Τα παντα για το bitcoin
https://nova-wiki.win/index.php?title=9_Things_Your_Parents_Taught_You_About_ΤΙ_ΕΙΝΑΙ_ΤΟ_BITCOIN
Bitcoin is an electronic currency which operates free of any central control or the oversight of banks or governments. Instead it relies upon peer-to-peer software program as well as cryptography.