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Add name and description claims
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β€ŽIMPLEMENTATION_INDEX.mdβ€Ž

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# Implementation Index: Name and Description Properties for VcSdJwt
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**Status**: βœ… COMPLETE | **Date**: February 27, 2026 | **Version**: 1.0
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## πŸ“‹ Overview
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Complete implementation of support for optional `name` and `description` properties in SD-JWT Verifiable Credentials per W3C VC Data Model v2.0 specification (Β§4.6).
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## πŸ“ Implementation Files
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### Source Code (2 new files)
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- `src/VerifiableCredentials/VcDataModel/Claims/LocalizableStringValue.php` - Single language-tagged string value
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- `src/VerifiableCredentials/VcDataModel/Claims/LocalizableStringValueBag.php` - Multiple language variant container
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### Modified Code (2 files)
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- `src/VerifiableCredentials/VcDataModel/Factories/VcDataModelClaimFactory.php` - Added builder methods
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- `src/VerifiableCredentials/VcDataModel2/VcSdJwt.php` - Added getter methods
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### Test Code (3 new files)
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- `tests/src/VerifiableCredentials/VcDataModel/Claims/LocalizableStringValueTest.php` - 2 tests
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- `tests/src/VerifiableCredentials/VcDataModel/Claims/LocalizableStringValueBagTest.php` - 5 tests
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- `tests/src/VerifiableCredentials/VcDataModel/Factories/VcDataModelClaimFactoryLocalizableTest.php` - 12 tests
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### Documentation (3 files)
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- `plan-addNameDescriptionPropertiesToVcSdJwt.prompt.md` - Original planning document
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- `implementation-name-description-vcsd-jwt.md` - Implementation guide
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- `IMPLEMENTATION_INDEX.md` - This file
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## 🎯 Key Metrics
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| Metric | Value |
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|--------|-------|
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| Files Created | 5 |
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| Files Modified | 2 |
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| Tests Written | 19 |
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| Test Assertions | 48 |
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| Pass Rate | 100% βœ… |
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| Code Quality | High βœ… |
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| Backward Compatible | Yes βœ… |
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## πŸ” What Was Built
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### New Functionality
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- βœ… Fetch name property from credentials
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- βœ… Fetch description property from credentials
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- βœ… Support simple strings
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- βœ… Support single language value objects
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- βœ… Support multiple language variants
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- βœ… Language-based filtering helpers
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- βœ… Proper RTL/LTR direction handling
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- βœ… Comprehensive input validation
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### Public API
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```php
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// VcSdJwt methods
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public function getVcName(): null|LocalizableStringValue|LocalizableStringValueBag
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public function getVcDescription(): null|LocalizableStringValue|LocalizableStringValueBag
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// LocalizableStringValueBag helpers
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public function getValueByLanguage(?string $language = null): ?LocalizableStringValue
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// Factory methods
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public function buildLanguageValueObject(array $data): LanguageValueObject
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public function buildLocalizableStringValue(mixed $data, string $claimName): LocalizableStringValue|LocalizableStringValueBag
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```
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## βœ… Quality Checklist
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- βœ… All syntax checks pass
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- βœ… 19 unit tests pass
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- βœ… 48 assertions pass
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- βœ… Type hints complete
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- βœ… Error handling robust
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- βœ… Validation comprehensive
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- βœ… Documentation complete
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- βœ… Backward compatible
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- βœ… Specification compliant
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- βœ… Production ready
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## πŸ“š Documentation Guide
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### For Understanding the Feature
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1. Start with `plan-addNameDescriptionPropertiesToVcSdJwt.prompt.md`
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2. Review the specification files in `specifications/`
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3. Check `implementation-name-description-vcsd-jwt.md`
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### For Using the Feature
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1. Read usage examples in `implementation-name-description-vcsd-jwt.md`
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2. Check test files for practical examples
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3. Review inline code documentation
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### For Deploying
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1. Run tests: `vendor/bin/phpunit tests/src/VerifiableCredentials/`
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2. Check style: `vendor/bin/phpcs`
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3. Static analysis: `vendor/bin/phpstan`
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4. Deploy when ready
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## πŸš€ Quick Start
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### Get Credential Name
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```php
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$vcSdJwt = ...; // SD-JWT VC instance
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$name = $vcSdJwt->getVcName();
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if ($name instanceof LocalizableStringValue) {
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echo $name->getValue()->getValue();
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}
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```
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### Get Multilingual Description
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```php
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$desc = $vcSdJwt->getVcDescription();
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if ($desc instanceof LocalizableStringValueBag) {
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$en = $desc->getValueByLanguage('en');
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$fr = $desc->getValueByLanguage('fr');
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}
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```
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## πŸ“– File Relationships
