diff --git a/src/Makefile.bench.include b/src/Makefile.bench.include
--- a/src/Makefile.bench.include
+++ b/src/Makefile.bench.include
@@ -30,6 +30,7 @@
   bench/gcs_filter.cpp \
   bench/merkle_root.cpp \
   bench/mempool_eviction.cpp \
+  bench/rpc_blockchain.cpp \
   bench/rpc_mempool.cpp \
   bench/util_time.cpp \
   bench/base58.cpp \
diff --git a/src/bench/CMakeLists.txt b/src/bench/CMakeLists.txt
--- a/src/bench/CMakeLists.txt
+++ b/src/bench/CMakeLists.txt
@@ -53,6 +53,7 @@
 	merkle_root.cpp
 	prevector.cpp
 	rollingbloom.cpp
+	rpc_blockchain.cpp
 	rpc_mempool.cpp
 	util_time.cpp
 
diff --git a/src/bench/rpc_blockchain.cpp b/src/bench/rpc_blockchain.cpp
new file mode 100644
--- /dev/null
+++ b/src/bench/rpc_blockchain.cpp
@@ -0,0 +1,34 @@
+// Copyright (c) 2016-2019 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include <bench/bench.h>
+#include <bench/data.h>
+
+#include <rpc/blockchain.h>
+#include <streams.h>
+#include <validation.h>
+
+#include <univalue.h>
+
+static void BlockToJsonVerbose(benchmark::State &state) {
+    CDataStream stream(benchmark::data::block413567, SER_NETWORK,
+                       PROTOCOL_VERSION);
+    char a = '\0';
+    // Prevent compaction
+    stream.write(&a, 1);
+
+    CBlock block;
+    stream >> block;
+
+    CBlockIndex blockindex;
+    const auto blockHash = block.GetHash();
+    blockindex.phashBlock = &blockHash;
+    blockindex.nBits = 403014710;
+
+    while (state.KeepRunning()) {
+        (void)blockToJSON(block, &blockindex, &blockindex, /*verbose*/ true);
+    }
+}
+
+BENCHMARK(BlockToJsonVerbose, 10);