$BTC
Bitcoin (BTC) is a decentralized digital currency introduced in 2009 by an anonymous person or group known as Satoshi Nakamoto. It operates on a peer-to-peer network, allowing users to send and receive transactions without intermediaries like banks. Bitcoin transactions are recorded on a blockchain, a public, distributed ledger that ensures transparency and security. The total supply of Bitcoin is capped at 21 million coins, making it deflationary. Bitcoin has gained popularity as a store of value, and its price is volatile. It is often used for online purchases, investments, and as a hedge against inflation.