Bitcoin (BTC) is a decentralized digital currency, introduced in 2009 by an anonymous entity known as Satoshi Nakamoto. It operates without a central authority, using blockchain technology to record transactions on a public ledger. Bitcoin is created through a process called mining, where powerful computers solve complex mathematical problems. It has a fixed supply of 21 million coins, which makes it deflationary. Bitcoin is praised for its transparency, security, and potential to serve as a hedge against inflation. It’s widely used for investment, online purchases, and cross-border transfers. Despite its benefits, Bitcoin faces challenges such as price volatility, scalability issues, and regulatory scrutiny. Over the years, it has grown from a niche concept to a globally recognized financial asset, often referred to as "digital gold." Bitcoin continues to shape the future of finance, sparking innovation in decentralized technologies and inspiring the broader cryptocurrency movement.