A blockchain is a dispersed community ledger ??or online electronic databases ??which contains a file of the many transactions with a platform.???? ??????? ?????????? ?????? - ??? ???? ??????? ???????? ??? ??????? ??? ?????? ?????? ????????? ??? ??? ????????? ???? ??? ??????????? ???????????, ??? ?????????? ?????? ?????????? ????? ????? ?????? ??? … Read More