Where would the verification of an npub from another npub be stored?
Discussion
All attested to values of another user's metadata are duplicated and stored in the attestation event. The event is either encrypted or public. For a user's own attestations, a lock icon could appear on the profile image; this would be awesome, I think.
Alright, then one could even have backups on a local relay. This certainly aounds like a NIP worthy of some discussion :)