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 Year in Review: ZK Podcast in 2025 & BeyondRecaps03.12.2025 Pratyush Mishra on Tiny Proofs, Folding, Low-Memory SNARKs and Mo...ZK Applications,ZK Tech,Research26.11.2025 Lattices, Folding, & Symphony with Binyi ChenZK Tech,Research,Lattice-based19.11.2025 check our ZK JOB boards