+    obj.pushKV("blocks",           (int)chainActive.Height());
+    obj.pushKV("currentblockweight", (uint64_t)nLastBlockWeight);
+    obj.pushKV("currentblocktx",   (uint64_t)nLastBlockTx);
+    obj.pushKV("difficulty",       (double)GetDifficulty());
+    obj.pushKV("networkhashps",    getnetworkhashps(request));
+    obj.pushKV("pooledtx",         (uint64_t)mempool.size());
+    obj.pushKV("chain",            Params().NetworkIDString());
+    obj.pushKV("warnings",         GetWarnings("statusbar"));
     return obj;
 }
 
@@ -550,9 +550,9 @@ UniValue getblocktemplate(const JSONRPCRequest& request)
 
         UniValue entry(UniValue::VOBJ);
 
-        entry.push_back(Pair("data", EncodeHexTx(tx)));
-        entry.push_back(Pair("txid", txHash.GetHex()));
-        entry.push_back(Pair("hash", tx.GetWitnessHash().GetHex()));
+        entry.pushKV("data", EncodeHexTx(tx));
+        entry.pushKV("txid", txHash.GetHex());
+        entry.pushKV("hash", tx.GetWitnessHash().GetHex());
 
         UniValue deps(UniValue::VARR);
         for (const CTxIn &in : tx.vin)
@@ -560,23 +560,23 @@ UniValue getblocktemplate(const JSONRPCRequest& request)
             if (setTxIndex.count(in.prevout.hash))
                 deps.push_back(setTxIndex[in.prevout.hash]);
         }
-        entry.push_back(Pair("depends", deps));
+        entry.pushKV("depends", deps);
 
         int index_in_template = i - 1;
-        entry.push_back(Pair("fee", pblocktemplate->vTxFees[index_in_template]));
+        entry.pushKV("fee", pblocktemplate->vTxFees[index_in_template]);
         int64_t nTxSigOps = pblocktemplate->vTxSigOpsCost[index_in_template];
         if (fPreSegWit) {
             assert(nTxSigOps % WITNESS_SCALE_FACTOR == 0);
             nTxSigOps /= WITNESS_SCALE_FACTOR;
         }
-        entry.push_back(Pair("sigops", nTxSigOps));
-        entry.push_back(Pair("weight", GetTransactionWeight(tx)));
+        entry.pushKV("sigops", nTxSigOps);
+        entry.pushKV("weight", GetTransactionWeight(tx));
 
         transactions.push_back(entry);
     }
 
     UniValue aux(UniValue::VOBJ);
-    aux.push_back(Pair("flags", HexStr(COINBASE_FLAGS.begin(), COINBASE_FLAGS.end())));
+    aux.pushKV("flags", HexStr(COINBASE_FLAGS.begin(), COINBASE_FLAGS.end()));
 
     arith_uint256 hashTarget = arith_uint256().SetCompact(pblock->nBits);
 
@@ -586,7 +586,7 @@ UniValue getblocktemplate(const JSONRPCRequest& request)
     aMutable.push_back("prevblock");
 
     UniValue result(UniValue::VOBJ);
-    result.push_back(Pair("capabilities", aCaps));
+    result.pushKV("capabilities", aCaps);
 
     UniValue aRules(UniValue::VARR);
     UniValue vbavailable(UniValue::VOBJ);
@@ -605,7 +605,7 @@ UniValue getblocktemplate(const JSONRPCRequest& request)
             case THRESHOLD_STARTED:
             {
                 const struct VBDeploymentInfo& vbinfo = VersionBitsDeploymentInfo[pos];
-                vbavailable.push_back(Pair(gbt_vb_name(pos), consensusParams.vDeployments[pos].bit));
+                vbavailable.pushKV(gbt_vb_name(pos), consensusParams.vDeployments[pos].bit);
                 if (setClientRules.find(vbinfo.name) == setClientRules.end()) {
                     if (!vbinfo.gbt_force) {
                         // If the client doesn't support this, don't indicate it in the [default] version
@@ -630,10 +630,10 @@ UniValue getblocktemplate(const JSONRPCRequest& request)
             }
         }
     }
-    result.push_back(Pair("version", pblock->nVersion));
-    result.push_back(Pair("rules", aRules));
-    result.push_back(Pair("vbavailable", vbavailable));
-    result.push_back(Pair("vbrequired", int(0)));
+    result.pushKV("version", pblock->nVersion);
+    result.pushKV("rules", aRules);
+    result.pushKV("vbavailable", vbavailable);
+    result.pushKV("vbrequired", int(0));
 
     if (nMaxVersionPreVB >= 2) {
         // If VB is supported by the client, nMaxVersionPreVB is -1, so we won't get here
@@ -643,15 +643,15 @@ UniValue getblocktemplate(const JSONRPCRequest& request)
         aMutable.push_back("version/force");
     }
 
-    result.push_back(Pair("previousblockhash", pblock->hashPrevBlock.GetHex()));
-    result.push_back(Pair("transactions", transactions));
-    result.push_back(Pair("coinbaseaux", aux));
-    result.push_back(Pair("coinbasevalue", (int64_t)pblock->vtx[0]->vout[0].nValue));
-    result.push_back(Pair("longpollid", chainActive.Tip()->GetBlockHash().GetHex() + i64tostr(nTransactionsUpdatedLast)));
-    result.push_back(Pair("target", hashTarget.GetHex()));
-    result.push_back(Pair("mintime", (int64_t)pindexPrev->GetMedianTimePast()+1));
-    result.push_back(Pair("mutable", aMutable));
-    result.push_back(Pair("noncerange", "00000000ffffffff"));
+    result.pushKV("previousblockhash", pblock->hashPrevBlock.GetHex());
+    result.pushKV("transactions", transactions);
+    result.pushKV("coinbaseaux", aux);
+    result.pushKV("coinbasevalue", (int64_t)pblock->vtx[0]->vout[0].nValue);
+    result.pushKV("longpollid", chainActive.Tip()->GetBlockHash().GetHex() + i64tostr(nTransactionsUpdatedLast));
+    result.pushKV("target", hashTarget.GetHex());
+    result.pushKV("mintime", (int64_t)pindexPrev->GetMedianTimePast()+1);
+    result.pushKV("mutable", aMutable);
+    result.pushKV("noncerange", "00000000ffffffff");
     int64_t nSigOpLimit = MAX_BLOCK_SIGOPS_COST;
     int64_t nSizeLimit = MAX_BLOCK_SERIALIZED_SIZE;
     if (fPreSegWit) {
@@ -660,17 +660,17 @@ UniValue getblocktemplate(const JSONRPCRequest& request)
         assert(nSizeLimit % WITNESS_SCALE_FACTOR == 0);
         nSizeLimit /= WITNESS_SCALE_FACTOR;
     }
-    result.push_back(Pair("sigoplimit", nSigOpLimit));
-    result.push_back(Pair("sizelimit", nSizeLimit));
+    result.pushKV("sigoplimit", nSigOpLimit);
+    result.pushKV("sizelimit", nSizeLimit);
     if (!fPreSegWit) {
-        result.push_back(Pair("weightlimit", (int64_t)MAX_BLOCK_WEIGHT));
+        result.pushKV("weightlimit", (int64_t)MAX_BLOCK_WEIGHT);
     }
-    result.push_back(Pair("curtime", pblock->GetBlockTime()));
-    result.push_back(Pair("bits", strprintf("%08x", pblock->nBits)));
-    result.push_back(Pair("height", (int64_t)(pindexPrev->nHeight+1)));
+    result.pushKV("curtime", pblock->GetBlockTime());
+    result.pushKV("bits", strprintf("%08x", pblock->nBits));
+    result.pushKV("height", (int64_t)(pindexPrev->nHeight+1));
 
