$BTC Bitcoin (BTC) is a decentralized digital currency created in 2009 by an unknown person or group using the pseudonym Satoshi Nakamoto. It operates on a peer-to-peer network without the need for intermediaries like banks. Transactions are verified by network nodes through cryptography and recorded on a public ledger called the blockchain. Bitcoin has a fixed supply of 21 million coins, making it deflationary by design. It is often seen as a hedge against inflation and a store of value, similar to digital gold. Despite price volatility, it remains the most widely recognized and adopted cryptocurrency in the world.