Bitcoin Rails | Isabel Foxen Duke

The History of SegWit and Taproot | with Pieter Wuille

Bitcoin Rails | Isabel Foxen Duke

Show Notes

A primary maintainer of Bitcoin Core from 2011-2022, Pieter Wuille is arguably the most influential developer in Bitcoin’s history since Satoshi himself.

After receiving keys to the Bitcoin codebase from Gavin Andersen, who was tasked with maintaining the codebase by Satoshi Nakamoto, Pieter went on to implement some of Bitcoin’s most dramatic and influential upgrades—including but not limited to:

Implementation of Bitcoin’s Taproot and Segwit upgrades

Implementation of libsecp256k + Bitcoin’s unique encoding structure for the cryptography securing all Bitcoin public/private keys.

The first import/export feature for Bitcoin private keys into Bitcoin (now Bitcoin Core)

Development of hierarchical deterministic (HD) wallets, enabling backups via a single seedphrase and paving the way for seedphrases themselves

DER signatures, Miniscript, and so much more.

A truly special episode of Bitcoin Rails, this is a rare long-form interview with one of the most important historical figures in the arc of Bitcoin’s development.

Pieter and I walk through how Bitcoin consensus works in practice, the history of Bitcoin's most critical early developments, and the key role of his good friend, Greg Maxwell, nearly every step of the way.

This episode of Bitcoin Rails is powered by: — Best In Slot - the leading API for Ordinals and BRC-20 data aggregation and indexing. — Spark - a statechains implementation advancing Bitcoin-powered payments. — Citrea - a leading Bitcoin rollup technology and BitVM alliance contributor.

More from Bitcoin Rails | Isabel Foxen Duke

Oct 8, 2026

There are few people as close to the frontlines of Bitcoin privacy as Cake Wallet COO Seth for Privacy. After cutting his teeth building for Monero, Seth turned his focus to Bitcoin in 2022, with the view that making Bitcoin more private would ultimately help more people than focusing on a smaller niche target group alone.

Sep 24, 2026

Isabel Foxen Duke sits down with [[alloc] init] co-founder Misha Komarov and Head of Protocol Research Clara Shikhelman to examine PIPEs, a cryptographic framework that utilizes witness encryption—a primitive long dismissed as purely theoretical—to unlock advanced Bitcoin programming without a soft fork.

Aug 27, 2026

The first fully specified post-quantum signature scheme for Bitcoin has been proposed to the Bitcoin mailing list.

Aug 25, 2026

To date, post-quantum Bitcoin discussions have largely centered on which digital signature schemes offer the strongest cryptographic security against a quantum adversary.

Aug 7, 2026

Paul Sztorc founder and CEO of LayerTwo Labs and author of Bitcoin Improvement Proposals 300 and 301 (Drivechains), has been one of Bitcoin's most persistent—and controversial—thinkers, advocating for merge-mined sidechains as a way to dramatically expand Bitcoin's functionality while preserving the security of the base layer.

See all episodes →