Bitcoin is a decentralized cryptocurrency, created in 2009 by an unknown person known as Satoshi Nakamoto. Bitcoin is considered the first widely used cryptocurrency, characterized by its secure blockchain technology. Bitcoin is used for online financial transactions without the need for intermediaries, such as banks. Bitcoin has a volatile value, but it has become a popular investment. Bitcoin is mined using powerful computers to solve complex mathematical equations. Bitcoin has revolutionized the world of finance and information technology.