Trusted custody chain for verifiable claims
US12309286B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2023 |
| Grant date | May 20, 2025 |
| Priority date | — |
| Expiry date | Aug 31, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/50
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A first chain of custody verifiable claim is received by a second entity from a first entity. The first chain of custody verifiable claim is signed by the first entity and specifies that an object was in the custody of the first entity. A distributed ledger is accessed to verify the first chain of custody verifiable claim. A second chain of custody verifiable claim is generated that embeds the first chain of custody verifiable claim and is signed by the second entity. The second chain of custody verifiable claim is recorded on the distributed ledger. The second chain of custody verifiable claim is provided to a third entity. The second chain of custody verifiable claim is configured to specify to the third entity that the object was in the custody of the second entity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.