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

Update the Hackernews account

Log in to Hackernews and click on your username.

Add the following lines to your about (make sure to replace FINGERPRINT):

This is an OpenPGP proof that connects my OpenPGP key to this Hackernews 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 USERNAME):

proof@metacode.biz=https://news.ycombinator.com/user?id=USERNAME

Save the key:

save

Upload the key to the HKP servers (make sure to replace FINGERPRINT):

gpg --send-keys FINGERPRINT

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