     if (!pblocktemplate->vchCoinbaseCommitment.empty() && fSupportsSegwit) {
-        result.push_back(Pair("default_witness_commitment", HexStr(pblocktemplate->vchCoinbaseCommitment.begin(), pblocktemplate->vchCoinbaseCommitment.end())));
+        result.pushKV("default_witness_commitment", HexStr(pblocktemplate->vchCoinbaseCommitment.begin(), pblocktemplate->vchCoinbaseCommitment.end()));
     }
 
     return result;
@@ -823,12 +823,12 @@ UniValue estimatesmartfee(const JSONRPCRequest& request)
     FeeCalculation feeCalc;
     CFeeRate feeRate = ::feeEstimator.estimateSmartFee(conf_target, &feeCalc, conservative);
     if (feeRate != CFeeRate(0)) {
-        result.push_back(Pair("feerate", ValueFromAmount(feeRate.GetFeePerK())));
+        result.pushKV("feerate", ValueFromAmount(feeRate.GetFeePerK()));
     } else {
         errors.push_back("Insufficient data or no feerate found");
-        result.push_back(Pair("errors", errors));
+        result.pushKV("errors", errors);
     }
-    result.push_back(Pair("blocks", feeCalc.returnedTarget));
+    result.pushKV("blocks", feeCalc.returnedTarget);
     return result;
 }
 
@@ -899,37 +899,37 @@ UniValue estimaterawfee(const JSONRPCRequest& request)
         UniValue horizon_result(UniValue::VOBJ);
         UniValue errors(UniValue::VARR);
         UniValue passbucket(UniValue::VOBJ);
-        passbucket.push_back(Pair("startrange", round(buckets.pass.start)));
-        passbucket.push_back(Pair("endrange", round(buckets.pass.end)));
-        passbucket.push_back(Pair("withintarget", round(buckets.pass.withinTarget * 100.0) / 100.0));
-        passbucket.push_back(Pair("totalconfirmed", round(buckets.pass.totalConfirmed * 100.0) / 100.0));
-        passbucket.push_back(Pair("inmempool", round(buckets.pass.inMempool * 100.0) / 100.0));
-        passbucket.push_back(Pair("leftmempool", round(buckets.pass.leftMempool * 100.0) / 100.0));
+        passbucket.pushKV("startrange", round(buckets.pass.start));
+        passbucket.pushKV("endrange", round(buckets.pass.end));
+        passbucket.pushKV("withintarget", round(buckets.pass.withinTarget * 100.0) / 100.0);
+        passbucket.pushKV("totalconfirmed", round(buckets.pass.totalConfirmed * 100.0) / 100.0);
+        passbucket.pushKV("inmempool", round(buckets.pass.inMempool * 100.0) / 100.0);
+        passbucket.pushKV("leftmempool", round(buckets.pass.leftMempool * 100.0) / 100.0);
         UniValue failbucket(UniValue::VOBJ);
-        failbucket.push_back(Pair("startrange", round(buckets.fail.start)));
-        failbucket.push_back(Pair("endrange", round(buckets.fail.end)));
-        failbucket.push_back(Pair("withintarget", round(buckets.fail.withinTarget * 100.0) / 100.0));
-        failbucket.push_back(Pair("totalconfirmed", round(buckets.fail.totalConfirmed * 100.0) / 100.0));
-        failbucket.push_back(Pair("inmempool", round(buckets.fail.inMempool * 100.0) / 100.0));
-        failbucket.push_back(Pair("leftmempool", round(buckets.fail.leftMempool * 100.0) / 100.0));
+        failbucket.pushKV("startrange", round(buckets.fail.start));
+        failbucket.pushKV("endrange", round(buckets.fail.end));
+        failbucket.pushKV("withintarget", round(buckets.fail.withinTarget * 100.0) / 100.0);
+        failbucket.pushKV("totalconfirmed", round(buckets.fail.totalConfirmed * 100.0) / 100.0);
+        failbucket.pushKV("inmempool", round(buckets.fail.inMempool * 100.0) / 100.0);
+        failbucket.pushKV("leftmempool", round(buckets.fail.leftMempool * 100.0) / 100.0);
 
         // CFeeRate(0) is used to indicate error as a return value from estimateRawFee
         if (feeRate != CFeeRate(0)) {
-            horizon_result.push_back(Pair("feerate", ValueFromAmount(feeRate.GetFeePerK())));
-            horizon_result.push_back(Pair("decay", buckets.decay));
-            horizon_result.push_back(Pair("scale", (int)buckets.scale));
-            horizon_result.push_back(Pair("pass", passbucket));
+            horizon_result.pushKV("feerate", ValueFromAmount(feeRate.GetFeePerK()));
+            horizon_result.pushKV("decay", buckets.decay);
+            horizon_result.pushKV("scale", (int)buckets.scale);
+            horizon_result.pushKV("pass", passbucket);
             // buckets.fail.start == -1 indicates that all buckets passed, there is no fail bucket to output
-            if (buckets.fail.start != -1) horizon_result.push_back(Pair("fail", failbucket));
+            if (buckets.fail.start != -1) horizon_result.pushKV("fail", failbucket);
         } else {
             // Output only information that is still meaningful in the event of error
-            horizon_result.push_back(Pair("decay", buckets.decay));
-            horizon_result.push_back(Pair("scale", (int)buckets.scale));
-            horizon_result.push_back(Pair("fail", failbucket));
+            horizon_result.pushKV("decay", buckets.decay);
+            horizon_result.pushKV("scale", (int)buckets.scale);
+            horizon_result.pushKV("fail", failbucket);
             errors.push_back("Insufficient data or no feerate found which meets threshold");
-            horizon_result.push_back(Pair("errors",errors));
+            horizon_result.pushKV("errors",errors);
         }
-        result.push_back(Pair(StringForFeeEstimateHorizon(horizon), horizon_result));
+        result.pushKV(StringForFeeEstimateHorizon(horizon), horizon_result);
     }
     return result;
 }
diff --git a/src/rpc/misc.cpp b/src/rpc/misc.cpp
index e772f56534..3f89996e61 100644
--- a/src/rpc/misc.cpp
+++ b/src/rpc/misc.cpp
@@ -86,11 +86,11 @@ public:
     UniValue operator()(const CKeyID &keyID) const {
         UniValue obj(UniValue::VOBJ);
         CPubKey vchPubKey;
-        obj.push_back(Pair("isscript", false));
-        obj.push_back(Pair("iswitness", false));
+        obj.pushKV("isscript", false);
+        obj.pushKV("iswitness", false);
         if (pwallet && pwallet->GetPubKey(keyID, vchPubKey)) {
-            obj.push_back(Pair("pubkey", HexStr(vchPubKey)));
-            obj.push_back(Pair("iscompressed", vchPubKey.IsCompressed()));
+            obj.pushKV("pubkey", HexStr(vchPubKey));
+            obj.pushKV("iscompressed", vchPubKey.IsCompressed());
         }
         return obj;
     }
@@ -98,8 +98,8 @@ public:
     UniValue operator()(const CScriptID &scriptID) const {
         UniValue obj(UniValue::VOBJ);
         CScript subscript;
-        obj.push_back(Pair("isscript", true));
-        obj.push_back(Pair("iswitness", false));
+        obj.pushKV("isscript", true);
+        obj.pushKV("iswitness", false);
         if (pwallet && pwallet->GetCScript(scriptID, subscript)) {
             ProcessSubScript(subscript, obj, true);
         }
@@ -110,12 +110,12 @@ public:
     {
         UniValue obj(UniValue::VOBJ);
         CPubKey pubkey;
-        obj.push_back(Pair("isscript", false));
-        obj.push_back(Pair("iswitness", true));
-        obj.push_back(Pair("witness_version", 0));
-        obj.push_back(Pair("witness_program", HexStr(id.begin(), id.end())));
+        obj.pushKV("isscript", false);
+        obj.pushKV("iswitness", true);
+        obj.pushKV("witness_version", 0);
+        obj.pushKV("witness_program", HexStr(id.begin(), id.end()));
         if (pwallet && pwallet->GetPubKey(CKeyID(id), pubkey)) {
-            obj.push_back(Pair("pubkey", HexStr(pubkey)));
+            obj.pushKV("pubkey", HexStr(pubkey));
         }
         return obj;
     }
@@ -124,10 +124,10 @@ public:
     {
         UniValue obj(UniValue::VOBJ);
         CScript subscript;
-        obj.push_back(Pair("isscript", true));
-        obj.push_back(Pair("iswitness", true));
-        obj.push_back(Pair("witness_version", 0));
-        obj.push_back(Pair("witness_program", HexStr(id.begin(), id.end())));
+        obj.pushKV("isscript", true);
+        obj.pushKV("iswitness", true);
+        obj.pushKV("witness_version", 0);
+        obj.pushKV("witness_program", HexStr(id.begin(), id.end()));
         CRIPEMD160 hasher;
         uint160 hash;
         hasher.Write(id.begin(), 32).Finalize(hash.begin());
@@ -141,9 +141,9 @@ public:
     {
         UniValue obj(UniValue::VOBJ);
         CScript subscript;
-        obj.push_back(Pair("iswitness", true));
-        obj.push_back(Pair("witness_version", (int)id.version));
-        obj.push_back(Pair("witness_program", HexStr(id.program, id.program + id.length)));
+        obj.pushKV("iswitness", true);
+        obj.pushKV("witness_version", (int)id.version);
+        obj.pushKV("witness_program", HexStr(id.program, id.program + id.length));
         return obj;
     }
 };
@@ -206,23 +206,23 @@ UniValue validateaddress(const JSONRPCRequest& request)
     bool isValid = IsValidDestination(dest);
 
