# WIA-UNI-002: Phase 4 - WIA Integration Specification

**Version:** 1.0
**Status:** Complete
**Last Updated:** 2025-01-15

---

## 1. Overview

This document specifies how WIA-UNI-002 integrates with the broader WIA ecosystem, including cross-standard interoperability, registry integration, and certification requirements.

## 2. WIA Registry Integration

### 2.1 Standard Registration

**Registry Entry:**
```json
{
  "standardId": "WIA-UNI-002",
  "name": "Unified ID System",
  "category": "UNI",
  "version": "1.0",
  "status": "active",
  "schemaUrl": "https://wiastandards.com/schemas/uni-002/v1.0/",
  "specUrl": "https://github.com/WIA-Official/wia-standards/tree/main/standards/unified-id-system/spec"
}
```

### 2.2 DID Method Registration

**Method:** `did:wia:uni-kr:{unified-id}`

**Example:**
```
did:wia:uni-kr:UNI-KR-900515-1234
```

**DID Document:**
```json
{
  "@context": "https://www.w3.org/ns/did/v1",
  "id": "did:wia:uni-kr:UNI-KR-900515-1234",
  "verificationMethod": [{
    "id": "did:wia:uni-kr:UNI-KR-900515-1234#key-1",
    "type": "Ed25519VerificationKey2020",
    "controller": "did:wia:uni-kr:UNI-KR-900515-1234",
    "publicKeyMultibase": "z6Mk..."
  }],
  "authentication": ["#key-1"],
  "assertionMethod": ["#key-1"]
}
```

## 3. Cross-Standard Interoperability

### 3.1 WIA-SOCIAL Integration

**Use Case:** Social service delivery

```javascript
// Citizen verifies identity for social benefits
const idProof = await unifiedIdClient.generateProof({
  type: "citizenship",
  attributes: ["age-over-18"]
});

// Social service system verifies
const socialCredential = await wiaocialClient.issueCredential({
  identityProof: idProof,
  benefitType: "housing_assistance"
});
```

### 3.2 WIA-MED Integration

**Use Case:** Healthcare access

```javascript
// Link unified ID to medical record
const medicalRecord = await wiaMedClient.createPatientRecord({
  unifiedId: "UNI-KR-900515-1234",
  consentProof: zkProof
});

// Access medical services across providers
const appointment = await wiaMedClient.bookAppointment({
  patientDid: "did:wia:uni-kr:UNI-KR-900515-1234",
  provider: "Seoul National Hospital"
});
```

### 3.3 WIA-FIN Integration

**Use Case:** Financial services KYC

```javascript
// Open bank account with unified ID
const kycResult = await wiaFinClient.performKYC({
  identityCredential: unifiedIdCredential,
  riskAssessment: "standard"
});

// Issue financial credential
const bankCredential = await wiaFinClient.issueCredential({
  type: "BankAccountCredential",
  linkedIdentity: "did:wia:uni-kr:UNI-KR-900515-1234"
});
```

## 4. WIA API Gateway

### 4.1 Single Sign-On

All WIA services accessible with unified ID:

```http
POST https://api.wiastandards.com/auth/sso
Authorization: Bearer {unified_id_token}

{
  "requestedServices": ["WIA-SOCIAL", "WIA-MED", "WIA-FIN"]
}

Response:
{
  "accessTokens": {
    "WIA-SOCIAL": "token_social_...",
    "WIA-MED": "token_med_...",
    "WIA-FIN": "token_fin_..."
  }
}
```

### 4.2 Unified Rate Limiting

Quotas shared across all WIA services:

| Plan | Total Requests/Hour | Per-Service Limit |
|------|---------------------|-------------------|
| Free | 1,000 | 100 |
| Standard | 10,000 | 1,000 |
| Premium | 100,000 | 10,000 |
| Enterprise | Unlimited | Custom |

## 5. Certification Program

### 5.1 Certification Levels

**Bronze - Basic Compliance**
- Self-attestation
- Basic security audit
- Annual review
- Cost: $1,000/year

**Silver - Third-Party Audit**
- Independent security audit
- Penetration testing
- Semi-annual review
- Cost: $5,000/year

**Gold - Continuous Monitoring**
- Real-time monitoring
- Quarterly audits
- Bug bounty program
- Cost: $25,000/year

**Platinum - Mission-Critical**
- Formal verification
- Continuous compliance
- Dedicated support
- Cost: $100,000/year

### 5.2 Certification Process

1. **Application**: Submit implementation for review
2. **Technical Review**: Code audit, security assessment
3. **Interoperability Testing**: Verify compatibility
4. **Privacy Assessment**: Evaluate privacy protections
5. **Certification**: Award certificate, list in registry
6. **Ongoing Compliance**: Regular audits, updates

### 5.3 Certification Checklist

- [ ] JSON Schema compliance (100% pass)
- [ ] API specification conformance
- [ ] Cryptographic standards (NIST validation)
- [ ] Privacy impact assessment
- [ ] Interoperability with WIA ecosystem
- [ ] Security penetration testing
- [ ] 99.9%+ uptime (Gold+)
- [ ] < 500ms response time
- [ ] Documentation completeness
- [ ] Open-source components disclosed

## 6. International Cooperation

### 6.1 Mutual Recognition Agreements

**EU eIDAS:**
- Map WIA-UNI-002 to eIDAS assurance levels
- Cross-recognition for EU services
- Data privacy compliance (GDPR)

**US NIST 800-63:**
- Identity Assurance Level (IAL) mapping
- Authenticator Assurance Level (AAL) mapping
- Federation Assurance Level (FAL) mapping

**APAC Digital Identity:**
- Regional identity framework participation
- Cross-border verification standards
- Data sovereignty compliance

### 6.2 Refugee Support

**UNHCR ProGres Integration:**
```javascript
// Register refugee with unified ID
const refugeeCredential = await unhcrClient.registerRefugee({
  unifiedId: "UNI-KR-900515-1234",
  countryOfOrigin: "North Korea",
  displacementReason: "political_asylum"
});

// Portable identity for resettlement
const resettlementPackage = await createPortableIdentity({
  unifiedIdCredential,
  refugeeCredential,
  targetCountry: "Canada"
});
```

## 7. Future Roadmap

### 7.1 Planned Enhancements

| Version | Target Date | Features |
|---------|-------------|----------|
| 1.1 | 2026 Q1 | Mobile-first, additional biometrics |
| 1.2 | 2026 Q3 | IoT integration, smart home |
| 2.0 | 2027 Q1 | Quantum-resistant crypto |
| 2.1 | 2027 Q4 | AI fraud detection |

### 7.2 Research Areas

- Post-quantum cryptography migration
- Decentralized identifier evolution
- AI-powered identity verification
- Biometric liveness detection
- Cross-chain blockchain interoperability

---

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