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?лок?ейн ?оби?? благод?йн???? б?л?? п?озо?о?, е?ек?ивно? ? в?д??еж?вано?Blockchains are unique in that, after a transaction has actually been recorded and confirmed, it could?�t be improved. The ledger only allows for a person-way info modification." A copyright spokesperson said the "process of maintaining