간단??말해?? 채굴 ?�비???�로??비트코인??채굴?�기 ?�해 ?�별??고안??고급 ?�업?�라�?�????�습?�다.copyright (or copyright for short) is usually a kind of electronic funds ??sometimes often called a electronic payment program ??that isn?�t tied to some central lender, authorities, or business enterprise.