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Which one of the following describes a blockchain?
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blockchain, originally block chain, is a growing list of records, called blocks, that are linked using cryptography. ... The blockchain has been described as "an open, distributed ledger that can record transactions between two parties efficiently and in a verifiable and permanent way
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Blockchain is a system of recording information in a way that makes it difficult or impossible to change, hack, or cheat the system. A blockchain is essentially a digital ledger of transactions that is duplicated and distributed across the entire network of computer systems on the blockchain.
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a blockchain is a distributed digital ledger with data that is replicated and shared across a network
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