Data provision method in a data utilization system

A data provision method in a data utilization system that is connected to a network and has:

• a plurality of data management servers including a first data management server for a first user and a second data management server for a second user;
• and a data processing server,
• wherein each of the data management servers maintains a distributed shared ledger;
• wherein the first data management server executes a data registration program to save first data in storage, generates a first transaction indicating the first data having been saved, and adds the verified first transaction as a record in a metadata management table as one of the distributed shared ledgers;
• wherein the second data management server transmits an analysis request for processing the first data to the first data management server;
• wherein the first data management server receives the analysis request, executes an analysis program, transfers the analysis request to the data processing server, allowing second data resulting from processing the first data to be saved in storage, receives notification of having processed the first data from the data processing server, generates a second transaction indicating the first data having been processed according to the analysis request, and adds the verified second transaction as a record in a processing/usage trail management table as one of the distributed shared ledgers.