This is the correct answer. Hashing can happen at many different layers in the app or even as a ephemeral Postgres function call in the database. Storing hashe

This is the correct answer. Hashing can happen at many different layers in the app or even as a ephemeral Postgres function call in the database. Storing hashes is not storing secrets. If one has to worry about exposing the lock to public, then there is something wrong with the security of that lock. Use a better lock.