I already have a keybase account. I've been interested in getting git commit signing setup with my keybase pgp key. I quickly found a nice guide that worked well. See: https://meedamian.com/post/keybase-signed-github
After following the guide, git now shows my commits as signed. Example:
bgianf@LMAO:~/src/lab-notebook/src$ git log --show-signature -1 commit be372efa95c64ef4a71e2b06e69baf47d275923f (HEAD -> main, origin/main, origin/HEAD) gpg: Signature made Tue Dec 29 21:14:34 2020 PST gpg: using RSA key 899C11E2EEAA2EEE43775D148802D4B232E81AFA gpg: checking the trustdb gpg: marginals needed: 3 completes needed: 1 trust model: pgp gpg: depth: 0 valid: 1 signed: 0 trust: 0-, 0q, 0n, 0m, 0f, 1u gpg: Good signature from "Brian Gianforcaro (http://bjg.io) <email@example.com>" [ultimate] gpg: aka "keybase.io/bjg <firstname.lastname@example.org>" [ultimate] Author: Brian Gianforcaro <email@example.com> Date: Tue Dec 29 21:12:47 2020 -0800 Notes: Add note about signing commits with keybase pgp keys
GitHub displays these with the VERIFIED qualifier.