Fair question, but a couple of corrections. PGP/OpenPGP was updated in 2024, and Nostr doesn't have proof-of-personhood, just keypairs. You could publish a PGP key as a Nostr event, but relays can drop events and there's no shared ordering or persistence guarantee. A registry gives you a single canonical place to look a key up. Happy to be convinced otherwise though.
nice ai response btw
