The Critical Decentralisation Cluster (CDC) returns to the 40th Chaos Communication Congress in Hamburg (Germany) during Dec 27-30 2026. We will bring together assemblies and projects that challenge centralized infrastructures with decentralised, privacy-preserving and open hardware approaches. Expect talks, workshops and lots of hallway conversations around cypherpunk futures.

Assemblies, sessions and our location will be announced here.

sessions

Submissions open at pretalx.riat.at
Deadline: December 19th 2026 23:59 CET

The CDC will have at least 2 workshop areas with public schedule.
The main area will be equipped with a mini-stage and recording equipment for short talks. The secondary ones will have screens and no recording.

We invite our assemblies and any other project fitting the cluster themes’ to join in, use our spaces and share their knowledge.

assemblies

  • RIAT - independent research institute in Vienna
  • Namecoin - decentralized tamper-resistant naming system + PKI
  • Radicle - peer-to-peer code collaboration stack built on Git
  • GNU Boot - de-shittification for your BIOS and UEFI
  • Darknet PKI - public key infrastructure on top of Tor and I2P
  • Iroh - library and protocol stacks to build next-gen P2P networks
  • Sibermerdeka - hackerspace in Kuala Lumpur
  • FunkFeuer Wien - community-run wireless mesh network and ISP
  • Replicant - fully free Android distribution
  • Reticulum - resilient cryptography-based networking stack
  • BORDEL - hackerspace in Prague
  • XMPP - the open standard for messaging and presence

contacts