There is now the possibility to hash your identity proofs!
So instead of adding your OpenPGP fingerprint to a bio section, you could add:
$2y$10$iHfq6y9Y.9Jr2yLgMFpoDO2UjFVKhwO4xWgsYJe639yCdIgaLCSCS
Not shorter but definitely useful if you'd rather not have people find your #keyoxide profile!
Blog post: https://blog.keyoxide.org/hashing-identity-proofs/