The Office

Like every large organisation the Chaos Computer Club doesn't get by some bureaucracy. The office manages all your matters regarding your membership or Datenschleuder subscription.

From the office, to identify you easily, you'll get a small (at the time 5 digit) number assigned. We call this number Chaosnummer (chaos number) and almost doesn't hurt at all. Once you became a member the office will make sure that your name appears on your designated Datenschleuder and the cash desks at the Congresses and Camps knows to give you a discount. If you let the payments slide for too long the office might send you friendly payment reminders as well.

You can get in touch with the office via e-mail at, and we recommend -as for any e-mail communication- to encrypt your e-mails to us using PGP (our key). The current key's fingerprint is:

pub   4096R/129FDF75 2014-03-11 [expires: 2015-03-19]
Key fingerprint = E0FF F5BD C953 22A1 A3AC 428E 9553 98C8 129F DF75
uid CCC Office Key (CCC Mitgliederverwaltung, Key 2014) <>
sub 4096R/F3A68AC3 2014-03-11 [expires: 2015-03-19]

The office is also available via snail mail at

Chaos Computer Club e.V.

Humboldtstraße 53
D-22083 Hamburg


Before you contact the office please check quickly in our membership section or in our FAQ. Maybe your question is answered there already.