SERVER, DATA PROCESSING METHOD, COMPUTER SYSTEM, AND COMPUTER

This server having an interface connected to a first computer comprises: a coordination unit that receives a processing request, determines whether a coordination request showing a process for a first blockchain to which the first computer belongs and a process for a second blockchain to which a second computer coordinated to the first computer belongs is included in the processing request, and, if the coordination request is included, determines whether redaction of the coordination request is necessary; and a redaction unit that carries out redaction of the coordination request for which redaction is necessary on the basis of the results of the determination, wherein the coordination unit transmits, to the first computer, a processing execution request that includes the coordination request on which redaction has been carried out by the redaction unit in accordance with the results of the determination.