τι ειναι το bitcoin και πως λειτουργει

https://post-wiki.win/index.php?title=20_Questions_You_Should_Always_Ask_About_Η_πορεια_του_bitcoin_Before_Buying_It

Bitcoin is a digital currency which runs devoid of any kind of main control or the oversight of banks or federal governments. Rather it relies on peer-to-peer software application as well as cryptography.