Bitcoin (symbol: BTC, XBT, BitcoinSign.svg) is a digital currency dispersed, released by Satoshi Nakamoto as open source software [9] since 2009 [7]. Bitcoins can be exchanged directly by the device without an Internet connection through an intermediary financial institution does [10].

Bitcoin has a different activity than the typical currency: Without a central bank to manage it and the system operates on a peer network protocols on the Internet [11]. Bitcoin is an automatic supply, limited, divided according to preset schedule based on algorithms. Bitcoin is granted to the computer "dig" Bitcoin to pay for the verification of Bitcoin transactions and recording them in the ledger is dispersed in peer - called blockchain. This ledger using Bitcoin as an accounting unit. Each Bitcoin can be broken down to 100 million smaller units called satoshi [3].Transaction fees apply for new transactions have not 'depending on the resources of the network. In addition to the transaction fee, the miner also được paid for the coded blocks (blocks) the transaction log. Just one block every 10 minutes a new one been created together with the amount allocated được Bitcoin. Bitcoin number per volume bị phụ thuộc levels on uptime of the network. Currently, in July 2016, allocated 12.5 per Bitcoin được new volume. Inflation would speed diminished one half Bitcoin 6.25 in July 2020 and further diminished after one half for each Cycle 4 years to a total of 21 million Bitcoins khi is released in 2140 [7] [12]. In addition to digging Bitcoin, Bitcoin users có by exchanged currency Bitcoin on sale, goods, or services.

Bitcoin currency is most typical encryption, born first, and most widely used in electronic commerce. [2] [13] The garment enterprises tend to pay with Bitcoin wants to shrink costs. To June 2016, the monetary base of Bitcoin được blank valuation of US $ 12 billion -. Is encryption currency markets have the greatest value [14] [15] The large fluctuations in the value of each Bitcoin be created những criticism of the economic relevance of Bitcoin as a currency. [16]

Note that the term is capitalized when Bitcoin mentioned as a protocol , software , or community and lowercase when referred to as a currency . Additionally , a more accurate term for Blockchain network is " classified medium " ( Decentralized ) , however, the term " dispersion " ( the distributed ) is used here to help readers more easily understood , and in fact dispersed 1 medium subclass distribution .