US Patent 11388009 Token management system and token management method

A token management system includes a generation unit that generates a non-fungible token associated with a product identifier in a distributed ledger, a management unit that associates the non-fungible token with a first public key, and a second public key for licensing processing in the distributed ledge, and a transfer unit that performs transaction processing of changing the first public key associated with the non-fungible token on the basis of a first private key is realized.