
Bitcoin's threshold for trust-minimization—without a soft fork | SAM BLACKSHEAR
From Bitcoin Rails | Isabel Foxen Duke by Isabel Foxen Duke
June 4, 2026 · 58 min
About this episode
Sam Blackshear discusses the technical challenges of Bitcoin and the potential of Mysten Labs' Hashi architecture for trust-minimized bridging.
Some of the most impressive technical and commercial leaders in digital assets emerged from what insiders call the "Libra Mafia" — the team assembled by Meta to build Libra (later Diem). Though the project ultimately succumbed to regulatory pressure, it produced a generation of founders and engineers who went on to shape the industry, including Sam Blackshear, a leading expert in blockchain programming languages and CTO of Mysten Labs. In this episode of Bitcoin Rails, Sam joins me to discuss: why Mysten Labs has turned its focus toward Bitcoin + why Sam leans conservative on soft-fork changes to Bitcoin script what makes a strong crypto programming language + why EVM is missing the mark\ why trust minimization remains the critical technical challenge standing between Bitcoin and broader DeFi adoption Why Mysten Lab's new Hashi architecture may be the most trust-minimized architecture for Bitcoin "bridging" without a soft fork This episode of Bitcoin Rails is brought to you by: LayerTwo Labs — developing research, software, and technologies for scaling Bitcoin via the integration of Drivechains (BIP 300/301) Hashi on Sui Network — a primitive for executing Bitcoin Defi…
People in this episode
Host: Isabel Foxen Duke
Guest: Sam Blackshear
Topics covered
- Bitcoin
- trust-minimization
- blockchain programming languages
- DeFi adoption
- soft-fork changes
- Hashi architecture
Keywords
- Bitcoin
- trust-minimization
- soft-fork
- blockchain
- DeFi
- Hashi
- Mysten Labs
- Libra Mafia
Sponsors
LayerTwo Labs, BitBox
Mentioned in this episode
Organizations: Meta, Mysten Labs
Products: Hashi, BitBox
Books & works: Bitcoin Rails
More episodes of Bitcoin Rails | Isabel Foxen Duke
- Bitcoin's 3 Biggest Challenges | NEHA NARULA · May 27, 2026 · 1h 23m
- Post-Quantum Cryptography For Bitcoin | DAN BONEH · May 20, 2026 · 1h 44m
- Breaking Down Digital Payments | DAVID MARCUS · May 12, 2026 · 59 min
- Post-Quantum Bitcoin Signatures (+ their tradeoffs) | ETHAN HEILMAN & JONAS NICK · May 5, 2026 · 1h 18m
- DRIVECHAINS AUTHOR TO HARDFORK BITCOIN I with PAUL SZTORC · April 24, 2026 · 1h 28m
- Bitcoin Mining's Heatpunk Revolution | TYLER STEVENS · April 14, 2026 · 1h 12m
Explore listener stats, chart rankings, contacts and more on the Bitcoin Rails | Isabel Foxen Duke podcast page.