| CPC G06Q 10/087 (2013.01) | 2 Claims |
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1. An information management system that manages information on a chemical substance contained in a product distributed in a supply chain with a distributed ledger technology, the information management system comprising:
a plurality of apparatuses belonging to a plurality of companies included in the supply chain, respectively; and
a network over which the plurality of apparatuses are connected to one another, wherein
each of the plurality of apparatuses includes:
a storage in which a distributed ledger is stored, the distributed ledger including a list that shows a chemical substance managed in the information management system, and
an input device that accepts input information from a user, the input information including first information and second information, the first information showing a new chemical substance proposed to be managed in the information management system, the second information showing whether the new chemical substance falls under a restricted substance that refers to a chemical substance designated under laws and regulations,
each of the plurality of apparatuses discloses to an apparatus of a downstream company in the supply chain, information on a chemical substance contained in a product supplied to the downstream company and included in the list, the apparatus being included in the plurality of apparatuses, and
each of the plurality of apparatuses is configured to together perform a process including:
transmitting, from a transmitting apparatus of the plurality of apparatuses to one or more different apparatuses of the plurality of apparatuses, first transaction data, when the input device of the transmitting apparatus has accepted the input information, the first transaction data including the second information of the input information, and indicating a request for addition of the new chemical substance to the list;
when the one or more of the plurality of apparatuses receive the first transaction data from the transmitting apparatus, each of the one or more different apparatuses verifies the first transaction data based on third information obtained from an external apparatus that manages information on the laws and regulations and publishes the restricted substance on the Internet, verifying the first transaction data including checking correctness of the second information included in the first transaction data, in accordance with the third information; and
transmitting, by one of the one or more different apparatuses when the second information is determined to be incorrect by the one of the one or more different apparatuses as a result of the checking, second transaction data denying the request for addition received from the transmitting apparatus to the each of the plurality of apparatuses,
each of the plurality of apparatuses further includes a display, and
the transmitting apparatus:
has information indicating denial of the request for addition shown on the display of the transmitting apparatus when the transmitting apparatus receives the second transaction data from the one or more different apparatuses, and
transmits the first transaction data again to the one or more different apparatuses when the input information accepted by the input device of the transmitting apparatus is corrected after the display of the transmitting apparatus shows the information indicating the denial.
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