Jul 28, 202621 min
0xSero joins Haley Berkoe on 21 in 21 to discuss local AI, open models, and his soon-to-be-released platform for benchmarking open models and hardware ( local.ai ). He explains how his team benchmarks models and...
technology
21 in 21
Hosted by Hosted by Haley Berkoe · technology · EN
About this Podcast:
Haley Berkoe asks some of the biggest names in bitcoin and Silicon Valley 21 questions in 21 minutes, from the personalities you know and love to tech’s unsung heroes. A new episode drops when someone stops by Presidio Bitcoin. Reach out if you are or will be in the area and are interested in being on the show. presidiobitcoin.substack.com
Pitch Analysis
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Contact path
Public web form
Booking probability
30%
Guest openness
Selective
80/100
Required Score
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What is 21 in 21 about?
Haley Berkoe asks some of the biggest names in bitcoin and Silicon Valley 21 questions in 21 minutes, from the personalities you know and love to tech’s unsung heroes. A new episode drops when someone stops by Presidio Bitcoin. Reach out if you are or will be in the area and are interested in being on the show.
What has 21 in 21 covered recently?
Recent episodes include "21 in 21: 0xSero on Local AI, Open Models, and Benchmarking" (28 July 2026, 21 minutes), "21 in 21: Bradley Axen on Buzz, goose, and AI at Block" (24 July 2026, 25 minutes), and "21 in 21: Mic Neale on goose, Mesh LLM, and Open Source AI" (23 July 2026, 24 minutes).
How often does 21 in 21 publish?
21 in 21 publishes roughly every two weeks, with episodes averaging 24 minutes across 39 episodes.
How hard is it to get booked on 21 in 21?
Booking probability for 21 in 21 is 30%, and the host is rated Selective on guests. 21 in 21 requires a Pod Score of 80 or higher. 21 in 21's contact route on record: public web form.
Who should pitch 21 in 21?
The strongest fits for 21 in 21 are Investing & Wealth Management. 21 in 21 has a technology audience.
About the host
21 in 21 is a technology podcast with 39 episodes published.
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Recent episodes
Our AI reads these to draft pitches. Use them as grounding for a pitch that cites a real guest and a specific topic.
Jul 24, 202625 minHaley Berkoe sits down with Bradley Axen, who is leading many of Block's AI initiatives, including Buzz, a new open-source collaboration platform designed for humans and AI agents to work together. He also helped create...
Jul 23, 202624 minMic Neale, a member of the Spiral team at Block and a core developer of goose, an open source AI agent, joins Haley Berkoe on 21 in 21 to discuss goose, Mesh LLM, and open source AI. Mic shares how goose has evolved...
21 in 21
21 in 21: Patrick Ball on Using Bitcoin and AI to Defend Human Rights
Jul 2, 202623 minPatrick 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
21 in 21: Calle on Cashu, Clawi, and AI Agents
May 21, 202622 minOn 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...
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21 in 21
21 in 21: Linn Bieske on Hack-Nation and Building Global AI Communities
Apr 16, 202626 minLinn 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...
21 in 21
21 in 21: Rainey Reitman on Transaction Denied and Financial Censorship
Apr 7, 202626 minRainey 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...
21 in 21
21 in 21: Michael Saylor on Bitcoin, AI, and Advice for Builders
Mar 19, 202622 minMichael 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...
21 in 21
21 in 21: Andi Pitt on Bitcoin Venture, AI, and Cognitive Sovereignty
Mar 17, 202624 minAndi 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...
21 in 21
21 in 21: Mark Suman on Privacy-First AI
Jan 13, 202622 minMark 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...
21 in 21
21 in 21: David Gumberg on the Chaincode ₿OSS Challenge and Becoming a Bitcoin Core Contributor
Dec 17, 202523 minHaley 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...
21 in 21
21 in 21: Rod Roudi
Dec 11, 202524 minIn 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...
21 in 21
21 in 21: Joe Carlo on How Bitcoin Changed Pink Owl Coffee Forever
Oct 30, 202524 minHaley 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...
21 in 21
21 in 21: Kyle Olney
Oct 28, 202525 minKyle 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...
21 in 21
21 in 21: Nick Slaney
Oct 21, 202523 minIn 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...
21 in 21
21 in 21: Erik Cativo
Oct 15, 202526 minDuring 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...
21 in 21
21 in 21: Kyle Fletcher
Oct 2, 202524 minHaley 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...
21 in 21
21 in 21: Christoph Ono
Sep 24, 202525 minIn 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...
21 in 21
21 in 21: Conor Okus
Sep 5, 202525 minIn 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...
21 in 21
21 in 21: Mogashni Naidoo
Aug 28, 202525 minHaley 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...
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