Subema on Nostr: Well, you never show it, of course! It's just something you made in your head in case ...

Well, you never show it, of course! It's just something you made in your head in case someone claims to be you or claims to have cloned you. If it turned out to be really true, you can burn the secret in the attempt to find the truth. If you need to use that secret more than once, you're on a different level of problems entirely.