Bitcoin is an electronic money created in 2009 by Satoshi Nakamoto. The name is also associated with open source software that he designed, and also uses a peer-to-peer without a centralized storage or sole administrator in which the US Treasury Department calls bitcoin a decentralized currency. Unlike currency in general, does not depend on trust bitcoin major publisher. Bitcoin uses a distributed database and spread to the nodes of a P2P network to journal transactions, and uses cryptography to provide security functions of the base, such as ensuring that bitcoin-bitcoin only be spent by people have it, and should never be done more than one occasion.

Design of Bitcoin allows for ownership without identity (anonymous) and transfer of wealth. Bitcoin - bitcoin can be stored on a personal computer in a file format wallet or stored by a third party wallet service, and despite all that Bitcoin - bitcoin can be sent via the Internet to anyone who has a Bitcoin address. Topology peer-to-peer bitcoin and the lack of a single administration makes it impossible for the authority, any government, to manipulate the value of a bitcoin - bitcoin or cause inflation by producing more bitcoin.

Bitcoin is one of the first implementation of the so-called cryptocurrency, first described by Wei Dai in 1998 in cypherpunks mailing list.