Bitcoin implements a global, distributed ledger that solves the Byzantine Generals Problem, letting users transfer digital assets peer-to-peer without intermediaries or high fees. It secures transactions as a digital bearer instrument, cuts fraud, and lays the groundwork for digital contracts, ownership, and cross-border payments.

• Bitcoin's core innovation is solving the Byzantine Generals Problem, enabling a tamper-proof distributed ledger that lets strangers transfer unique digital assets without banks or intermediaries.
• Transaction fees run fractions of a penny versus the 2-3%+ charged by credit cards and wire transfers.
• Speculative price rises are actually functional, since they incentivize the infrastructure buildout needed to make Bitcoin usable as a real payment network.
• Merchants can accept Bitcoin and instantly convert to local currency, sidestepping volatility while still benefiting from low fees.