Open Bitcoin Academy

Built different

Everything compiles into a single binary. No servers, no tracking, no subscriptions. Your device, your pace.

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Fully Offline

All content, fonts, and exercises are embedded. Works without internet on every platform.

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Real Cryptography

Hash data, derive keys, build transactions, and debug Script. Not simulated — actual Bitcoin primitives.

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6 Languages

English, German, Spanish, French, Portuguese, and Swahili. More coming.

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Protocol Diagrams

28+ interactive visualizations of Bitcoin protocol concepts. See how blocks, transactions, and scripts work.

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Quizzes & Progress

Test your knowledge after each lesson. Progress is saved locally on your device.

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Public Domain

Unlicensed. No restrictions. Fork it, translate it, teach with it.

From basics to the bleeding edge

13 chapters aligned with Mastering Bitcoin 3rd Edition, plus 6 advanced topics you won't find in any textbook.

Cryptographic Primitives Keys & Addresses Wallets & BIP32 Transactions Bitcoin Script P2PKH / P2WPKH / P2TR Network & Propagation Blockchain Structure Mining & Consensus Security Taproot Miniscript PSBTs FROST / ChillDKG Lightning Network RGB / Fedimint / Cashu / Ark

Try it now

The full app running in your browser via WebAssembly. Nothing to install.