Create the proof
Log in to any of the StackExchange websites, go to Edit profile and add the proof to your About me section.
An example of a proof:
The following proof formats are supported:
When done, copy the link to your profile page.
Add the claim…
The claim looks as follows:
Make sure to replace USERID and USERNAME.
…to a signature profile:
Follow the instructions provided here. The claim should look like:
…to an OpenPGP profile:
Follow the instructions provided here. The notation should look like: