Not by itself, though. I don't know who nostr:nprofile1qqsyeqqz27jc32pgf8gynqtu90d2mxztykj94k0kmttxu37nk3lrktcpz9mhxue69uhkummnw3ezumrpdejz7qg3waehxw309ahx7um5wgh8w6twv5hsz9mhwden5te0d4kx26m49ehx7um5wgcjucm0d5hspyest0 is in the Real World, so I need a solution that can tie that pubkey to a person I want to, e g., but something from.

But if, e.g., I had signatures on an attestation of RW identity from, say, four other accounts whose judgement I trust, that would be great.

With PGP, despite having a clear way to sign other folks' keys, this never became really usable. But maybe this time will be different…