A SECRET WEAPON FOR COPYRIGHT

A blockchain is a distributed public ledger ??or on line digital databases ??that contains a file of all of the transactions on a platform.?�러???�유�? 로그?? ?�출 ?�세??관�??�는 ?�티 ?�싱 ?�구???�???�중 ?�는 ?�중 ?�소 ?�증???�함?�여 교환???�는 ??지�??�공?��? ?�공?�는 모든