Bitcoin ($BTC ) is the first and most well-known cryptocurrency, created in 2009 by the anonymous Satoshi Nakamoto. It allows users to send and receive digital money without banks, using a decentralized system called blockchain.

With a fixed supply of 21 million coins, $BTC is often seen as "digital gold" and used for in

vestment, online payments, and global transfers. Despite challenges like volatility and regulation, it remains a key player in the future of finance