$BTC Bitcoin (BTC) is the world’s first and most well-known cryptocurrency, launched in 2009 by the mysterious Satoshi Nakamoto. Built on blockchain technology, Bitcoin offers a decentralized, transparent, and secure way to transfer value without relying on banks. With a limited supply of 21 million coins, BTC is often called “digital gold” and is used as both a store of value and a means of payment. As adoption grows worldwide, Bitcoin continues to drive innovation in finance, inspire other cryptocurrencies, and challenge traditional systems. Whether you're investing, trading, or just curious, BTC remains a cornerstone of the crypto revolution.