Table of Contents - X Suppl. 45 (12/2025) - ITU-T X.1403 – Supplement on rationale and initial approach of a decentralized identity system (DIS) based on verifiable data
1 Scope
2 References
3 Definitions
3.1 Terms defined elsewhere
3.2 Terms defined in this Supplement
4 Abbreviations and acronyms
5 Conventions
6 Introduction
7 Implementation and components of decentralized identity system
7.1 Identity assurance triangle in verification process
7.2 Decentralized identifier
7.3 Verifiable credential and verifiable presentation
7.4 Verifiable data registry, identity verification and identity assurance
8 Practical use cases
8.1 Use case 1: Managed birth certificate verification
8.2 Use case 2: Website navigation and tax payment
8.3 Use case 3: University degree/electronic transcript/micro-credential verification
8.4 Use case 4: Medical prescription verification
8.5 Use case 5: Mobile driver's license verification
8.6 Use case 6: Verifiable health credential verification
8.7 Use case 7: Age verification
8.8 Use case 8: Identity verification in KYC (know your customer) and AML (anti-money laundry) process
8.9 Use case 9: Privacy preserving employment application using university certificates
9 Usability considerations
10 Potential application of decentralized identity system
Appendix I – Example of possible implementation plan and timelines for decentralized identity system
I.1 Preliminary steps (approximately three months)
I.2 System development (approximately 15 months)
I.3 Testing, deployment, and feedback (approximately five months)
I.4 Broad adoption
Appendix II – Literature review
II.1 Existing systems
II.2 Approach
II.3 Related technologies
Page
II.4 Standards and regulations
Appendix III – Example of data format for verifiable credential of mobile driver's license in Jason
III.1 Example of verifiable credential for mobile driver's licence
Appendix IV – Properties of decentralized identifiers
IV.1 Non-re-assignable
IV.2 Resolvable
IV.3 Cryptographically verifiable
IV.4 Decentralized
Bibliography
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