SUPPLY CHAIN MANAGEMENT METHOD, COMPUTER PROGRAM PRODUCT FOR DISPLAYING TRADING RECORD, SUPPLY CHAIN MANAGEMENT SYSTEM, AND COMPUTER PROGRAM PRODUCT FOR MANAGING TRADING RECORD

摘要

A supply chain management method for managing, using a blockchain, a trading record between traders that form a supply chain includes acquiring (i) first item data recorded on a first storage medium that is physically attached to an incoming item delivered to a first trader of traders and (ii) a node identification data assigned to the first trader. The supply chain management method includes calculating, as second item data, a hash value based on the first item data and the node identification data. The supply chain management method includes physically attaching, to an outgoing item, a second storage medium on which at least the second item data is recorded. The supply chain management method includes delivering the outgoing item to a second trader of the traders along with the attached second storage medium such that the second item data is transferred to the second trader.