Bitcoin; is a digital currency issued as an open source code in the crypto (money) category. Bitcoin represents a currency feature that we can spend in our everyday shopping and online environments, such as the currency we use today, such as TL, Dollar, Euro. The distinguishing feature of Bitcoin from other currencies is that monetary authorities and governments have no control over Bitcoin. Because Bitcoin is produced not under the control of the governments but under the control of the Bitcoin network. In 2009, Bitcoin was released as a "protocol" by a nickname of Satoshi Nakamoto. According to this protocol; Bitcoins are an independent currency, which is based on peer-to-peer networks between individuals and can not be controlled by a central authority, whose transaction fee is rather low. Since February 2015, more than 100,000 merchants and sellers have accepted bitcoin as a payment. According to the research conducted by Cambridge University in 2017, 2.95 to 5.8 million ...