diff --git a/src/primitives/block.cpp b/src/primitives/block.cpp
index 787302a70..f5a94ea85 100644
--- a/src/primitives/block.cpp
+++ b/src/primitives/block.cpp
@@ -16,7 +16,9 @@ extern "C" void cn_slow_hash(const void *data, size_t length, char *hash, int va
 
 uint256 CBlockHeader::GetHash() const
 {
-    return SerializeHash(*this);
+    CHashWriter hashWriter(SER_GETHASH, PROTOCOL_VERSION);
+    hashWriter.write(BEGIN(nVersion), 80);
+    return hashWriter.GetHash();
 }
 
 uint256 CBlockHeader::GetPoWHash() const
@@ -33,13 +35,10 @@ uint256 CBlockHeader::GetPoWHash() const
     // following XOR operatiosn, the value of expectedHash is not changed.
     blockHash ^= expectedHash;
     expectedHash ^= blockHash;
-    CryptoNoteHeader header = cnHeader;
+    CryptoNoteHeader cnHeaderCompute = cnHeader;
     // Cryptonote prev_id is used to store kevacoin block hash.
-    header.prev_id = ArithToUint256(expectedHash);
-
-    CDataStream stream(SER_NETWORK, PROTOCOL_VERSION);
-    stream << header;
-    std::string blob = stream.str();
+    cnHeaderCompute.prev_id = ArithToUint256(expectedHash);
+    cryptonote::blobdata blob = cryptonote::t_serializable_object_to_blob(cnHeaderCompute);
     cn_slow_hash(blob.data(), blob.size(), BEGIN(thash), 2, 0, 0);
     return thash;
 }
diff --git a/src/primitives/block.h b/src/primitives/block.h
index e74ebc358..588603049 100644
--- a/src/primitives/block.h
+++ b/src/primitives/block.h
@@ -49,7 +49,28 @@ public:
         return (timestamp == 0);
     }
 
-    BEGIN_SERIALIZE()
+    // load
+    template <template <bool> class Archive>
+    bool do_serialize(Archive<false>& ar)
+    {
+      VARINT_FIELD(major_version)
+      VARINT_FIELD(minor_version)
+      VARINT_FIELD(timestamp)
+      crypto::hash prev_hash;
+      FIELD(prev_hash)
+      memcpy(prev_id.begin(), &prev_hash, prev_id.size());
+      FIELD(nonce)
+      crypto::hash merkle_hash;
+      FIELD(merkle_hash)
+      memcpy(merkle_root.begin(), &merkle_hash, merkle_root.size());
+      VARINT_FIELD(nTxes)
+      return true;
+    }
+
+    // store
+    template <template <bool> class Archive>
+    bool do_serialize(Archive<true>& ar)
+    {
       VARINT_FIELD(major_version)
       VARINT_FIELD(minor_version)
       VARINT_FIELD(timestamp)
@@ -57,16 +78,33 @@ public:
       memcpy(&prev_hash, prev_id.begin(), prev_id.size());
       FIELD(prev_hash)
       FIELD(nonce)
-    END_SERIALIZE()
+      crypto::hash merkle_hash;
+      memcpy(&merkle_hash, merkle_root.begin(), merkle_root.size());
+      FIELD(merkle_hash)
+      VARINT_FIELD(nTxes)
+      return true;
+    }
 
     ADD_SERIALIZE_METHODS;
 
     template <typename Stream, typename Operation>
     inline void SerializationOp(Stream& s, Operation ser_action) {
-        std::string blob = cryptonote::t_serializable_object_to_blob(*this);
-        blob.append(reinterpret_cast<const char*>(merkle_root.begin()), merkle_root.size());
-        blob.append(tools::get_varint_data(nTxes + 1));
-        READWRITE(blob);
+        if (ser_action.ForRead()) {
+            std::string blob;
+            READWRITE(blob);
+            std::stringstream ss;
+            ss << blob;
+            // load
+            binary_archive<false> ba(ss);
+            ::serialization::serialize(ba, *this);
+        } else {
+            std::stringstream ss;
+            // store
+            binary_archive<true> ba(ss);
+            ::serialization::serialize(ba, *this);
+            std::string blob = ss.str();
+            READWRITE(blob);
+        }
     }
 };
 
diff --git a/src/rpc/mining.cpp b/src/rpc/mining.cpp
index 17c1c07a6..e6ca97f9c 100644
--- a/src/rpc/mining.cpp
+++ b/src/rpc/mining.cpp
@@ -661,7 +661,7 @@ UniValue submitblock(const JSONRPCRequest& request)
     block.cnHeader.prev_id = CryptoHashToUint256(cnblock.prev_id);
 
     block.cnHeader.nonce = cnblock.nonce;
-    crypto::hash tree_root_hash = get_tx_tree_hash(cnblock);
+    crypto::hash tree_root_hash = cryptonote::get_tx_tree_hash(cnblock);
     block.cnHeader.merkle_root = CryptoHashToUint256(tree_root_hash);
     uint256 hash = block.GetHash();