← All 21 daysDay 5 of 21 · Week 1 · Module 2.2

Mining & proof of work

“Mining is a lottery you enter with electricity — and that's exactly why it's secure.”

Miners bundle waiting transactions into a candidate block, then race to find a number that makes the block's hash meet a target — like rolling dice until you hit a specific rare combination. There is no shortcut; only trial and error at industrial speed. The winner earns new bitcoin plus fees; everyone else instantly verifies the win and the race restarts.

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Education only — not financial, investment, legal, or tax advice. Never share your seed phrase with anyone.