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??дк?ий?е дл? ?ебе новий ??вен? ?андом? й ?озблок?й?е необмежен? можливо??? дл? ?ана??вBlockchains are exclusive in that, as soon as a transaction is recorded and confirmed, it could?�t be changed. The ledger only permits a person-way info modification.All network transaction costs, or fuel fe