diff --git a/src/core_io.h b/src/core_io.h
index cc885a9c49..3a06c3af4b 100644
--- a/src/core_io.h
+++ b/src/core_io.h
@@ -15,6 +15,7 @@
 class CBlock;
 class CBlockHeader;
 class CScript;
+struct CScriptWitness;
 class CTransaction;
 struct CMutableTransaction;
 class uint256;
@@ -45,6 +46,7 @@ int ParseSighashString(const UniValue& sighash);
 UniValue ValueFromAmount(const CAmount amount);
 std::string FormatScript(const CScript& script);
 std::string EncodeHexTx(const CTransaction& tx, const int serializeFlags = 0);
+UniValue EncodeHexScriptWitness(const CScriptWitness& witness);
 std::string SighashToStr(unsigned char sighash_type);
 void ScriptPubKeyToUniv(const CScript& scriptPubKey, UniValue& out, bool fIncludeHex, bool include_addresses);
 void ScriptToUniv(const CScript& script, UniValue& out, bool include_address);
diff --git a/src/core_write.cpp b/src/core_write.cpp
index c763e52f7b..c8ed99d7eb 100644
--- a/src/core_write.cpp
+++ b/src/core_write.cpp
@@ -169,6 +169,15 @@ std::string EncodeHexTx(const CTransaction& tx, const int serializeFlags)
     return HexStr(ssTx);
 }
 
+UniValue EncodeHexScriptWitness(const CScriptWitness& witness)
+{
+    UniValue witness_hex(UniValue::VARR);
+    for (const auto &item : witness.stack) {
+        witness_hex.push_back(HexStr(item));
+    }
+    return witness_hex;
+}
+
 void ScriptToUniv(const CScript& script, UniValue& out, bool include_address)
 {
     out.pushKV("asm", ScriptToAsmStr(script));
diff --git a/src/rpc/blockchain.cpp b/src/rpc/blockchain.cpp
index 69a38545b4..90fd14b18b 100644
--- a/src/rpc/blockchain.cpp
+++ b/src/rpc/blockchain.cpp
@@ -216,9 +216,11 @@ UniValue blockheaderToJSON(const CBlockIndex* tip, const CBlockIndex* blockindex
         result.pushKV("difficulty", GetDifficulty(blockindex));
         result.pushKV("chainwork", blockindex->nChainWork.GetHex());
     } else {
-        result.pushKV("signblock_witness_asm", ScriptToAsmStr(blockindex->proof.solution));
-        result.pushKV("signblock_witness_hex", HexStr(blockindex->proof.solution));
-        if (!blockindex->dynafed_params.IsNull()) {
+        if (blockindex->dynafed_params.IsNull()) {
+            result.pushKV("signblock_witness_asm", ScriptToAsmStr(blockindex->proof.solution));
+            result.pushKV("signblock_witness_hex", HexStr(blockindex->proof.solution));
+        } else {
+            result.pushKV("signblock_witness_hex", EncodeHexScriptWitness(blockindex->m_signblock_witness));
             result.pushKV("dynamic_parameters", dynaParamsToJSON(blockindex->dynafed_params));
         }
     }