Distributions Authority (DAL) — API Design Docs (Phase 0 — High-Level)

Document Version: 1.0 Date: August 8, 2025 Author: CrownThrive, LLC — [email protected] Project: CHLOM™ — Compliance Hybrid Licensing & Ownership Model

1. Objective

Define the high-level API specifications for DAL to enable secure, scalable, and verifiable communication between DLA, LEX, compliance modules, and external systems. Phase 0 focuses on endpoint structure, authentication strategy, error taxonomies, and rate limiting policies.

2. API Principles

• Security-First: All endpoints require cryptographic authentication (JWT + signature verification).
• REST + WebSocket Hybrid: REST for transactional operations; WebSockets for real-time payout events.
• Versioned Endpoints:
• Idempotency: Safe retries for payout requests.
• JSON-First: All payloads in JSON, following CHLOM data contract schemas.

3. Core Endpoint Categories

• Payout Management
• POST /payouts/initiate
• GET /payouts/{id}
• POST /payouts/batch
• License Verification
• GET /licenses/{id}/verify
• Identity & Routing
• GET /identity/{did}
• POST /identity/update
• Compliance & Proofs
• GET /compliance/{payoutId}
• GET /proofs/{payoutId}
• Dispute Management
• POST /disputes/create
• GET /disputes/{id}

4. Authentication & Authorization

• JWT issued via CHLOM Auth Service.
• HMAC Signatures for payload integrity.
• Role-Based Access Control (RBAC) tied to DID + Fingerprint ID.
• OAuth2 for external integration partners.

5. WebSocket Channels

• /ws/payouts/live
• /ws/disputes/live
• /ws/compliance/alerts

6. Error Taxonomy

• 4xx (Client Errors)
• 400_BAD_REQUEST
• 401_UNAUTHORIZED
• 403_FORBIDDEN
• 404_NOT_FOUND
• 409_CONFLICT
• 5xx (Server Errors)
• 500_INTERNAL_ERROR
• 503_SERVICE_UNAVAILABLE

7. Rate Limiting & Throttling

• Default: 100 requests/min per API key.
• High-Privilege Routes: 20 requests/min.
• Burst Mode: Temporary allowance for batch payouts.

8. Sample Request & Response

POST /v1/payouts/initiate
{
  "licenseId": "LIC-9F3C",
  "amount": "500.00",
  "currency": "USDC",
  "beneficiaries": [
    { "did": "did:chlom:abc", "percent": 60.0 },
    { "did": "did:chlom:def", "percent": 40.0 }
  ],
  "fingerprintId": "hash123",
  "complianceCheck": true
}

{
  "payoutId": "PO-2381",
  "status": "QUEUED",
  "ledgerLink": "ledger://block/123",
  "proofs": { "zk": "ipfs://cid" }
}

9. Phase Allocation

• Phase 0 — Define endpoint list, authentication model, and error taxonomy.
• Phase 1 — Implement core payout and identity APIs with mock services.
• Phase 2 — Integrate with DLA/LEX compliance hooks.
• Phase 3 — Add WebSocket live updates and dispute workflows.
• Phase 4 — Harden for security, add rate limiting and anomaly detection.
• Phase 5 — Scale and extend for cross-industry integrations.

Next Step: Proceed to Automation Runbooks for DAL (Phase 0) to define operational scripts, triggers, and escalation workflows.