Patent ID: 11868322
Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 1:
2. A content use system comprising:
a file management system,
a distributed ledger system including a distributed ledger,
a right holder terminal used by a right holder of a content piece, and
a user terminal used by a user of the content piece,
wherein the right holder terminal comprises:
a storage device configured to store file management control data in which a network identifier that identifies the file management system is associated with an identifier of a contract that is held in the distributed ledger system and corresponds to the network identifier;
a registration unit configured to issue a right holder registration transaction for registering the network identifier of the file management system in which a content piece is to be registered, an identifier of the content piece in the file management system, and connection information of the right holder terminal in the file management system, in the contract that corresponds to the network identifier; and
a file management control unit configured to give a notification that the right holder terminal has the content piece via the file management system, and

wherein the user terminal comprises:
a storage device configured to store the file management control data; and
a file management control unit configured to hold routing data that is to be held by the user terminal in response to being notified that the right holder terminal has the content piece via the file management system.