All the existing methods I know of rely on a central authority of truth, not good for us on Nostr.

Not a fan of verification requiring ID either.

Not a fan of identity protection being something only available to "celebs."

It seems one step celebs *do* need to take is reserving their names on the big NIP-05 providers to at least make it a little harder - at least make a scammer set it up themselves on their own domain.

Another step might be utilizing something like Trust Rank like used at nostr.band and show users a warning the first time they zap someone below a certain score. I'm sure that would have it's own issues to work out.

Just spit balling ideas.