Librería de Satoshi

A library
to learn
and build
Bitcoin
and Lightning.

We train developers, educators and community leaders through rigorous programs, residencies and grants that end in real contributions.

Support the mission Explore Courses →

Programs & paths

Different paths,
one mission.

01
Courses General Learning

Bitcoin from scratch. Fundamentals, wallets, Lightning and more.

→ 02
Developers B4OS

Contribute to Bitcoin Core and Lightning Network. 5–8 months of intensive training with active mentors.

→ 03
Community Ambassador

Learn and teach Bitcoin through a technical and community-focused pan-African multilingual network.

→

Community impact

316+ Graduates 2025
40+ Countries 2025
680+ Active community 2025
50+ Full-time grants 2021–2025
250+ Micro-grants 2025
800+ Scholarships awarded 2025

Featured

Featured courses and programs

General

Diplomado de Privacidad en Bitcoin

La mayoría de los usuarios de Bitcoin desconocen que cada transacción deja un rastro permanente y analizable en la blockchain. Síntesis del curso: Un curso técnico sobre privacidad en Bitcoin, enfocado en las implicancias del modelo UTXO y las técnicas existentes (CoinJoin, PayJoin, Silent Payments, entre otras), para proteger la identidad y los patrones de gasto de los usuarios en una blockchain pública y permanente. Dictado por Lucas Ontivero, líder de desarrollo de Wasabi Wallet y coautor del protocolo WabiSabi. Objetivo principal: existe una brecha entre quienes usan Bitcoin y quienes realmente entienden cómo proteger su privacidad dentro del sistema. A diferencia de cursos teóricos genéricos, este programa está dictado desde la experiencia real de construir software de privacidad en producción. El enfoque no es solo conceptual sino basado en decisiones de diseño reales, trade-offs técnicos y problemas que solo surgen al implementar estas soluciones en el mundo real.

Bitcoin Dev TBD
General

Observando la red P2P de Bitcoin

Observing the Bitcoin P2P Network: Building a Node from Scratch

Bitcoin Dev TBD
General

Expertos del Protocolo

Este curso se enfoca en comprender a fondo el funcionamiento interno de Bitcoin, combinando la lectura y discusión del libro "Mastering Bitcoin" con material complementario. Exploraremos cómo funciona Bitcoin internamente: claves privadas/públicas, transacciones y minería; el papel de la descentralización y los mecanismos de consenso; el scripting y la programabilidad de Bitcoin; y seguridad, privacidad y posibles vectores de ataque.

Bitcoin Master TBD
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About

Technical Bitcoin education in Spanish since 2022

We train the Spanish-speaking community to learn, contribute and teach Bitcoin. Learn where we come from and where we are headed.

Read our story → Talk to us →

Testimonials

What our graduates say

B4OS

"B4OS gave me structure, mentorship and time to become an active Bitcoin Core contributor. I have four merged PRs and work full time in the ecosystem today—it would not have happened without the program."

AG

Ana García

Bitcoin Core Contributor — B4OS Cohort 3 Alumni

Ambassador

"Thanks to the Ambassador program I organized my city’s first Bitcoin meetup. Today we have an active community of 200 people and several are studying in B4OS. The multiplier effect is real."

CM

Carlos Mendoza

Bitcoin Ambassador in Peru — Ambassador Alumni

LN & AI

"The LN & AI program exposed me to technologies I could not find anywhere else. I built my first autonomous payment agent in week three and now work at an agentic payments startup in Miami."

MT

María Torres

LN & AI Developer — LN & AI Program Alumni

Free technical Bitcoin education for the Global South, and beyond. In your own language.

1,189 learners and 316 verified graduates in 40 countries are already building the future of Bitcoin. Your next step starts here.

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