Bitcoin (BTC), launched in 2008 by the pseudonymous Satoshi Nakamoto, is the world's first decentralized cryptocurrency. It operates on a peer-to-peer network using blockchain technology—a distributed ledger that records all transactions transparently and securely without intermediaries like banks.

With a fixed supply cap of 21 million coins, Bitcoin is designed as "digital gold," offering scarcity and resistance to inflation. Transactions are verified by miners through proof-of-work, securing the network while rewarding participants with new BTC.

As of early 2026, Bitcoin trades around $89,000–$90,000, boasting a market cap exceeding $1.7 trillion. It remains the leading crypto asset, driving innovation in finance, store-of-value narratives, and global adoption despite volatility.