$ETH Bitcoin (BTC) is a decentralized digital currency that enables instant payments to anyone, anywhere in the world. It operates without a central authority or banks, using a peer-to-peer network to facilitate transactions. Bitcoin's supply is capped at 21 million, and it uses blockchain technology to record transactions. BTC can be mined through complex mathematical calculations or purchased on cryptocurrency exchanges. Its value can fluctuate based on supply and demand, making it a popular investment option. Bitcoin's decentralized nature and limited supply have made it an attractive store of value and medium of exchange in the digital age. Transactions are secure.