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21 in 21

Education

21 in 21

Hosted by Haley Berkoe

21 in 21: Patrick Ball on Using Bitcoin and AI to Defend Human Rights

July 02, 2026 5:39pm 22 min

Patrick Ball, Director of Research at the Human Rights Data Analysis Group, joins Haley Berkoe on 21 in 21 to discuss how data, bitcoin, and AI can help defend human rights. Patrick explains how his team uses statistics ...

21 in 21: Calle on Cashu, Clawi, and AI Agents

May 21, 2026 11:45am 22 min

On this episode of 21 in 21, Calle discusses his work on Cashu, Bitchat, and Clawi. He explores how AI agents could use bitcoin-native payments and why privacy-preserving infrastructure matters in an increasingly agentic...

21 in 21: Linn Bieske on Hack-Nation and Building Global AI Communities

April 16, 2026 10:05am 26 min

Linn Bieske, Co-Lead of the AI & Technology Track at the MIT Club of Northern California (CNC), AI Product Manager, and Co-Founder of Hack-Nation, joins Haley Berkoe on 21 in 21. They discuss the upcoming Hack-Nation eve...

21 in 21: Rainey Reitman on Transaction Denied and Financial Censorship

April 07, 2026 9:46am 25 min

Rainey Reitman joins 21 in 21 for a conversation on financial censorship, free speech, and her new book, Transaction Denied: Big Finance’s Power to Punish Speech. Rainey co-founded Freedom of the Press Foundation and ser...

21 in 21: Michael Saylor on Bitcoin, AI, and Advice for Builders

March 19, 2026 8:53am 22 min

Michael Saylor joined Haley Berkoe on 21 in 21 for a rapid-fire conversation on bitcoin, AI, and what’s coming next. He shares what’s top of mind for 2026, why he sees this year as a major turning point, and how he think...

21 in 21: Andi Pitt on Bitcoin Venture, AI, and Cognitive Sovereignty

March 17, 2026 8:00am 24 min

Andi Pitt of Ego Death Capital joined me on 21 in 21 to talk about the rise of new startups in the bitcoin ecosystem, how the funding landscape has changed, and the growing intersection of bitcoin and AI. She also shares...

21 in 21: Mark Suman on Privacy-First AI

January 13, 2026 8:00am 22 min

Mark Suman, co-founder and CEO of Maple AI, a privacy-first AI chat platform known as “the Signal of AI,” joins Haley Berkoe on 21 in 21. Mark explains how Maple AI uses secure enclaves to deliver a ChatGPT-like experien...

21 in 21: David Gumberg on the Chaincode ₿OSS Challenge and Becoming a Bitcoin Core Contributor

December 17, 2025 8:00am 23 min

Haley Berkoe sits down with David Gumberg, a Bitcoin Core contributor at Localhost, a bitcoin-focused research center in the Bay Area. David shares how he got into bitcoin, what pushed him from curiosity to contribution,...

21 in 21: Rod Roudi

December 11, 2025 8:00am 24 min

In this episode of 21 in 21, Haley sits down with Rod Roudi, co-founder of Bitcoin Park in Nashville and Austin. Rod breaks down how Bitcoin Park began, why in-person energy fuels strong communities, and how Nashville gr...

21 in 21: Joe Carlo on How Bitcoin Changed Pink Owl Coffee Forever

October 30, 2025 1:51pm 24 min

Haley Berkoe sits down with Joe Carlo, co-owner of Pink Owl Coffee, a café that began in San Rafael, California, and has since expanded to three locations across the Bay Area. Pink Owl is one of the earliest Square merch...

21 in 21: Kyle Olney

October 28, 2025 7:00am 25 min

Kyle Olney joins Haley Berkoe to talk about defending bitcoin’s foundational freedoms. A longtime Silicon Valley product leader turned bitcoin advocate, Kyle helped launch Save Our Wallets, a coalition fighting for Secti...

21 in 21: Nick Slaney

October 20, 2025 11:38pm 22 min

In this episode of 21 in 21, Nick Slaney joins Haley Berkoe during Presidio Bitcoin Design Week. Nick is the founder of Money Dev Kit, a new startup building tools that make it easy for developers to add bitcoin and Ligh...

21 in 21: Erik Cativo

October 15, 2025 9:43am 25 min

During Bitcoin Design Week at Presidio Bitcoin, product designer and HRF grantee Erik Cativo joined the show to talk about designing the future of money. We get into his experiments with ecash and bitchat, the magic of b...

21 in 21: Kyle Fletcher

October 02, 2025 7:09am 23 min

Haley Berkoe is joined by Kyle Fletcher, Principal Design Director at Block, to explore the intersection of bitcoin, design, and culture. They discuss why artists and designers play a critical role in shaping bitcoin’s f...

21 in 21: Christoph Ono

September 24, 2025 6:00am 24 min

In this episode of 21 in 21, Haley is joined by Christoph Ono, co-founder of the Bitcoin Design Foundation and longtime contributor to the Bitcoin Design Community. They talk about Bitcoin Design Week in San Francisco, t...

21 in 21: Conor Okus

September 05, 2025 6:00am 24 min

In this episode, Haley Berkoe interviews Conor Okus, a Product Manager at Spiral. Conor shares his journey from playing football to becoming a grantee at Spiral and now managing the grant program. He addresses common mis...

21 in 21: Mogashni Naidoo

August 28, 2025 6:00am 25 min

Haley Berkoe sits down with Mogashni “Mo” Naidoo — UX researcher, designer, and co-founder of the Bitcoin Design Foundation. Mo shares her path into bitcoin design, why developers and designers need each other, and how t...

21 in 21: Matthew Pines

August 19, 2025 6:00am 26 min

Haley Berkoe talks with Matthew Pines, Executive Director of the Bitcoin Policy Institute, about bitcoin’s growing role in U.S. policy. They cover building a bitcoin community in DC, how policymakers are treating bitcoin...

21 in 21: Tadge Dryja

August 12, 2025 7:00am 23 min

Haley Berkoe met with Tadge Dryja, a bitcoin developer, researcher, and co-creator of the Lightning Network. They discussed the importance of preparing for potential threats from quantum computing and Tadge’s proposed so...

21 in 21: Jameson Lopp

August 07, 2025 12:40pm 22 min

In this episode, Haley Berkoe chats with Jameson Lopp, longtime bitcoiner, cypherpunk, and Chief Security Officer at Casa, to explore the long-term threats and opportunities facing bitcoin. He discusses his latest bitcoi...

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