$BTC Bitcoin (BTC) is the pioneering cryptocurrency and the most valuable by market capitalization. It is often referred to as "digital gold" due to its limited supply and its role as a store of value. Its underlying technology, the blockchain, revolutionized the way digital transactions are conducted by offering a decentralized and transparent system. The trading pair BTC/USD is one of the most liquid and widely followed globally, reflecting the value of Bitcoin in US dollars. The volatility of this pair attracts traders and speculators, while its long-term trend is closely monitored by institutional and retail investors around the world.