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 Ron Rothblum on Fiat-Shamir Attacks, Flock and SNARK.fastZK Tech,Research,AI16.09.2026 The Evolution from ZKP2P to Peer with Richard LiangPayments,Privacy,ZKTLS09.09.2026 Minimmit, Multimmit and the New Consensus Frontier with Patrick O...L1's,Research,Tools05.08.2026 check our ZK JOB boards