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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 2009. The Bitcoin network is based on a decentralized database shared by participants, the blockchain, in which all transactions are recorded. Cryptographic techniques are used to ensure that valid transactions with Bitcoins can only be made by the respective owner and that monetary units cannot be issued more than once.New Bitcoin units are created by solving cryptographic tasks called mining.This is the descriptive, concise short introduction to Bitcoin.

Prince Philip was born on the island of Corfu in Greece, on June 10, 1921. As members of Greek and Danish royalty, Philip and his family were banished from his native country when he was young, with the boy subsequently living in France, Germany and Britain.  Philip married Queen Elizabeth II before her ascension to the British throne in 1952. Their children include Prince Charles, heir apparent to the throne, Anne, Andrew and Edward. Philip served as the British royal consort for more than six decades. Queen Elizabeth II became queen on February 6, 1952, and was crowned on June 2, 1953. She is the mother of Prince Charles, heir to the throne, as well as the grandmother of Princes William and Harry.  As the longest-serving monarch in British history, she has tried to make her reign more modern and sensitive to a changing public while maintaining traditions associated with the crown. This is the descriptive, concise biography of Prince Philip & Queen Elizabeth II.

El Pr├¡ncipe Felipe naci├│ en la isla de Corf├║, en Grecia, el 10 de junio de 1921. Como miembros de la realeza griega y danesa, Felipe y su familia fueron desterrados de su pa├¡s natal cuando era joven, y el ni├▒o vivi├│ posteriormente en Francia, Alemania y Gran Breta├▒a.  Felipe se cas├│ con la reina Isabel II antes de su ascenso al trono brit├ínico en 1952. Sus hijos son el pr├¡ncipe Carlos, heredero del trono, Ana, Andr├⌐s y Eduardo. Felipe fue el consorte real brit├ínico durante m├ís de seis d├⌐cadas. Esta es la biograf├¡a descriptiva y concisa del Pr├¡ncipe Felipe.

2021-2022 edition.Blockchain is the technology that enables the existence of cryptocurrencies. Bitcoin is the name of the best-known cryptocurrency, the one for which blockchain technology was invented.A cryptocurrency is a medium of exchange, such as the US dollar, British Pound, or Euro, but is digital and uses encryption techniques to control the creation of monetary units and to verify the transfer of funds.This is the descriptive introduction to Cryptocurrencies and Blockchain technology. The 160 pages in this book explain the technology and various cryptocurrencies, including Bitcoin, Ethereum, Ripple, Tether, Polkadot, Cardano, Stellar, Litecoin, Bitcoin Cash, and Dogecoin.