$BTC Bitcoin (BTC) is the first and most well-known cryptocurrency, created in 2009 by an anonymous person or group using the pseudonym Satoshi Nakamoto. It operates on a decentralized blockchain network, meaning no central authority, such as a government or bank, controls it. Transactions are recorded on a public ledger called the blockchain, ensuring transparency and security. Bitcoin is often referred to as digital gold because of its limited supply of 21 million coins. It is widely used for peer-to-peer transactions, investments, and as a hedge against inflation. Over the years, Bitcoin has gained popularity and influenced the entire cryptocurrency market.