Bitcoin is the first decentralized peer-to-peer payment network that is powered by its users with no central authority or middlemen. From a user perspective, Bitcoin is perhaps best described as cash for the Internet, but Bitcoin can also be seen as the most prominent triple entry bookkeeping system in existence.It is also known as digital cash, cryptocurrency, an international payment network, the internet of money but whatever you call it, Bitcoin is a revolution that is changing the way everyone sees and uses money.