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

Add a message to your XMPP vCard

Using a XMPP client that supports editing the vCard (such as Dino and Gajim), append the following message to the About section (make sure to replace FINGERPRINT):

This is an OpenPGP proof that connects my OpenPGP key to this XMPP 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 replace JABBERID):

proof@metacode.biz=xmpp:JABBERID

Save the key:

save

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

gpg --keyserver hkps://keys.openpgp.org --send-keys FINGERPRINT

And you're done! Reload your profile page, it should now show a XMPP account.