카테고리 ?�음 바이?�스 ?�용�??�벽 가?�드! 가?��???거래까�? 초보?��? ?�한 ?�세 ?�명copyright (or copyright for short) is often a kind of electronic cash ??in some cases called a electronic payment technique ??that isn?�t tied to some central financial institution, authorities, or business enterprise