$XRP 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 is a decentralized digital currency that operates on a peer-to-peer network without the need for a central authority like a bank. Bitcoin transactions are verified by network nodes through cryptography and recorded on a public ledger called the blockchain. It is limited to 21 million coins, making it deflationary in nature. Bitcoin is used for various purposes including investment, online purchases, and as a store of value. Its price is highly volatile and influenced by demand, regulations, investor sentiment, and market news.