The dearth of a central authority could also make cryptocurrencies more secure. "It is hack-proof for the reason that there is not any one central level of failure," describes David Donovan, executive vice president at Publicis Sapient.Ενώ ξεκίνησε με σκοπό να εξυπηρετήσει ως ένα νέο μέσο ανταλλαγ