$BTC Bitcoin ($BTC) is the first and largest cryptocurrency in the world by market capitalization. Since its inception in 2009, Bitcoin has undergone many phases of strong volatility but has maintained its leading position in the cryptocurrency ecosystem. With a limited supply of 21 million coins, Bitcoin is viewed as a scarce asset and the 'digital gold' of the new era. Investors can buy, sell, or hold Bitcoin as a means of protecting their assets against inflation. Despite significant market fluctuations, Bitcoin remains a popular choice for many investors around the world.