ITU-T Work Programme

[2025-2028] : [SG17] : [Q10/17]

[Declared patent(s)] - [Associated work] - [Publication]

Work item:

X.Suppl.45 (ex TR.divs)

Subject/title:

Supplement to X.1403: Rationale and initial approach of a decentralized identity system (DIS) based on verifiable data

Status:

Agreed on 2025-12-11 [Issued from previous study period]

Approval process:

Agreement

Type of work item:

Supplement

Version:

New

Equivalent number:

Timing:

Liaison:

ISO/IEC JTC 1/SC 27/WG 5, ISO TC 307, W3C, IETF Internet Area, ICANN OCTO

Supporting members:

Korea (Republic of), Soonchunhyang University, KISA, ETRI

Summary:

In our everyday physical interactions, identity assurance is established through various identification systems and legal frameworks that secure and protect both parties in any transaction or service. Unfortunately, the digital world lacks an equivalent mechanism for introducing such identity assurance, leaving a void that has become increasingly apparent in our interconnected global environment. A decentralized identity system (DIS) aims to bridge this gap by introducing the identity assurance of the physical world (e.g., governmental entities) into the digital space. By leveraging secure cryptographic systems and prior lessons (technical and operational) to design a robust digital identity framework that ensures identity assurance across stakeholders, the DIS is a digital identity framework that can serve as a layer of identity assurance. This Supplement provides concept, components, practical use cases, and implementation considerations of a decentralized identity system (DIS). It also addresses usability aspects and identifies potential applications areas of the DIS. The Supplement focuses on technical aspects of DIS, including use of blockchain technology or other distributed repository, cryptography, and self-sovereign identity principles, as well as the application of verifiable credentials.

Comment:

Reference(s):

[SG17-TD132R1/WP1 (2025-12)

]