Event sequencing method of proof

摘要

Proving device 1, event ordering system 100, and audit device 3, perform an audit of the event order acceptance certificate (i = a, b, ..., n), proving device 1 has been issued user device 2i of multiple, equipped with a computer network 4 for interconnecting each of the devices or more, proving device 1 is in response to the event order certification request from the user device 2i, issue the event order acceptance certificate, Reply to the user device 2i If you as well, doubt arises in the event the order acceptance certificate, the user device 2i verifies the event order acceptance certificate by the audit results of the audit unit or 3 data published proof device 1.