Bitcoin is the world's leading cryptocurrency based on a decentrally organized booking system. Payments are legitimized cryptographically and processed via a network of computers with equal rights (peer-to-peer). Unlike the traditional banking system, no central clearing of money movements is necessary. Proofs of ownership of Bitcoin are stored in personal digital wallets. The exchange rate of a Bitcoin to legal tender follows the principle of pricing on the stock exchange. The Bitcoin payment system was invented by Satoshi Nakamoto, appearing under a pseudonym, according to Nakamoto in 2007, who described it in a publication in November 2008 and released open-source reference software for it in January