$BTC Bitcoin (BTC) is a decentralized digital currency that operates without a central authority, enabling peer-to-peer transactions over the blockchain network. It was introduced in 2009 by an anonymous person or group using the pseudonym Satoshi Nakamoto. Bitcoin uses cryptographic techniques to secure transactions and limit the creation of new units. Its fixed supply of 21 million coins makes it deflationary, attracting investors as a store of value similar to digital gold. Bitcoin is mined through a proof-of-work process and stored in digital wallets. Despite volatility, it remains the most recognized and widely adopted cryptocurrency globally, influencing the broader crypto market.