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 RECENT EPISODES Year in Review: ZK Podcast in 2025 & Beyond03.12.2025 Lattices, Folding, & Symphony with Binyi Chen19.11.2025 The Quest for Practical iO with Machina iO12.11.2025 check our ZK JOB boards