Depends what you mean by "permanent", but for some purposes it can be a helpful workflow to generate a a "sumfile" using rclone hashsum with --output-file, then save this file and use it in the future to check against a live remote with the --checkfile option in rclone check. (May also want to add the --download option if detecting bit rot is your goal.)
What is not working about it? If you post details maybe we can help.