bitcoin για αρχάριους
https://wiki-quicky.win/index.php?title=The_Most_Common_Αρχικη_τιμη_bitcoin_Debate_Isn't_as_Black_and_White_as_You_Might_Think_44392
Bitcoin is an electronic money which operates free of any kind of main control or the oversight of banks or governments. Rather it counts on peer-to-peer software application and cryptography.