     UniValue ret(UniValue::VOBJ);
-    ret.push_back(Pair("isvalid", isValid));
+    ret.pushKV("isvalid", isValid);
     if (isValid)
     {
         std::string currentAddress = EncodeDestination(dest);
-        ret.push_back(Pair("address", currentAddress));
+        ret.pushKV("address", currentAddress);
 
         CScript scriptPubKey = GetScriptForDestination(dest);
-        ret.push_back(Pair("scriptPubKey", HexStr(scriptPubKey.begin(), scriptPubKey.end())));
+        ret.pushKV("scriptPubKey", HexStr(scriptPubKey.begin(), scriptPubKey.end()));
 
 #ifdef ENABLE_WALLET
         isminetype mine = pwallet ? IsMine(*pwallet, dest) : ISMINE_NO;
-        ret.push_back(Pair("ismine", bool(mine & ISMINE_SPENDABLE)));
-        ret.push_back(Pair("iswatchonly", bool(mine & ISMINE_WATCH_ONLY)));
+        ret.pushKV("ismine", bool(mine & ISMINE_SPENDABLE));
+        ret.pushKV("iswatchonly", bool(mine & ISMINE_WATCH_ONLY));
         UniValue detail = boost::apply_visitor(DescribeAddressVisitor(pwallet), dest);
         ret.pushKVs(detail);
         if (pwallet && pwallet->mapAddressBook.count(dest)) {
-            ret.push_back(Pair("account", pwallet->mapAddressBook[dest].name));
+            ret.pushKV("account", pwallet->mapAddressBook[dest].name);
         }
         if (pwallet) {
             const CKeyMetadata* meta = nullptr;
@@ -240,10 +240,10 @@ UniValue validateaddress(const JSONRPCRequest& request)
                 }
             }
             if (meta) {
-                ret.push_back(Pair("timestamp", meta->nCreateTime));
+                ret.pushKV("timestamp", meta->nCreateTime);
                 if (!meta->hdKeypath.empty()) {
-                    ret.push_back(Pair("hdkeypath", meta->hdKeypath));
-                    ret.push_back(Pair("hdmasterkeyid", meta->hdMasterKeyID.GetHex()));
+                    ret.pushKV("hdkeypath", meta->hdKeypath);
+                    ret.pushKV("hdmasterkeyid", meta->hdMasterKeyID.GetHex());
                 }
             }
         }
@@ -304,8 +304,8 @@ UniValue createmultisig(const JSONRPCRequest& request)
     CScriptID innerID(inner);
 
     UniValue result(UniValue::VOBJ);
-    result.push_back(Pair("address", EncodeDestination(innerID)));
-    result.push_back(Pair("redeemScript", HexStr(inner.begin(), inner.end())));
+    result.pushKV("address", EncodeDestination(innerID));
+    result.pushKV("redeemScript", HexStr(inner.begin(), inner.end()));
 
     return result;
 }
@@ -439,12 +439,12 @@ static UniValue RPCLockedMemoryInfo()
 {
     LockedPool::Stats stats = LockedPoolManager::Instance().stats();
     UniValue obj(UniValue::VOBJ);
-    obj.push_back(Pair("used", uint64_t(stats.used)));
-    obj.push_back(Pair("free", uint64_t(stats.free)));
-    obj.push_back(Pair("total", uint64_t(stats.total)));
-    obj.push_back(Pair("locked", uint64_t(stats.locked)));
-    obj.push_back(Pair("chunks_used", uint64_t(stats.chunks_used)));
-    obj.push_back(Pair("chunks_free", uint64_t(stats.chunks_free)));
+    obj.pushKV("used", uint64_t(stats.used));
+    obj.pushKV("free", uint64_t(stats.free));
+    obj.pushKV("total", uint64_t(stats.total));
+    obj.pushKV("locked", uint64_t(stats.locked));
+    obj.pushKV("chunks_used", uint64_t(stats.chunks_used));
+    obj.pushKV("chunks_free", uint64_t(stats.chunks_free));
     return obj;
 }
 
