For nm.debian.org, at 2025-03-21: For the past 3 months, I have worked with Joachim Wuttke on debugging portability issues in BornAgain. For this past work, Joachim Wuttke and I communicated using his https://jugit.fz-juelich.de/j.wuttke account on the Jugit Gitlab instance. We've recently exchanged a few mails, using the email address j.wuttke@fz-juelich.de which is the one they're using on nm.debian.org, and they signed their work and email using a GPG key with fingerprint B8E4 681A F6FF 5968 84F8 D88C 1286 80C7 8F7E F32F. 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 Joachim Wuttke as they present themselves on nm.debian.org is the rightful owner of both email j.wuttke@fz-juelich.de and GPG key B8E4 681A F6FF 5968 84F8 D88C 1286 80C7 8F7E F32F.