Τα παντα για το bitcoin
http://dimovaa.com/index.php/How_Successful_People_Make_the_Most_of_Their_τι_ειναι_το_bitcoin_και_πως_λειτουργει
Bitcoin is a digital money which runs without any type of central control or the oversight of financial institutions or governments. Instead it relies on peer-to-peer software program and also cryptography.