Fedimint developers successfully ran a single federation across three independent codebases from Eric Sirion, Cashu's thesimplekid, and the Fedimint team at the Ecash Hackday event in Berlin on September 30. Fedi CEO Obi Nwosu stated that this demonstration aims to address the software monoculture risk he previously raised after the Liquid and Coldcard incidents, enhancing the ecosystem's resilience for decentralized custody.