$BTC Bitcoin is a decentralized digital currency created in 2009 by an unknown person or group using the pseudonym Satoshi Nakamoto. It operates on a technology called blockchain, which is a distributed ledger that records all transactions across a network of computers. Bitcoin allows for peer-to-peer transactions without the need for intermediaries like banks, providing users with more control over their finances. The total supply of Bitcoin is capped at 21 million coins, which creates scarcity and can drive value. Bitcoin is often viewed as a store of value or an investment, but it can also be used for everyday transactions.