??????????? ??? ????? ???????, ??? ????? ?????? ??? ???????? ??. ???? ???????? ??? ?? ?????? ?? ???? ???? ?? ????????? ??? ?? ???? ???? ?? ?????????.It is actually "an open, dispersed ledger which will document transactions amongst two functions proficiently and in a verifiable and everlasting way".[63] To be used being a distributed ledger, a bl