rpc: add miner tx hash to block header response

src/rpc/core_rpc_server.cpp

@@ -1382,6 +1382,7 @@ namespace cryptonote
     response.num_txes = blk.tx_hashes.size();
     response.pow_hash = fill_pow_hash ? string_tools::pod_to_hex(get_block_longhash(blk, height)) : "";
     response.long_term_weight = m_core.get_blockchain_storage().get_db().get_block_long_term_weight(height);
+    response.miner_tx_hash = string_tools::pod_to_hex(cryptonote::get_transaction_hash(blk.miner_tx));
     return true;
   }
   //------------------------------------------------------------------------------------------------------------------------------

src/rpc/core_rpc_server_commands_defs.h

@@ -84,7 +84,7 @@ namespace cryptonote
 // advance which version they will stop working with
 // Don't go over 32767 for any of these
 #define CORE_RPC_VERSION_MAJOR 2
-#define CORE_RPC_VERSION_MINOR 4
+#define CORE_RPC_VERSION_MINOR 5
 #define MAKE_CORE_RPC_VERSION(major,minor) (((major)<<16)|(minor))
 #define CORE_RPC_VERSION MAKE_CORE_RPC_VERSION(CORE_RPC_VERSION_MAJOR, CORE_RPC_VERSION_MINOR)
 
@@ -1234,6 +1234,7 @@ namespace cryptonote
       uint64_t num_txes;
       std::string pow_hash;
       uint64_t long_term_weight;
+      std::string miner_tx_hash;
       
       BEGIN_KV_SERIALIZE_MAP()
         KV_SERIALIZE(major_version)
@@ -1253,6 +1254,7 @@ namespace cryptonote
         KV_SERIALIZE(num_txes)
         KV_SERIALIZE(pow_hash)
         KV_SERIALIZE_OPT(long_term_weight, (uint64_t)0)
+        KV_SERIALIZE(miner_tx_hash)
       END_KV_SERIALIZE_MAP()
   };