τι ειναι το bitcoin και πως λειτουργει

https://foxtrot-wiki.win/index.php?title=The_Ultimate_Cheat_Sheet_on_Αρχικη_τιμη_bitcoin_43720

Bitcoin is a digital currency which operates free of any kind of main control or the oversight of financial institutions or governments. Instead it counts on peer-to-peer software program and cryptography.