Yep, as it has been said WKD is definitely the way to go. If one doesn’t control their domain https://keys.openpgp.org is an alternative but with some caveats.
As for “OpenPGP key based verification of accounts” that Sheogorath mentioned this is something that I took from Keybase, tweaked a little and made decentralized.
Check out this page: https://metacode.biz/openpgp/key#0x653909A2F0E37C106F5FAF546C8857E0D8E8F074 It’s completely generated from my OpenPGP key fetched from https://keys.openpgp.org
Currently there are no pretty wizards to add proofs to your keys so it’s manually adjusting your social profiles (GitHub, HackerNews, Mastodon, etc.) and manually adding proof links to your OpenPGP key. For details see: https://github.com/wiktor-k/openpgp-proofs#for-users
If you then push your updated key to https://keys.openpgp.org the key info page will generate something similar to my key.
Ooops, forgot to mention Rob on that one 👆
In short: I did a PoC on keybase-like social proofs.
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