Major update! Added support for FantomCoin blocks

src/serialization/crypto.h

@@ -2,6 +2,10 @@
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
+#pragma once
+
+#include <vector>
+
 #include "serialization.h"
 #include "debug_archive.h"
 #include "crypto/chacha8.h"