.
//
// Also add information on how to contact you by electronic and paper mail.
//
// If your software can interact with users remotely through a computer network,
// you should also make sure that it provides a way for users to get its source.
// For example, if your program is a web application, its interface could display
// a "Source" link that leads users to an archive of the code. There are many
// ways you could offer source, and different solutions will be better for different
// programs; see section 13 for the specific requirements.
//
// You should also get your employer (if you work as a programmer) or school,
// if any, to sign a "copyright disclaimer" for the program, if necessary. For
// more information on this, and how to apply and follow the GNU AGPL, see
Decentralized OpenPGP identity proofs are the brainchild of Wiktor who wrote the original guide on his website (a suggested read to get first-hand information).
Unlike proofs provided by for example Keybase, OpenPGP proofs are stored inside the PGP keys themselves instead of being mere signatures. Since this operation requires keys with "certify" capabilities and not simply "sign" capabilities, these OpenPGP proofs could be considered more secure.
Every OpenPGP identity proof is stored in the PGP key as a notation that looks like this:
proof@metacode.biz=https://twitter.com/USERNAME/status/1234567891234567891
This particular proof is for a Twitter account (read more in the Twitter guide). Let's analyse the notation:
The proof should always link to a document that can be parsed as JSON to make the verification easy and feasible by the browser. Sometimes however, due to CORS restrictions or API requirements (as is the case for Twitter), no such link is provided by the platform. In these rare exceptional cases, the verification process is delegated to the Keyoxide server which will communicate directly with the platform's servers to get the content of the post.
If you'd like to add decentralized OpenPGP identity proofs to your key, go to the guides and find the right one for your platform of choice. You may find the process to be remarkably easy.
If your platform is not in the list of guides, it's not supported yet. See the contributing guide for more information on how to get that platform supported.