@@ -501,7 +501,7 @@ UniValue getmemoryinfo(const JSONRPCRequest& request)
     std::string mode = request.params[0].isNull() ? "stats" : request.params[0].get_str();
     if (mode == "stats") {
         UniValue obj(UniValue::VOBJ);
-        obj.push_back(Pair("locked", RPCLockedMemoryInfo()));
+        obj.pushKV("locked", RPCLockedMemoryInfo());
         return obj;
     } else if (mode == "mallocinfo") {
 #ifdef HAVE_MALLOC_INFO
diff --git a/src/rpc/net.cpp b/src/rpc/net.cpp
index 59b376c59a..7a0225ff0d 100644
--- a/src/rpc/net.cpp
+++ b/src/rpc/net.cpp
@@ -130,59 +130,59 @@ UniValue getpeerinfo(const JSONRPCRequest& request)
         UniValue obj(UniValue::VOBJ);
         CNodeStateStats statestats;
         bool fStateStats = GetNodeStateStats(stats.nodeid, statestats);
-        obj.push_back(Pair("id", stats.nodeid));
-        obj.push_back(Pair("addr", stats.addrName));
+        obj.pushKV("id", stats.nodeid);
+        obj.pushKV("addr", stats.addrName);
         if (!(stats.addrLocal.empty()))
-            obj.push_back(Pair("addrlocal", stats.addrLocal));
+            obj.pushKV("addrlocal", stats.addrLocal);
         if (stats.addrBind.IsValid())
-            obj.push_back(Pair("addrbind", stats.addrBind.ToString()));
-        obj.push_back(Pair("services", strprintf("%016x", stats.nServices)));
-        obj.push_back(Pair("relaytxes", stats.fRelayTxes));
-        obj.push_back(Pair("lastsend", stats.nLastSend));
-        obj.push_back(Pair("lastrecv", stats.nLastRecv));
-        obj.push_back(Pair("bytessent", stats.nSendBytes));
-        obj.push_back(Pair("bytesrecv", stats.nRecvBytes));
-        obj.push_back(Pair("conntime", stats.nTimeConnected));
-        obj.push_back(Pair("timeoffset", stats.nTimeOffset));
+            obj.pushKV("addrbind", stats.addrBind.ToString());
+        obj.pushKV("services", strprintf("%016x", stats.nServices));
+        obj.pushKV("relaytxes", stats.fRelayTxes);
+        obj.pushKV("lastsend", stats.nLastSend);
+        obj.pushKV("lastrecv", stats.nLastRecv);
+        obj.pushKV("bytessent", stats.nSendBytes);
+        obj.pushKV("bytesrecv", stats.nRecvBytes);
+        obj.pushKV("conntime", stats.nTimeConnected);
+        obj.pushKV("timeoffset", stats.nTimeOffset);
         if (stats.dPingTime > 0.0)
-            obj.push_back(Pair("pingtime", stats.dPingTime));
+            obj.pushKV("pingtime", stats.dPingTime);
         if (stats.dMinPing < static_cast<double>(std::numeric_limits<int64_t>::max())/1e6)
-            obj.push_back(Pair("minping", stats.dMinPing));
+            obj.pushKV("minping", stats.dMinPing);
         if (stats.dPingWait > 0.0)
-            obj.push_back(Pair("pingwait", stats.dPingWait));
-        obj.push_back(Pair("version", stats.nVersion));
+            obj.pushKV("pingwait", stats.dPingWait);
+        obj.pushKV("version", stats.nVersion);
         // Use the sanitized form of subver here, to avoid tricksy remote peers from
         // corrupting or modifying the JSON output by putting special characters in
         // their ver message.
-        obj.push_back(Pair("subver", stats.cleanSubVer));
-        obj.push_back(Pair("inbound", stats.fInbound));
-        obj.push_back(Pair("addnode", stats.m_manual_connection));
-        obj.push_back(Pair("startingheight", stats.nStartingHeight));
+        obj.pushKV("subver", stats.cleanSubVer);
+        obj.pushKV("inbound", stats.fInbound);
+        obj.pushKV("addnode", stats.m_manual_connection);
+        obj.pushKV("startingheight", stats.nStartingHeight);
         if (fStateStats) {
-            obj.push_back(Pair("banscore", statestats.nMisbehavior));
-            obj.push_back(Pair("synced_headers", statestats.nSyncHeight));
-            obj.push_back(Pair("synced_blocks", statestats.nCommonHeight));
+            obj.pushKV("banscore", statestats.nMisbehavior);
+            obj.pushKV("synced_headers", statestats.nSyncHeight);
+            obj.pushKV("synced_blocks", statestats.nCommonHeight);
             UniValue heights(UniValue::VARR);
             for (int height : statestats.vHeightInFlight) {
                 heights.push_back(height);
             }
-            obj.push_back(Pair("inflight", heights));
+            obj.pushKV("inflight", heights);
         }
-        obj.push_back(Pair("whitelisted", stats.fWhitelisted));
+        obj.pushKV("whitelisted", stats.fWhitelisted);
 
         UniValue sendPerMsgCmd(UniValue::VOBJ);
         for (const mapMsgCmdSize::value_type &i : stats.mapSendBytesPerMsgCmd) {
             if (i.second > 0)
-                sendPerMsgCmd.push_back(Pair(i.first, i.second));
+                sendPerMsgCmd.pushKV(i.first, i.second);
         }
-        obj.push_back(Pair("bytessent_per_msg", sendPerMsgCmd));
+        obj.pushKV("bytessent_per_msg", sendPerMsgCmd);
 
         UniValue recvPerMsgCmd(UniValue::VOBJ);
         for (const mapMsgCmdSize::value_type &i : stats.mapRecvBytesPerMsgCmd) {
             if (i.second > 0)
-                recvPerMsgCmd.push_back(Pair(i.first, i.second));
+                recvPerMsgCmd.pushKV(i.first, i.second);
         }
-        obj.push_back(Pair("bytesrecv_per_msg", recvPerMsgCmd));
+        obj.pushKV("bytesrecv_per_msg", recvPerMsgCmd);
 
         ret.push_back(obj);
     }
@@ -331,16 +331,16 @@ UniValue getaddednodeinfo(const JSONRPCRequest& request)
 
     for (const AddedNodeInfo& info : vInfo) {
         UniValue obj(UniValue::VOBJ);
-        obj.push_back(Pair("addednode", info.strAddedNode));
-        obj.push_back(Pair("connected", info.fConnected));
+        obj.pushKV("addednode", info.strAddedNode);
+        obj.pushKV("connected", info.fConnected);
         UniValue addresses(UniValue::VARR);
         if (info.fConnected) {
             UniValue address(UniValue::VOBJ);
-            address.push_back(Pair("address", info.resolvedAddress.ToString()));
-            address.push_back(Pair("connected", info.fInbound ? "inbound" : "outbound"));
+            address.pushKV("address", info.resolvedAddress.ToString());
+            address.pushKV("connected", info.fInbound ? "inbound" : "outbound");
             addresses.push_back(address);
         }
-        obj.push_back(Pair("addresses", addresses));
+        obj.pushKV("addresses", addresses);
         ret.push_back(obj);
     }
 
@@ -377,18 +377,18 @@ UniValue getnettotals(const JSONRPCRequest& request)
         throw JSONRPCError(RPC_CLIENT_P2P_DISABLED, "Error: Peer-to-peer functionality missing or disabled");
 
     UniValue obj(UniValue::VOBJ);
-    obj.push_back(Pair("totalbytesrecv", g_connman->GetTotalBytesRecv()));
-    obj.push_back(Pair("totalbytessent", g_connman->GetTotalBytesSent()));
-    obj.push_back(Pair("timemillis", GetTimeMillis()));
+    obj.pushKV("totalbytesrecv", g_connman->GetTotalBytesRecv());
+    obj.pushKV("totalbytessent", g_connman->GetTotalBytesSent());
+    obj.pushKV("timemillis", GetTimeMillis());
 
     UniValue outboundLimit(UniValue::VOBJ);
-    outboundLimit.push_back(Pair("timeframe", g_connman->GetMaxOutboundTimeframe()));
-    outboundLimit.push_back(Pair("target", g_connman->GetMaxOutboundTarget()));
-    outboundLimit.push_back(Pair("target_reached", g_connman->OutboundTargetReached(false)));
-    outboundLimit.push_back(Pair("serve_historical_blocks", !g_connman->OutboundTargetReached(true)));
-    outboundLimit.push_back(Pair("bytes_left_in_cycle", g_connman->GetOutboundTargetBytesLeft()));
-    outboundLimit.push_back(Pair("time_left_in_cycle", g_connman->GetMaxOutboundTimeLeftInCycle()));
-    obj.push_back(Pair("uploadtarget", outboundLimit));
+    outboundLimit.pushKV("timeframe", g_connman->GetMaxOutboundTimeframe());
+    outboundLimit.pushKV("target", g_connman->GetMaxOutboundTarget());
+    outboundLimit.pushKV("target_reached", g_connman->OutboundTargetReached(false));
+    outboundLimit.pushKV("serve_historical_blocks", !g_connman->OutboundTargetReached(true));
+    outboundLimit.pushKV("bytes_left_in_cycle", g_connman->GetOutboundTargetBytesLeft());
+    outboundLimit.pushKV("time_left_in_cycle", g_connman->GetMaxOutboundTimeLeftInCycle());
+    obj.pushKV("uploadtarget", outboundLimit);
     return obj;
 }
 
@@ -403,11 +403,11 @@ static UniValue GetNetworksInfo()
         proxyType proxy;
         UniValue obj(UniValue::VOBJ);
         GetProxy(network, proxy);
-        obj.push_back(Pair("name", GetNetworkName(network)));
-        obj.push_back(Pair("limited", IsLimited(network)));
-        obj.push_back(Pair("reachable", IsReachable(network)));
-        obj.push_back(Pair("proxy", proxy.IsValid() ? proxy.proxy.ToStringIPPort() : std::string()));
-        obj.push_back(Pair("proxy_randomize_credentials", proxy.randomize_credentials));
+        obj.pushKV("name", GetNetworkName(network));
+        obj.pushKV("limited", IsLimited(network));
+        obj.pushKV("reachable", IsReachable(network));
+        obj.pushKV("proxy", proxy.IsValid() ? proxy.proxy.ToStringIPPort() : std::string());
+        obj.pushKV("proxy_randomize_credentials", proxy.randomize_credentials);
         networks.push_back(obj);
     }
     return networks;
@@ -458,34 +458,34 @@ UniValue getnetworkinfo(const JSONRPCRequest& request)
 
     LOCK(cs_main);
     UniValue obj(UniValue::VOBJ);
-    obj.push_back(Pair("version",       CLIENT_VERSION));
-    obj.push_back(Pair("subversion",    strSubVersion));
-    obj.push_back(Pair("protocolversion",PROTOCOL_VERSION));
+    obj.pushKV("version",       CLIENT_VERSION);
+    obj.pushKV("subversion",    strSubVersion);
+    obj.pushKV("protocolversion",PROTOCOL_VERSION);
     if(g_connman)
-        obj.push_back(Pair("localservices", strprintf("%016x", g_connman->GetLocalServices())));
-    obj.push_back(Pair("localrelay",     fRelayTxes));
-    obj.push_back(Pair("timeoffset",    GetTimeOffset()));
+        obj.pushKV("localservices", strprintf("%016x", g_connman->GetLocalServices()));
+    obj.pushKV("localrelay",     fRelayTxes);
+    obj.pushKV("timeoffset",    GetTimeOffset());
     if (g_connman) {
-        obj.push_back(Pair("networkactive", g_connman->GetNetworkActive()));
-        obj.push_back(Pair("connections",   (int)g_connman->GetNodeCount(CConnman::CONNECTIONS_ALL)));
+        obj.pushKV("networkactive", g_connman->GetNetworkActive());
+        obj.pushKV("connections",   (int)g_connman->GetNodeCount(CConnman::CONNECTIONS_ALL));
     }
-    obj.push_back(Pair("networks",      GetNetworksInfo()));
-    obj.push_back(Pair("relayfee",      ValueFromAmount(::minRelayTxFee.GetFeePerK())));
-    obj.push_back(Pair("incrementalfee", ValueFromAmount(::incrementalRelayFee.GetFeePerK())));
+    obj.pushKV("networks",      GetNetworksInfo());
+    obj.pushKV("relayfee",      ValueFromAmount(::minRelayTxFee.GetFeePerK()));
+    obj.pushKV("incrementalfee", ValueFromAmount(::incrementalRelayFee.GetFeePerK()));
     UniValue localAddresses(UniValue::VARR);
     {
         LOCK(cs_mapLocalHost);
         for (const std::pair<CNetAddr, LocalServiceInfo> &item : mapLocalHost)
         {
             UniValue rec(UniValue::VOBJ);
-            rec.push_back(Pair("address", item.first.ToString()));
-            rec.push_back(Pair("port", item.second.nPort));
-            rec.push_back(Pair("score", item.second.nScore));
+            rec.pushKV("address", item.first.ToString());
+            rec.pushKV("port", item.second.nPort);
+            rec.pushKV("score", item.second.nScore);
             localAddresses.push_back(rec);
         }
     }
-    obj.push_back(Pair("localaddresses", localAddresses));
-    obj.push_back(Pair("warnings",       GetWarnings("statusbar")));
+    obj.pushKV("localaddresses", localAddresses);
+    obj.pushKV("warnings",       GetWarnings("statusbar"));
     return obj;
 }
 
@@ -575,10 +575,10 @@ UniValue listbanned(const JSONRPCRequest& request)
     {
         const CBanEntry& banEntry = entry.second;
         UniValue rec(UniValue::VOBJ);
-        rec.push_back(Pair("address", entry.first.ToString()));
-        rec.push_back(Pair("banned_until", banEntry.nBanUntil));
-        rec.push_back(Pair("ban_created", banEntry.nCreateTime));
-        rec.push_back(Pair("ban_reason", banEntry.banReasonToString()));
+        rec.pushKV("address", entry.first.ToString());
+        rec.pushKV("banned_until", banEntry.nBanUntil);
+        rec.pushKV("ban_created", banEntry.nCreateTime);
+        rec.pushKV("ban_reason", banEntry.banReasonToString());
 
         bannedAddresses.push_back(rec);
     }
diff --git a/src/rpc/protocol.cpp b/src/rpc/protocol.cpp
index cdd2e67a69..0635b757c6 100644
--- a/src/rpc/protocol.cpp
+++ b/src/rpc/protocol.cpp
@@ -26,9 +26,9 @@
 UniValue JSONRPCRequestObj(const std::string& strMethod, const UniValue& params, const UniValue& id)
 {
     UniValue request(UniValue::VOBJ);
-    request.push_back(Pair("method", strMethod));
-    request.push_back(Pair("params", params));
-    request.push_back(Pair("id", id));
+    request.pushKV("method", strMethod);
+    request.pushKV("params", params);
+    request.pushKV("id", id);
     return request;
 }
 
@@ -36,11 +36,11 @@ UniValue JSONRPCReplyObj(const UniValue& result, const UniValue& error, const Un
 {
     UniValue reply(UniValue::VOBJ);
     if (!error.isNull())
-        reply.push_back(Pair("result", NullUniValue));
+        reply.pushKV("result", NullUniValue);
     else
-        reply.push_back(Pair("result", result));
-    reply.push_back(Pair("error", error));
-    reply.push_back(Pair("id", id));
+        reply.pushKV("result", result);
+    reply.pushKV("error", error);
+    reply.pushKV("id", id);
     return reply;
 }
 
@@ -53,8 +53,8 @@ std::string JSONRPCReply(const UniValue& result, const UniValue& error, const Un
 UniValue JSONRPCError(int code, const std::string& message)
 {
     UniValue error(UniValue::VOBJ);
-    error.push_back(Pair("code", code));
-    error.push_back(Pair("message", message));
+    error.pushKV("code", code);
+    error.pushKV("message", message);
     return error;
 }
 
diff --git a/src/rpc/rawtransaction.cpp b/src/rpc/rawtransaction.cpp
index 00e73675b4..fb70f9d596 100644
--- a/src/rpc/rawtransaction.cpp
+++ b/src/rpc/rawtransaction.cpp
@@ -47,17 +47,17 @@ void TxToJSON(const CTransaction& tx, const uint256 hashBlock, UniValue& entry)
     TxToUniv(tx, uint256(), entry, true, RPCSerializationFlags());
 
     if (!hashBlock.IsNull()) {
-        entry.push_back(Pair("blockhash", hashBlock.GetHex()));
+        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.push_back(Pair("confirmations", 1 + chainActive.Height() - pindex->nHeight));
-                entry.push_back(Pair("time", pindex->GetBlockTime()));
-                entry.push_back(Pair("blocktime", pindex->GetBlockTime()));
+                entry.pushKV("confirmations", 1 + chainActive.Height() - pindex->nHeight);
+                entry.pushKV("time", pindex->GetBlockTime());
+                entry.pushKV("blocktime", pindex->GetBlockTime());
             }
             else
-                entry.push_back(Pair("confirmations", 0));
+                entry.pushKV("confirmations", 0);
         }
     }
 }
@@ -190,7 +190,7 @@ UniValue getrawtransaction(const JSONRPCRequest& request)
     }
 
