For nm.debian.org, at 2021-02-28:
For the past 7 years, I have worked with Markus Schade on yadifa and nsd.
For this past work, Markus Schade sent mails using the email address firstname.lastname@example.org
which is the one they're using on nm.debian.org, and they signed their work and
email using a GPG key with fingerprint 6694 5D2C 7458 AA54 4C7F F194 9FBB 5B02 7967 4636.
I've made sure that they are able to decrypt encrypted messages sent to this key
and that they're able to sign messages with the same key.
Due to the long-term interactions we had, I'm convinced that Markus Schade as they
present themselves on nm.debian.org is the rightful owner of both email
email@example.com and GPG key 6694 5D2C 7458 AA54 4C7F F194 9FBB 5B02 7967 4636.