Covenants, CTV and OP_CAT

S17 E47: Tabconf 8 Livestream with Kevin Loaec, Ekrem Bal, Spaces Protocol & The Bitcoin Pivot

On the last day of TABConf 8, I did another livestream from the hallways of Georgia Tech in Atlanta. The recording was…

S17 E46: Livestream from Tabconf 8, Part 1 (feat. Paul Sztorc, Andre Beganski, Alex Lewin, Janusz, Christopher Allen, Will & Michael Tidwell)

Live from the last TABConf: Paul Sztorc on quantum soft forks and eCash, Christopher Allen on multisig, Janusz on Zark and…

S17 E38: Keagan McClelland on Lightning Metrics, Covenants, Consensus Politics & Verifying Bitcoin

There is a certain genre of Bitcoin Twitter argument that never quite resolves into a conversation. People trade metrics, memes…

S17 E36: Yonatan Sompolinsky on Kaspa Covenants, DAGKnight & Coordination Markets

Yonatan Sompolinsky came to Europe for a reason he would only describe on record as a secretive meeting of DAGKnight magicians…

S17 E30: Martin Matejka on Firefish, BTC-backed Loans & Bitcoin’s Purpose

Three years ago, I walked into the Firefish office in Prague to interview two founders with a fresh idea: what if you…

S17 E26: Calin Culianu, Steve Thurmond & The Phenomenal Big Blockers on Nine Years of Bitcoin Cash

Almost nine years after the big split of the Bitcoin community, it was time. Time to sit down with the people who…

S17 E23: Hunter Beast & Mark Karpeles on Quantum-Proofing Bitcoin, Satoshi’s Coins & the Ghost of Mt. Gox

This interview took place on April 29th 2026, at the LayerTwo Labs booth at the Bitcoin Conference in Las Vegas with Hunter…

S17 E22: Jeremy Rubin on CTV, Char & Relentless Building in an Adversarial Environment

Four years. That is how long I have been chasing Jeremy Rubin for an interview, and it took the Bitcoin 2026 conference…

S17 E17: Lukas Hozda on Building Bitcoin in Rust & Why Mempool Filters Can’t Work

Recorded in a soundproofed room at Braiins headquarters in Prague that once doubled as an ASIC oven (more on that later), this…

S17 E14: Kristian Csepcsar on the History of Bitcoin Mining, Braiins Hashpower & the Centralization Nobody Talks About

Editor’s note: this conversation was recorded in person at the undisclosed Braiins office in Prague, most likely in March 2026…

S17 E13: Charlie Spears on Blockspace Media, the Purity Spiral & the Case for Classical Maximalism

Editor’s note: this conversation was streamed live in mid-March 2026, a week after the US switched to daylight saving time (which…

S15 E58: Liam Eagen, Robin Linus & Jonas Nick on Shielded CSV, Private Client-Side Validation & the Future of Bitcoin Privacy

Liam Eagen, Robin Linus and Jonas Nick explain Shielded CSV: private client-side validation with ZK proofs, BitVM bridges…

S15 E57: Orkun Kilic on Citrea, ZK Rollups & Building the Bitcoin Economy

Days after the Citrea testnet launch, Orkun Kilic explains ZK rollups vs sidechains, BitVM's trust model, drivechains, StarkWare…

S15 E54: Kruw on Running a Wasabi Coordinator, Blockchain Analysis & the Myths of Bitcoin Privacy

Kruw runs Wasabi's biggest coinjoin coordinator for zero fees. He explains how blockchain analysis works, Samourai's double…

S15 E52: Ben Arc on the Future of Lightning, Bitcoin & Nostr

LNbits creator Ben Arc says Lightning is only 5% done, explains why ecash mints worry him, and shares his plans for LNbits, Boltz…

S15 E50: Murch on Popular Bitcoin Myths: Ordinals, OP_CAT, Zero-Conf & the 2140 Panic

Murch of Chaincode Labs and Bitcoin Stack Exchange busts popular Bitcoin myths: ordinals as spam, a captured Bitcoin Core…

S15 E49: Edan Yago on BitcoinOS, Permaware & Scaling Bitcoin with ZK Rollups

Edan Yago explains BitcoinOS, BitSNARK and the first ZK proof verified on Bitcoin mainnet, why rollups beat sidechains, and why…

S15 E43: Sergio Demian Lerner on BitVMX, Rootstock & Layer 2s

Sergio Demian Lerner explains BitVMX, a RISC-V take on BitVM that cuts dispute costs to ~$400, plus Rootstock vs. Liquid, blind…

S15 E40: Rijndael on Taproot Wizards, BIP420 & OP_CAT

Rijndael (CTO of Taproot Wizards) on OP_CAT, BIP420, Quantum Cats, covenants, Lightning limits, Ordinals flywheels, and why…

S15 E25: Nicholas Gregory & Tom Trevethan on MercuryLayer, Blinded Statechains & Lightning

Nicholas Gregory and Tom Trevethan explain MercuryLayer: blinded statechains, whole-UTXO swaps, Lightning Latch, and where…

S15 E19: Alexei Zamyatin on Build on Bitcoin & Layer 2s

Alexei Zamyatin is a (recovering) academic cryptographer who co-founded the Build on Bitcoin project – an initiative which…

S15 E17: Andrew Poelstra on Bitcoin Covenants (OP_CAT vs OP_CTV)

As of February 2023, there seems to be a consensus among users that Bitcoin needs covenants. And Andrew Poelstra, as Director of…

S15 E6: John Light, Super Testnet & Alexei Zamyatin on Improving Bitcoin

Bitcoin is still a young project that’s bound for disruption. While the money layer is supposed to never change, the advancements…

S15 E16: Paul Sztorc Talks Bitcoin Scaling, But Can’t Say Drivechains

A drunkast with Paul Sztorc about scaling Bitcoin: covenants, BitVM, Lightning, Rootstock and Liquid, discussed without him being…

S14 E19: Martin and Igor on Firefish, a Bitcoin-Backed Lending Platform

Firefish is an ambitious project which takes on the massive challenge to create a trust-minimized version of BlockFi or Celsius…

S13 E3: Casey Rodarmor on Ordinals, Inscriptions & Bitcoin Culture

Ordinal inscriptions are all the rage. They obsoleted the concept of NFTs by offering artists a permanent way to display their…