     UniValue result(UniValue::VOBJ);
-    if (blockindex) result.push_back(Pair("in_active_chain", in_active_chain));
+    if (blockindex) result.pushKV("in_active_chain", in_active_chain);
     TxToJSON(*tx, hash_block, result);
     return result;
 }
@@ -562,7 +562,7 @@ UniValue decodescript(const JSONRPCRequest& request)
     if (type.isStr() && type.get_str() != "scripthash") {
         // P2SH cannot be wrapped in a P2SH. If this script is already a P2SH,
         // don't return the address for a P2SH of the P2SH.
-        r.push_back(Pair("p2sh", EncodeDestination(CScriptID(script))));
+        r.pushKV("p2sh", EncodeDestination(CScriptID(script)));
     }
 
     return r;
@@ -572,16 +572,16 @@ UniValue decodescript(const JSONRPCRequest& request)
 static void TxInErrorToJSON(const CTxIn& txin, UniValue& vErrorsRet, const std::string& strMessage)
 {
     UniValue entry(UniValue::VOBJ);
-    entry.push_back(Pair("txid", txin.prevout.hash.ToString()));
-    entry.push_back(Pair("vout", (uint64_t)txin.prevout.n));
+    entry.pushKV("txid", txin.prevout.hash.ToString());
+    entry.pushKV("vout", (uint64_t)txin.prevout.n);
     UniValue witness(UniValue::VARR);
     for (unsigned int i = 0; i < txin.scriptWitness.stack.size(); i++) {
         witness.push_back(HexStr(txin.scriptWitness.stack[i].begin(), txin.scriptWitness.stack[i].end()));
     }
-    entry.push_back(Pair("witness", witness));
-    entry.push_back(Pair("scriptSig", HexStr(txin.scriptSig.begin(), txin.scriptSig.end())));
-    entry.push_back(Pair("sequence", (uint64_t)txin.nSequence));
-    entry.push_back(Pair("error", strMessage));
+    entry.pushKV("witness", witness);
+    entry.pushKV("scriptSig", HexStr(txin.scriptSig.begin(), txin.scriptSig.end()));
+    entry.pushKV("sequence", (uint64_t)txin.nSequence);
+    entry.pushKV("error", strMessage);
     vErrorsRet.push_back(entry);
 }
 
@@ -916,10 +916,10 @@ UniValue signrawtransaction(const JSONRPCRequest& request)
     bool fComplete = vErrors.empty();
 
     UniValue result(UniValue::VOBJ);
-    result.push_back(Pair("hex", EncodeHexTx(mtx)));
-    result.push_back(Pair("complete", fComplete));
+    result.pushKV("hex", EncodeHexTx(mtx));
+    result.pushKV("complete", fComplete);
     if (!vErrors.empty()) {
-        result.push_back(Pair("errors", vErrors));
+        result.pushKV("errors", vErrors);
     }
 
     return result;
diff --git a/src/wallet/rpcdump.cpp b/src/wallet/rpcdump.cpp
index 03fb824e7a..741ea25340 100644
--- a/src/wallet/rpcdump.cpp
+++ b/src/wallet/rpcdump.cpp
@@ -790,7 +790,7 @@ UniValue dumpwallet(const JSONRPCRequest& request)
     file.close();
 
     UniValue reply(UniValue::VOBJ);
-    reply.push_back(Pair("filename", filepath.string()));
+    reply.pushKV("filename", filepath.string());
 
     return reply;
 }
diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp
index 261d9b37f5..b466cf1a81 100644
--- a/src/wallet/rpcwallet.cpp
+++ b/src/wallet/rpcwallet.cpp
@@ -86,25 +86,25 @@ void EnsureWalletIsUnlocked(CWallet * const pwallet)
 void WalletTxToJSON(const CWalletTx& wtx, UniValue& entry)
 {
     int confirms = wtx.GetDepthInMainChain();
-    entry.push_back(Pair("confirmations", confirms));
+    entry.pushKV("confirmations", confirms);
     if (wtx.IsCoinBase())
-        entry.push_back(Pair("generated", true));
+        entry.pushKV("generated", true);
     if (confirms > 0)
     {
-        entry.push_back(Pair("blockhash", wtx.hashBlock.GetHex()));
-        entry.push_back(Pair("blockindex", wtx.nIndex));
-        entry.push_back(Pair("blocktime", mapBlockIndex[wtx.hashBlock]->GetBlockTime()));
+        entry.pushKV("blockhash", wtx.hashBlock.GetHex());
+        entry.pushKV("blockindex", wtx.nIndex);
+        entry.pushKV("blocktime", mapBlockIndex[wtx.hashBlock]->GetBlockTime());
     } else {
-        entry.push_back(Pair("trusted", wtx.IsTrusted()));
+        entry.pushKV("trusted", wtx.IsTrusted());
     }
     uint256 hash = wtx.GetHash();
-    entry.push_back(Pair("txid", hash.GetHex()));
+    entry.pushKV("txid", hash.GetHex());
     UniValue conflicts(UniValue::VARR);
     for (const uint256& conflict : wtx.GetConflicts())
         conflicts.push_back(conflict.GetHex());
-    entry.push_back(Pair("walletconflicts", conflicts));
-    entry.push_back(Pair("time", wtx.GetTxTime()));
-    entry.push_back(Pair("timereceived", (int64_t)wtx.nTimeReceived));
+    entry.pushKV("walletconflicts", conflicts);
+    entry.pushKV("time", wtx.GetTxTime());
+    entry.pushKV("timereceived", (int64_t)wtx.nTimeReceived);
 
     // Add opt-in RBF status
     std::string rbfStatus = "no";
@@ -116,10 +116,10 @@ void WalletTxToJSON(const CWalletTx& wtx, UniValue& entry)
         else if (rbfState == RBF_TRANSACTIONSTATE_REPLACEABLE_BIP125)
             rbfStatus = "yes";
     }
-    entry.push_back(Pair("bip125-replaceable", rbfStatus));
+    entry.pushKV("bip125-replaceable", rbfStatus);
 
     for (const std::pair<std::string, std::string>& item : wtx.mapValue)
-        entry.push_back(Pair(item.first, item.second));
+        entry.pushKV(item.first, item.second);
 }
 
