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The lack of a central authority may make cryptocurrencies safer. "It is really hack-proof for the reason that there isn't any 1 central position of failure," describes David Donovan, govt vice chairman at Publicis Sapient.Εάν μπορεί ο οποιοσδήποτε να δημιουργήσει ένα μπλοκ, τι τον εμποδίζει