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?лок?ейн ?оби?? благод?йн???? б?л?? п?озо?о?, е?ек?ивно? ? в?д??еж?вано?Blockchains are one of a kind in that, once a transaction is recorded and verified, it might?�t be adjusted. The ledger only permits one-way information modification.All community transaction costs, or gas charges, are compensated in ETH