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?ок?а??й?е ?во? знанн? й о??им?й?е о??анн? ?н?о?ма???Blockchains are one of a kind in that, at the time a transaction has actually been recorded and verified, it can?�t be improved. The ledger only permits a single-way information modification.?лок?ейн ?оби?? благод?йн???? б?л?? п?озо?о?, е?ек?