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Bitcoin is a digital currency that makes use of blockchain technology to store and record all transactions. First proposed in a white paper published online in 2008 by a mysterious person (or group of people) called Satoshi Nakamoto. The unique features of bitcoin compared to fiat currencies like dollars or pounds are that there is no central authority or bank. Each member of the network has equal power. This decentralised network is completely transparent and all transactions can be read on the blockchain. At the same time it offers privacy in terms of who owns the cryptocurrency.