// Write text by txID
func write(stub shim.ChaincodeStubInterface, args []string) peer.Response {
    var logger = shim.NewLogger("chaincode")
    if len(args) != 1 {
        return shim.Error("Parameter Mismatch")
    }

    if err := stub.PutState(stub.GetTxID(), []byte(args[0])); err != nil {
        return shim.Error(err.Error())
    }

    logger.Info(args[0])
    return shim.Success(nil)
}