 std::string AccountFromValue(const UniValue& value)
@@ -1463,13 +1463,13 @@ UniValue ListReceived(CWallet * const pwallet, const UniValue& params, bool fByA
         {
             UniValue obj(UniValue::VOBJ);
             if(fIsWatchonly)
-                obj.push_back(Pair("involvesWatchonly", true));
-            obj.push_back(Pair("address",       EncodeDestination(dest)));
-            obj.push_back(Pair("account",       strAccount));
-            obj.push_back(Pair("amount",        ValueFromAmount(nAmount)));
-            obj.push_back(Pair("confirmations", (nConf == std::numeric_limits<int>::max() ? 0 : nConf)));
+                obj.pushKV("involvesWatchonly", true);
+            obj.pushKV("address",       EncodeDestination(dest));
+            obj.pushKV("account",       strAccount);
+            obj.pushKV("amount",        ValueFromAmount(nAmount));
+            obj.pushKV("confirmations", (nConf == std::numeric_limits<int>::max() ? 0 : nConf));
             if (!fByAccounts)
-                obj.push_back(Pair("label", strAccount));
+                obj.pushKV("label", strAccount);
             UniValue transactions(UniValue::VARR);
             if (it != mapTally.end())
             {
@@ -1478,7 +1478,7 @@ UniValue ListReceived(CWallet * const pwallet, const UniValue& params, bool fByA
                     transactions.push_back(_item.GetHex());
                 }
             }
-            obj.push_back(Pair("txids", transactions));
+            obj.pushKV("txids", transactions);
             ret.push_back(obj);
         }
     }
@@ -1491,10 +1491,10 @@ UniValue ListReceived(CWallet * const pwallet, const UniValue& params, bool fByA
             int nConf = entry.second.nConf;
             UniValue obj(UniValue::VOBJ);
             if (entry.second.fIsWatchonly)
-                obj.push_back(Pair("involvesWatchonly", true));
-            obj.push_back(Pair("account",       entry.first));
-            obj.push_back(Pair("amount",        ValueFromAmount(nAmount)));
-            obj.push_back(Pair("confirmations", (nConf == std::numeric_limits<int>::max() ? 0 : nConf)));
+                obj.pushKV("involvesWatchonly", true);
+            obj.pushKV("account",       entry.first);
+            obj.pushKV("amount",        ValueFromAmount(nAmount));
+            obj.pushKV("confirmations", (nConf == std::numeric_limits<int>::max() ? 0 : nConf));
             ret.push_back(obj);
         }
     }
@@ -1600,7 +1600,7 @@ UniValue listreceivedbyaccount(const JSONRPCRequest& request)
 static void MaybePushAddress(UniValue & entry, const CTxDestination &dest)
 {
     if (IsValidDestination(dest)) {
-        entry.push_back(Pair("address", EncodeDestination(dest)));
+        entry.pushKV("address", EncodeDestination(dest));
     }
 }
 
@@ -1634,20 +1634,20 @@ void ListTransactions(CWallet* const pwallet, const CWalletTx& wtx, const std::s
         {
             UniValue entry(UniValue::VOBJ);
             if (involvesWatchonly || (::IsMine(*pwallet, s.destination) & ISMINE_WATCH_ONLY)) {
-                entry.push_back(Pair("involvesWatchonly", true));
+                entry.pushKV("involvesWatchonly", true);
             }
-            entry.push_back(Pair("account", strSentAccount));
+            entry.pushKV("account", strSentAccount);
             MaybePushAddress(entry, s.destination);
-            entry.push_back(Pair("category", "send"));
-            entry.push_back(Pair("amount", ValueFromAmount(-s.amount)));
+            entry.pushKV("category", "send");
+            entry.pushKV("amount", ValueFromAmount(-s.amount));
             if (pwallet->mapAddressBook.count(s.destination)) {
-                entry.push_back(Pair("label", pwallet->mapAddressBook[s.destination].name));
+                entry.pushKV("label", pwallet->mapAddressBook[s.destination].name);
             }
-            entry.push_back(Pair("vout", s.vout));
-            entry.push_back(Pair("fee", ValueFromAmount(-nFee)));
+            entry.pushKV("vout", s.vout);
+            entry.pushKV("fee", ValueFromAmount(-nFee));
             if (fLong)
                 WalletTxToJSON(wtx, entry);
-            entry.push_back(Pair("abandoned", wtx.isAbandoned()));
+            entry.pushKV("abandoned", wtx.isAbandoned());
             ret.push_back(entry);
         }
     }
@@ -1665,28 +1665,28 @@ void ListTransactions(CWallet* const pwallet, const CWalletTx& wtx, const std::s
             {
                 UniValue entry(UniValue::VOBJ);
                 if (involvesWatchonly || (::IsMine(*pwallet, r.destination) & ISMINE_WATCH_ONLY)) {
-                    entry.push_back(Pair("involvesWatchonly", true));
+                    entry.pushKV("involvesWatchonly", true);
                 }
-                entry.push_back(Pair("account", account));
+                entry.pushKV("account", account);
                 MaybePushAddress(entry, r.destination);
                 if (wtx.IsCoinBase())
                 {
                     if (wtx.GetDepthInMainChain() < 1)
-                        entry.push_back(Pair("category", "orphan"));
+                        entry.pushKV("category", "orphan");
                     else if (wtx.GetBlocksToMaturity() > 0)
-                        entry.push_back(Pair("category", "immature"));
+                        entry.pushKV("category", "immature");
                     else
-                        entry.push_back(Pair("category", "generate"));
+                        entry.pushKV("category", "generate");
                 }
                 else
                 {
-                    entry.push_back(Pair("category", "receive"));
+                    entry.pushKV("category", "receive");
                 }
-                entry.push_back(Pair("amount", ValueFromAmount(r.amount)));
+                entry.pushKV("amount", ValueFromAmount(r.amount));
                 if (pwallet->mapAddressBook.count(r.destination)) {
-                    entry.push_back(Pair("label", account));
+                    entry.pushKV("label", account);
                 }
-                entry.push_back(Pair("vout", r.vout));
+                entry.pushKV("vout", r.vout);
                 if (fLong)
                     WalletTxToJSON(wtx, entry);
                 ret.push_back(entry);
@@ -1702,12 +1702,12 @@ void AcentryToJSON(const CAccountingEntry& acentry, const std::string& strAccoun
     if (fAllAccounts || acentry.strAccount == strAccount)
     {
         UniValue entry(UniValue::VOBJ);
-        entry.push_back(Pair("account", acentry.strAccount));
-        entry.push_back(Pair("category", "move"));
-        entry.push_back(Pair("time", acentry.nTime));
-        entry.push_back(Pair("amount", ValueFromAmount(acentry.nCreditDebit)));
-        entry.push_back(Pair("otheraccount", acentry.strOtherAccount));
-        entry.push_back(Pair("comment", acentry.strComment));
+        entry.pushKV("account", acentry.strAccount);
+        entry.pushKV("category", "move");
+        entry.pushKV("time", acentry.nTime);
+        entry.pushKV("amount", ValueFromAmount(acentry.nCreditDebit));
+        entry.pushKV("otheraccount", acentry.strOtherAccount);
+        entry.pushKV("comment", acentry.strComment);
         ret.push_back(entry);
     }
 }
@@ -1934,7 +1934,7 @@ UniValue listaccounts(const JSONRPCRequest& request)
 
     UniValue ret(UniValue::VOBJ);
     for (const std::pair<std::string, CAmount>& accountBalance : mapAccountBalances) {
-        ret.push_back(Pair(accountBalance.first, ValueFromAmount(accountBalance.second)));
+        ret.pushKV(accountBalance.first, ValueFromAmount(accountBalance.second));
     }
     return ret;
 }
@@ -2074,9 +2074,9 @@ UniValue listsinceblock(const JSONRPCRequest& request)
     uint256 lastblock = pblockLast ? pblockLast->GetBlockHash() : uint256();
 
     UniValue ret(UniValue::VOBJ);
-    ret.push_back(Pair("transactions", transactions));
-    if (include_removed) ret.push_back(Pair("removed", removed));
-    ret.push_back(Pair("lastblock", lastblock.GetHex()));
+    ret.pushKV("transactions", transactions);
+    if (include_removed) ret.pushKV("removed", removed);
+    ret.pushKV("lastblock", lastblock.GetHex());
 
     return ret;
 }
@@ -2161,18 +2161,18 @@ UniValue gettransaction(const JSONRPCRequest& request)
     CAmount nNet = nCredit - nDebit;
     CAmount nFee = (wtx.IsFromMe(filter) ? wtx.tx->GetValueOut() - nDebit : 0);
 
