The Critical Decentralisation Cluster (CDC) is a group of likeminded assemblies working together to present projects, talks and workshops that critically discuss the future of decentralisation. You can visit us during Dec 27-30 2025 in Hamburg (Germany) at the 39th Chaos Communication Congress.
The CDC usually takes shape as an area in Hall H with:
- tables and seats for ca. 120 people
- 2 info tables and meeting spots
- 2 workshop areas with public schedule
- 1 recording area
Talks and workshops submissions are now open at pretalx.riat.at.
We welcome proposals from our assemblies and any other project fitting the cluster themes’ (decentralization, privacy & anonymity and open hardware).
assemblies
- RIAT - independent research institute in Vienna
- Monero Community
- Namecoin - decentralized tamper-resistant naming system + PKI
- Swiss Cryptoeconomics
- I2P - fully encrypted peer-to-peer overlay network
- Cyberraum - hackers’ group from Hamburg united in the quest to challenge the status quo
- Social Dist0rtion Protocol - ad-hoc riddles and games
- Firo - independent blockchain privacy and decentralization tech research
- FOSSASIA - open-source community in Asia
- Off-Grid Messaging - independent networks over LoRa and packet-radio
We welcome other assemblies in the categories Privacy & Anonymity, Enshittification, Cryptography, Open and Verifiable Hardware and Peer-to-Peer (P2P) networks and tools.
contacts
- Coordination and other talk at #cdc:dod.ngo community on Matrix.
All rooms are bridged to hackint IRC server:- Main room bridged to #cdc-38c3
- Coordination > #cdc-38c3-coordination
- Tickets > #cdc-38c3-ticketbörse
- Off-Grid Messaging > #38c3-off-grid-messaging
- Watercooler (off-topic) > #cdc-38c3-watercooler
- Email: c3 at RIAT’s domain.
contributing
- Volunteer work is essential to keep the cluster going. Tasks range from “keeping our tables tidy” all the way to “operating the A/V setup”. All assemblies should be proactive.
- Financial support enables us to build the tools we need. From the high tech recording setup down to low tech items such as furniture. Monero donations are welcomed: 8B5xvYLwUWsiwzNhBeZJkABRgPsYqsR3X8mHVWgphRqQVvM5khLYdfvgyZg2Rhub2uFnoSiVVKTgNKpvDUDVho2BQVyzEDC