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The shortage of a central authority could also make cryptocurrencies more secure. "It's hack-evidence due to the fact there is no a single central level of failure," explains David Donovan, executive vp at Publicis Sapient.Η κεφαλαιοποίηση ενός νομίσματος προκύπτει από τον πολλαπλασιασμό τ