Cold-chain delivery and retrieval system on basis of blockchain

A delivery and retrieval system based on a blockchain, characterized in that a cycle of item delivery and container retrieval is carried out based on a blockchain, the system comprising:

• a supplier terminal operated by a supplier who supplies items;
• a customer terminal used by a customer to order the items supplied by the supplier;
• a single server or a plurality of servers connected via a blockchain;
• an item storage device which stores the items prior to being received by the customer, and is provided with a plurality of unit storage boxes previously allocated to each of a plurality of suppliers, and a cooling unit for keeping the plurality of unit storage boxes in a refrigerated or frozen state, wherein each of the plurality of unit storage boxes varies a loading space thereof according to the size of an item being stored therein;
• a container return device to which a container used for packaging or storing the item is returned, wherein the container performs the function of managing the temperature of items;
• and
• a container retrieval device which washes and manages the container retrieved from the container return device,
• wherein the server is configured to,
• when a message indicating that an item sent by a supplier has arrived at the item storage device is received from the item storage device, record data relating to arrival information for the arrived item on a blockchain;
• when a message indicating that the item stored in the item storage device has been received by a customer or a deliverer is received from the item storage device, record data relating to receipt information for the received item on the blockchain;
• when a message indicating that a container has been returned is received from the container return device, record data relating to return information for the returned container on the blockchain;
• when a message indicating that the container has been retrieved is received from the container retrieval device, record data relating to retrieval information for the retrieved container on the blockchain;
• and
• when a message indicating that the container has been forwarded to the supplier or a third party is received from the container retrieval device, record data relating to forwarding information for the forwarded container on the blockchain.