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Историческую версию Btcoin можно получить на Android
Биткойн - это криптовалюта, форма электронных денег.
Bitcoin is a cryptocurrency, a form of electronic cash. It is a decentralized digital currency without a central bank or single administrator that can be sent from user-to-user on the peer-to-peer bitcoin network without the need for intermediaries.The bitcoin blockchain is a public ledger that records bitcoin transactions.