The dearth of a central authority may also make cryptocurrencies safer. "It truly is hack-proof for the reason that there's no a single central point of failure," points out David Donovan, executive vp at Publicis Sapient.?? ??????? ???????, ? ?????????? ????? ????: ??????? ???? ? ???? ?????? ??? ??????? ???? ? ???? ????????? – ?? ????, ????, ???