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 Verifiable Key Management and TEEs with TurnkeyZK Tech,ZK Applications01.10.2025 Zerocoin to zk-creds: Modern ZK History with Ian MiersPrivacy,ZK Applications,ZK in BTC24.09.2025 Evolving ZK Identity from Iden3 to Privado & BillionsZK Applications,ID,Wallets17.09.2025 check our ZK JOB boards