$BTC Bitcoin (BTC) is a decentralized digital currency, introduced in 2009 by an anonymous entity using the pseudonym Satoshi Nakamoto. It operates on a peer-to-peer network using blockchain technology, a secure and transparent ledger that records all transactions. Unlike traditional currencies, Bitcoin is not controlled by any government or central authority. It is created through a process called mining, where powerful computers solve complex algorithms. Bitcoin's limited supply of 21 million coins makes it resistant to inflation. It is widely used for online transactions, investments, and as a store of value. Despite its volatility, Bitcoin has revolutionized finance and cryptocurrency.