Since the NFC tag is assigned a unique ID, the risk of it being switched is extremely low. The unique ID of the NFC tag is also recorded in the SRR in the blockchain, so the risk of the connection between the NFC tag and the SRR being tampered with is extremely low.
The physical information of the work connected to the NFC tag can also be stored, so that in the event of a substitution, the NFC tag can be checked against the information in the SRR to prevent the NFC tag from being attached to a forgery.
Furthermore, the URL of the Viewer, which can be opened by reading the NFC tag, is not changed because the NFC tag is read-only.
We plan to continue adding functions to improve tamper-resistance in the future.