For nm.debian.org, at 2021-11-09:
For the past several years (roughly: since late 2018), I have worked with
Geoffroy Youri Berret (kaliko) on the mpd-team, packaging MPD as well as some
of its clients (ncmpc, libmpdclient).
For this past work, Geoffroy Youri Berret sent mails using the email address
firstname.lastname@example.org and sometimes email@example.com, and they consistently signed
their email using a GPG key with fingerprint 2255 310A D1A2 48A0 7B59 7638
065F E539 32DC 551D.
Due to the long-term interactions we had, I'm convinced that Geoffroy Youri
Berret as they present themselves on nm.debian.org is the rightful owner of
both email firstname.lastname@example.orgemail@example.com and GPG key 2255 310A D1A2 48A0
7B59 7638 065F E539 32DC 551D.