Add gitea guide

guides/gitea.md

@@ -0,0 +1,49 @@
+# Adding a Gitea proof
+
+Let's add a decentralized Gitea proof to your OpenPGP keys. This will also work on self-hosted instances.
+
+[[toc]]
+
+## Post a Gitea proof message
+
+Log in to a gitea instance like [codeberg.org](https://codeberg.org) and click on **Create new repository**.
+
+Set the repository name to **gitea_proof**.
+
+Set the project description to (make sure to replace FINGERPRINT):
+
+```
+[Verifying my OpenPGP key: openpgp4fpr:FINGERPRINT]
+```
+
+Optional: edit the README.md to this:
+
+```
+This is an OpenPGP proof that connects my OpenPGP key to this Gitea account. For details check out https://keyoxide.org/guides/openpgp-proofs
+```
+
+After creating the project, copy the link to the project.
+
+## 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 with the link to the project copied above):
+
+`proof@metacode.biz=https://gitea.example.com/USERNAME/gitea_proof`
+
+Save the key:
+
+`save`
+
+Upload the key to WKD or use the following command to upload the key to [keys.openpgp.org](https://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 verified Gitea account.