BTC

https://wiki-cafe.win/index.php?title=8_Videos_About_τι_ειναι_το_bitcoin_και_πως_λειτουργει_That'll_Make_You_Cry_87516

Bitcoin is a digital currency which runs devoid of any type of main control or the oversight of financial institutions or governments. Rather it depends on peer-to-peer software application as well as cryptography.