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Blockchains are secure by design and exemplify a distributed computing system with high Byzantine fault tolerance¡£ Decentralized consensus has therefore been achieved with a blockchain¡£ This makes blockchains potentially suitable for the recording of events£¬ medical records£¬ and other records managementactivities£¬ such as identity management£¬ transaction processing£¬ documenting provenance£¬ food traceability or voting¡£ 

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