You could certainly do that with PGP. That would just be the key fingerprint. You would have to go look up the actual "PGP public key" after that. You could use

You could certainly do that with PGP. That would just be the key fingerprint. You would have to go look up the actual "PGP public key" after that. You could use web key directory (WKD) to make it transparent. Since secp256k1 doesn't support encryption there would have to be a lookup in that case as well. I like this idea. Eventually we are going to have to come to terms with the fact that there is going to be a ridiculously long number and that number is the identity. We can't hide this fact from the user and hope that things are going to work out.