Method of proving ownership and ownership transfer history using decentralized id

Abstract

Provided is a method of proving ownership and an ownership transfer history using a decentralized identifier (DID). The method includes identifying, by a verifier terminal, a product through a DID and identifying an initial producer of the product through the DID, generating, by the verifier terminal, a proof-of-ownership verifiable credential (VC) of the product, which includes metadata including information on the VC, security information (claims) including information on a belonging, and issuing organization electronic signature information (proof) including a digital signature method and a signature value for content certification of the VC, and providing, by the verifier terminal, the generated proof-of-ownership VC of the product to the producer of the product and storing a DID document of the produced product in a decentralized external storage in a decentralized manner.

Dependencies are inferred from the claim text.