Abstract: A system is provided robustly protects important information from high-level cyberattacks and physical destruction, including cryptographic analysis using quantum computers and electromagnetic pulse attacks, while enabling restoration without theft by a third party. The system encrypts and partitions file data using predetermined encryption and division algorithms based on a customer specified parameter, allots each file data to multiple sets of distributed file management groups comprising node groups at multiple bases in different regions of the world, distributes and records the file data to be saved in the nodes located at each base that belong to corresponding distributed file management groups, generates and encrypts index information of each distributed and recorded corresponding file data, and records the index information in node groups of a specified base in the consortium chain.

Abstract: To provide a settlement processing system making use of digital assets that can assure, without using arbitrage function by HET, price linkage between a first order book and a second order book and trading liquidity between the order books.