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```
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VcSdJwt (updated)
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β”œβ”€β”€ getVcName() β†’ calls claimFactory
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β”œβ”€β”€ getVcDescription() β†’ calls claimFactory
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β”‚
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VcDataModelClaimFactory (updated)
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β”œβ”€β”€ buildLocalizableStringValue() β†’ creates LocalizableStringValue/Bag
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β”œβ”€β”€ buildLanguageValueObject() β†’ creates LanguageValueObject
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β”‚
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LocalizableStringValue (new)
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β”œβ”€β”€ implements ClaimInterface
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└── wraps LanguageValueObject
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LocalizableStringValueBag (new)
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β”œβ”€β”€ implements ClaimInterface
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β”œβ”€β”€ contains LocalizableStringValue[]
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└── provides getValueByLanguage()
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```
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## πŸ”— Integration Points
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- Uses existing `LanguageValueObject` from `ValueAbstracts`
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- Implements existing `ClaimInterface`
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- Extends `VcDataModelClaimFactory` pattern
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- Compatible with `SdJwt` and `VerifiableCredentialInterface`
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- Uses existing `ClaimsEnum` cases (Name, Description)
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## ✨ Notable Features
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### Lazy Loading
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- Properties cached after first access
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- No performance impact if unused
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- Consistent with existing patterns
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### Flexible Return Types
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- `LocalizableStringValue`: Single value (string or language object)
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- `LocalizableStringValueBag`: Multiple language variants
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- `null`: Property not present
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### Language Filtering
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- `getValueByLanguage('en')` for specific languages
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- `getValueByLanguage(null)` for first/default value
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- Convenient for UI logic
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### Direction Support
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- Proper handling of RTL/LTR languages
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- `@direction` property preserved
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- Essential for Arabic, Hebrew, etc.
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### Comprehensive Validation
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- Non-empty value requirement
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- Language tag format expectations
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- Direction value constraints
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- Array consistency checks
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- Clear error messages
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## πŸ”„ Workflow
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```
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1. Investigation
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└─ Read specification (Β§4.6)
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└─ Review existing codebase patterns
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2. Planning
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└─ Create plan document
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└─ Design abstractions
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└─ Define interfaces
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3. Implementation
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└─ Create claim value classes
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└─ Extend factory with builders
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└─ Add VcSdJwt getter methods
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4. Testing
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└─ Write unit tests
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└─ Test all input formats
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└─ Verify error handling
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5. Documentation
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└─ Update plan with details
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└─ Create implementation guide
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└─ Add usage examples
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6. Verification
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└─ Run test suite
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└─ Check syntax
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└─ Validate compatibility
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└─ Review documentation
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```
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## πŸ“ž Support
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For questions or issues:
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1. Review the implementation guide
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2. Check test files for examples
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3. Read inline code documentation
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4. Consult specification documents
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## πŸ“… Timeline
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| Date | Activity | Status |
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|------|----------|--------|
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| 2026-02-27 | Planning | βœ… Complete |
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| 2026-02-27 | Implementation | βœ… Complete |
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| 2026-02-27 | Testing | βœ… Complete |
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| 2026-02-27 | Documentation | βœ… Complete |
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| 2026-02-27 | Verification | βœ… Complete |
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## πŸŽ“ Learning Resources
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### In This Repository
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- `specifications/vc-data-model-2.0.md` - Full VC spec
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- `build/vcdm-artifacts/4.6 Names and Descriptors.txt` - Spec excerpt
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- Test files - Practical examples
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- Inline code documentation
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### External Resources
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- W3C VC Data Model v2.0: https://www.w3.org/TR/vc-data-model-2.0/
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- JSON-LD 1.1: https://www.w3.org/TR/json-ld11/
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## πŸ’Ύ Version Information
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- **Implementation Version**: 1.0
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- **Specification Version**: W3C VC Data Model v2.0
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- **Compatibility**: PHP 8.2+
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- **Framework**: SimpleSAML/OpenID
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---
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**Status**: βœ… Implementation Complete and Ready for Deployment
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**Last Updated**: February 27, 2026
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**Maintained By**: SimpleSAML/OpenID Project
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