BTC
https://echo-wiki.win/index.php?title=15_People_You_Oughta_Know_in_the_ΤΙ_ΕΙΝΑΙ_ΤΟ_BITCOIN_Industry_94005
Bitcoin is an electronic currency which runs devoid of any type of central control or the oversight of banks or governments. Instead it counts on peer-to-peer software program as well as cryptography.