code: function validateSignedMessageSync(objSignedMessage){
  	var err;
  	var bCalledBack = false;
  	validateSignedMessage(objSignedMessage, function(_err){
  		err = _err;
  		bCalledBack = true;
  	});
  	if (!bCalledBack)
  		throw Error("validateSignedMessage is not sync");
  	return err;
  }
docs: inconsistent for multisig addresses