Bitcoin is a consensual network that allows a new payment system and a completely digital currency. It is the first network among decentralized payment pairs driven by its users without a central authority or intermediaries. From a user's point of view, Bitcoin is like money for the Internet. Bitcoin may be the only existing triple accounting system.
Bitcoin is the first implementation of a concept known as "cryptographic currency", which was first described in 1998 by Wei Dai on the e-mail list "cypherpunks", where he proposed the idea of a new type of money that used the Cryptography to control their creation and transactions, rather than centralized authority.
From the user 's perspective, Bitcoin is no more than a mobile or desktop application that provides a personal Bitcoin purse and allows the user to send and receive bitcoins with it. This is how Bitcoin works for most users.