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/1BF7F238 2016-03-01 [expires: 2017-03-26]
      Key fingerprint = 50B2 65B0 268C E07E 4E6B  BA59 17A3 8E62 1BF7 F238
uid                  CCC Office Key (CCC Mitgliederverwaltung, Key 2016) 
sub   4096R/D72113F3 2016-03-01 [expires: 2017-03-26]

The office is also available via snail mail at

Chaos Computer Club e.V.

Zeiseweg 9
D-22765 Hamburg


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