-    entry.push_back(Pair("amount", ValueFromAmount(nNet - nFee)));
+    entry.pushKV("amount", ValueFromAmount(nNet - nFee));
     if (wtx.IsFromMe(filter))
-        entry.push_back(Pair("fee", ValueFromAmount(nFee)));
+        entry.pushKV("fee", ValueFromAmount(nFee));
 
     WalletTxToJSON(wtx, entry);
 
     UniValue details(UniValue::VARR);
     ListTransactions(pwallet, wtx, "*", 0, false, details, filter);
-    entry.push_back(Pair("details", details));
+    entry.pushKV("details", details);
 
     std::string strHex = EncodeHexTx(*wtx.tx, RPCSerializationFlags());
-    entry.push_back(Pair("hex", strHex));
+    entry.pushKV("hex", strHex);
 
     return entry;
 }
@@ -2702,8 +2702,8 @@ UniValue listlockunspent(const JSONRPCRequest& request)
     for (COutPoint &outpt : vOutpts) {
         UniValue o(UniValue::VOBJ);
 
-        o.push_back(Pair("txid", outpt.hash.GetHex()));
-        o.push_back(Pair("vout", (int)outpt.n));
+        o.pushKV("txid", outpt.hash.GetHex());
+        o.pushKV("vout", (int)outpt.n);
         ret.push_back(o);
     }
 
@@ -2781,24 +2781,24 @@ UniValue getwalletinfo(const JSONRPCRequest& request)
     UniValue obj(UniValue::VOBJ);
 
     size_t kpExternalSize = pwallet->KeypoolCountExternalKeys();
-    obj.push_back(Pair("walletname", pwallet->GetName()));
-    obj.push_back(Pair("walletversion", pwallet->GetVersion()));
-    obj.push_back(Pair("balance",       ValueFromAmount(pwallet->GetBalance())));
-    obj.push_back(Pair("unconfirmed_balance", ValueFromAmount(pwallet->GetUnconfirmedBalance())));
-    obj.push_back(Pair("immature_balance",    ValueFromAmount(pwallet->GetImmatureBalance())));
-    obj.push_back(Pair("txcount",       (int)pwallet->mapWallet.size()));
-    obj.push_back(Pair("keypoololdest", pwallet->GetOldestKeyPoolTime()));
-    obj.push_back(Pair("keypoolsize", (int64_t)kpExternalSize));
+    obj.pushKV("walletname", pwallet->GetName());
+    obj.pushKV("walletversion", pwallet->GetVersion());
+    obj.pushKV("balance",       ValueFromAmount(pwallet->GetBalance()));
+    obj.pushKV("unconfirmed_balance", ValueFromAmount(pwallet->GetUnconfirmedBalance()));
+    obj.pushKV("immature_balance",    ValueFromAmount(pwallet->GetImmatureBalance()));
+    obj.pushKV("txcount",       (int)pwallet->mapWallet.size());
+    obj.pushKV("keypoololdest", pwallet->GetOldestKeyPoolTime());
+    obj.pushKV("keypoolsize", (int64_t)kpExternalSize);
     CKeyID masterKeyID = pwallet->GetHDChain().masterKeyID;
     if (!masterKeyID.IsNull() && pwallet->CanSupportFeature(FEATURE_HD_SPLIT)) {
-        obj.push_back(Pair("keypoolsize_hd_internal",   (int64_t)(pwallet->GetKeyPoolSize() - kpExternalSize)));
+        obj.pushKV("keypoolsize_hd_internal",   (int64_t)(pwallet->GetKeyPoolSize() - kpExternalSize));
     }
     if (pwallet->IsCrypted()) {
-        obj.push_back(Pair("unlocked_until", pwallet->nRelockTime));
+        obj.pushKV("unlocked_until", pwallet->nRelockTime);
     }
-    obj.push_back(Pair("paytxfee",      ValueFromAmount(payTxFee.GetFeePerK())));
+    obj.pushKV("paytxfee",      ValueFromAmount(payTxFee.GetFeePerK()));
     if (!masterKeyID.IsNull())
-         obj.push_back(Pair("hdmasterkeyid", masterKeyID.GetHex()));
+         obj.pushKV("hdmasterkeyid", masterKeyID.GetHex());
     return obj;
 }
 
@@ -3003,31 +3003,31 @@ UniValue listunspent(const JSONRPCRequest& request)
             continue;
 
         UniValue entry(UniValue::VOBJ);
-        entry.push_back(Pair("txid", out.tx->GetHash().GetHex()));
-        entry.push_back(Pair("vout", out.i));
+        entry.pushKV("txid", out.tx->GetHash().GetHex());
+        entry.pushKV("vout", out.i);
 
         if (fValidAddress) {
-            entry.push_back(Pair("address", EncodeDestination(address)));
+            entry.pushKV("address", EncodeDestination(address));
 
             if (pwallet->mapAddressBook.count(address)) {
-                entry.push_back(Pair("account", pwallet->mapAddressBook[address].name));
+                entry.pushKV("account", pwallet->mapAddressBook[address].name);
             }
 
             if (scriptPubKey.IsPayToScriptHash()) {
                 const CScriptID& hash = boost::get<CScriptID>(address);
                 CScript redeemScript;
                 if (pwallet->GetCScript(hash, redeemScript)) {
-                    entry.push_back(Pair("redeemScript", HexStr(redeemScript.begin(), redeemScript.end())));
+                    entry.pushKV("redeemScript", HexStr(redeemScript.begin(), redeemScript.end()));
                 }
             }
         }
 
-        entry.push_back(Pair("scriptPubKey", HexStr(scriptPubKey.begin(), scriptPubKey.end())));
-        entry.push_back(Pair("amount", ValueFromAmount(out.tx->tx->vout[out.i].nValue)));
-        entry.push_back(Pair("confirmations", out.nDepth));
-        entry.push_back(Pair("spendable", out.fSpendable));
-        entry.push_back(Pair("solvable", out.fSolvable));
-        entry.push_back(Pair("safe", out.fSafe));
+        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);
+        entry.pushKV("safe", out.fSafe);
         results.push_back(entry);
     }
 
@@ -3229,9 +3229,9 @@ UniValue fundrawtransaction(const JSONRPCRequest& request)
     }
 
     UniValue result(UniValue::VOBJ);
-    result.push_back(Pair("hex", EncodeHexTx(tx)));
-    result.push_back(Pair("changepos", changePosition));
-    result.push_back(Pair("fee", ValueFromAmount(nFeeOut)));
+    result.pushKV("hex", EncodeHexTx(tx));
+    result.pushKV("changepos", changePosition);
+    result.pushKV("fee", ValueFromAmount(nFeeOut));
 
     return result;
 }
@@ -3373,14 +3373,14 @@ UniValue bumpfee(const JSONRPCRequest& request)
         throw JSONRPCError(RPC_WALLET_ERROR, errors[0]);
     }
     UniValue result(UniValue::VOBJ);
-    result.push_back(Pair("txid", txid.GetHex()));
-    result.push_back(Pair("origfee", ValueFromAmount(old_fee)));
-    result.push_back(Pair("fee", ValueFromAmount(new_fee)));
+    result.pushKV("txid", txid.GetHex());
+    result.pushKV("origfee", ValueFromAmount(old_fee));
+    result.pushKV("fee", ValueFromAmount(new_fee));
     UniValue result_errors(UniValue::VARR);
     for (const std::string& error : errors) {
         result_errors.push_back(error);
     }
-    result.push_back(Pair("errors", result_errors));
+    result.pushKV("errors", result_errors);
 
     return result;
 }