τι ειναι το bitcoin και πως λειτουργει

https://front-wiki.win/index.php?title=The_Pros_and_Cons_of_ΤΙ_ΕΙΝΑΙ_ΤΟ_BITCOIN

Bitcoin is an electronic currency which runs free of any type of main control or the oversight of financial institutions or federal governments. Rather it relies on peer-to-peer software application and also cryptography.