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But how does bitcoin actually work?

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Further reading 1

What does a module promise its callers? →Try replacing a module whose callers rely on its incidental return order. Start with what the interface says, then trace the decisions it hides and the behaviors people have learned to expect.This video helps answer · Does a valid signature settle which history to keep?

Caption notes

Signatures address authorization of individual payments. They do not by themselves resolve competing histories; Bitcoin adds linked blocks and cumulative proof of work as a selection rule.

Video or transcript source ↗
Original passages · 2
each one of those lines on the ledger requires a completely new signature
But how does bitcoin actually work? · ▶ 7:07–7:15
the one with the most work put into it
But how does bitcoin actually work? · ▶ 19:10–19:22

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