struct NftGuardConstState {
  bytes collectionScript;
  int[6] localIdArray;
}

library NftGuardProto {
  static function stateHash(NftGuardConstState _state) : bytes {
    bytes inputOutpointAll = _state.collectionScript;
    loop (6) : i {
        inputOutpointAll += pack(_state.localIdArray[i]);
      }
    return hash160(inputOutpointAll);
  }
}