τι ειναι το bitcoin και πως λειτουργει
https://wiki.lamers.com.ua/index.php?title=How_Successful_People_Make_the_Most_of_Their_τι_ειναι_το_bitcoin_και_πως_λειτουργει_88993
Bitcoin is a digital money which runs devoid of any type of main control or the oversight of financial institutions or federal governments. Instead it depends on peer-to-peer software application and cryptography.