The Whitepaper

Satoshi Nakamoto's 2008 whitepaper introduced Bitcoin as a peer-to-peer electronic cash system. Its core problem was not how to move data online, but how to stop the same digital coin from being spent twice.

Traditional payment systems solve that with a central ledger. Bitcoin instead combines transaction ordering, proof-of-work, and majority consensus into a public chain that anyone can inspect.

This design shifts trust from an institution to open verification plus economic cost. Anyone can check the rules, but attacking history becomes expensive because the attacker must outwork the honest chain.

The whitepaper is short, but it frames most of Bitcoin's later debates: scaling, mining concentration, and finality all come back to how this shared ordering system behaves under real-world pressure.