Let's add a decentralized Pleroma proof to your OpenPGP keys.

Update the Pleroma account

Log in to your Pleroma instance and add the following lines to your Bio (make sure to replace FINGERPRINT):

This is an OpenPGP proof that connects my OpenPGP key to this Pleroma account. For details check out https://keyoxide.org/guides/openpgp-proofs

[Verifying my OpenPGP key: openpgp4fpr:FINGERPRINT]

Update the PGP key

First, edit the key (make sure to replace FINGERPRINT):

gpg --edit-key FINGERPRINT

Add a new notation:

notation

Enter the notation (make sure to update the link):

proof@metacode.biz=https://INSTANCE.ORG/users/@USERNAME

Please note that the /users/ part of the URL is mandatory for the proof to work.

Save the key:

save

Upload the key to WKD or keys.openpgp.org (make sure to replace FINGERPRINT):

gpg --send-keys FINGERPRINT

And you're done! Reload your profile page, it should now show a verified Fediverse account (Pleroma is part of the Fediverse).