Bitcoin is an electronic money made in 2009 by Satoshi Nakamoto. The name is also associated with the open source software that he designed, and also uses a peer-to-peer network without centralized storage or a single administrator where the US Treasury calls the bitcoins of a decentralized currency. Unlike most common currencies, bitcoin does not depend on trusting major publishers. Bitcoin uses a database that is distributed and spreads to the nodes of a P2P network to a transaction journal, and uses cryptography to provide basic security functions, such as ensuring that bitcoins can only be spent by people owning them, and never be done more from one time. 
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The bulk of the Transaction is verified and protected by a peer-to-pe-decentral network. [1] Introduced3 January 2009International UsersPrinting25BTC every ten minutes SourceTotal BTC in Circulation MethodThe new Bitcoin value will be reduced by half every four years until it reaches 21 million BTC [2]: 17Subsatuan .00000001satoshi [3] ] Symbols BTC, XBT, [4] , ฿ (same as symbols 