var blockHash = bitcoreUtil.formatHashFull(block.calcHash());
  var check =  blockHash.substring(0, 4);
  if (check != '0000') {
      console.log("Scrypt block detected. Falling back to RPC");
    self.historicSync.start({forceRPC:1}, function(){
        sockets.broadcastSyncInfo(self.historicSync.info());
            self.log('[p2p_sync] Done resync.');
        });
  return;
  }