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LEVEL 2
Going Deeper
20 lessons • ~1 month • Requires Level 1
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Module 2.1: Keys & Cryptography
⏱ 15 MINS • +80 XP
How public and private keys protect your bitcoin using unbreakable mathematics.
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Module 2.2: The Bitcoin Network
⏱ 15 MINS • +80 XP
Thousands of computers worldwide keeping Bitcoin alive. No CEO. No headquarters.
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Module 2.3: Lightning Network
🔒 COMPLETE MODULE 2.2
Send tiny amounts of bitcoin instantly for almost zero fees.
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Module 2.4: Banks vs Bitcoin
🔒 COMPLETE MODULE 2.3
Why billions of people live without bank access — and how Bitcoin changes that.