SHAREIn this episode, we sit down with Ethan (Bucky) Buchman, co-founder & CTO of Tendermint, to talk about testnets. We look into what they are, what purpose they serve and cover examples from Bitcoin, Ethereum, Cosmos and Polkadot. Links Testnets on Karl.tech The latest gossip on BFT consensus Bitcoin Testnet Ropsten Testnet Kovan Testnet Rinkeby Testnet Join the Cosmos testnet Join the Polkadot testnet ← Previous Episode → Next Episode RECENT EPISODES Stateful ZK Identity with Ian MiersResearch,Privacy,ZK Applications04.02.2026 Bonus: Join zkMesh+ for some bonus podcast content!Bonus29.01.2026 Sean Bowe on Tachyon and the Evolution of ZcashZK Tech,Privacy,ZK Applications21.01.2026 check our ZK JOB boards