??????????? ??? ????? ???????, ??? ????? ?????? ??? ???????? ??. ???? ???????? ??? ?? ?????? ?? ???? ???? ?? ????????? ??? ?? ???? ???? ?? ?????????.Cryptocurrencies use numerous timestamping schemes to "show" the validity of transactions additional to your blockchain ledger with no will need for your dependable 3rd party.: ??? ???????? ??? ?????