公开(公告)号：US20220309514A1

公开(公告)日：2022-09-29

申请号：US17704100

申请日：2022-03-25

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hyun Jin LEE ,  Dae Geun YOON ,  Ki Sung PARK

IPC: G06Q30/00 ,  H04L9/08 ,  G06Q20/38

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.