Data structure of administrator terminal, participant terminal, right holder terminal, user terminal, content usage system, administrator program, participant program, right holder program, user program and state data

摘要

PROBLEM TO BE SOLVED: To manage information of a plurality of file management systems with one contract of a distributed ledger. An administrator terminal 1 generates a contract in blockchain data B that corresponds to an identifier of a network that identifies a file management system 9 and associates an identifier in a blockchain system 6 of a participant terminal 10 to participate. The file management system generation unit 122 that issues a contract generation transaction that notifies the network identifier and the contract identifier to the user terminal 10 and the registration transaction that registers the connection information in the file management system 9 of the administrator terminal 1 in the contract. It is provided with a file management control unit 123 that issues, acquires connection information in the file management system 9 of the participant terminal 10 from the contract, and establishes a P2P connection with the participant terminal 10 based on the acquired connection information. [Selection diagram] Fig. 1