The original meet-up in Berlin Kreuzberg where Ethereum's co-founders and earliest builders gathered — months before mainnet launch. The seed from which every Devcon since has grown.
ÐΞvcon-0 was a five-day working meetup rather than a conference: the co-founders and earliest builders presented the pieces of the Ethereum design to each other in Berlin's Kreuzberg district months before mainnet. The archive holds ten recorded sessions from nine speakers, among them Vitalik Buterin on interoperability and scaling and Lefteris Karapetsas on the C++ client. Source: Devcon Archive (archive.devcon.org), checked 4 Sep 2026.
