Τα παντα για το bitcoin
https://wiki-coast.win/index.php?title=ΤΙ_ΕΙΝΑΙ_ΤΟ_BITCOIN:_What_No_One_Is_Talking_About
Bitcoin is a digital money which operates free of any kind of central control or the oversight of financial institutions or governments. Instead it depends on peer-to-peer software program and cryptography.