Decentralized Licensing Authority (DLA) — Smart Contract Architecture Spec (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 on-chain architecture for the smart contracts powering the TLAAS protocol within the DLA. This specification outlines the modular contract design, security controls, and upgrade mechanisms needed to enforce licensing rules, compliance checks, and interoperability with other CHLOM components.

2. Core Smart Contract Modules

• License Token Contract
• ERC-721 or ERC-1155 compatible NFT representing licenses.
• Extended metadata fields for compliance, identity, and operational parameters.
• License Lifecycle Contract
• Functions for issuance, renewal, suspension, revocation, and expiry.
• State machine enforcing valid status transitions.
• Compliance Enforcement Contract
• Hooks for AI-driven compliance checks before license state changes.
• Integration with ZK-proof verifiers.
• Identity Binding Contract
• Stores hashed Fingerprint IDs.
• Links licenses to verified DIDs.
• Governance Contract
• DAO-controlled updates to protocol parameters.
• Multi-signature authorization for high-risk actions.
• Audit Logging Contract
• Immutable event logging for every license action.
• Public read-access for transparency.

3. Interoperability Contracts

• DLA → LEX (TLaaS)
• On-chain verification functions returning license status and compliance proof.
• DLA → DAL
• Payout approval hooks ensuring only valid licenses trigger distributions.
• External Integrations
• Public verification endpoints with privacy-preserving proof access.

4. Security Architecture

• Role-Based Access Control (RBAC)
• Roles: DAO Admin, Compliance Officer, License Issuer, Public Verifier.
• Fail-Safe Mechanisms
• Circuit breaker to pause all license operations in emergencies.
• Immutable Records
• No overwrite of historical license data.
• Upgradeable Contracts
• Proxy pattern for controlled upgrades without breaking existing licenses.

5. Example Solidity Contract Skeleton

pragma solidity ^0.8.0;

contract LicenseToken {
    struct LicenseData {
        string licenseId;
        address owner;
        string ownerDID;
        bytes32 fingerprintHash;
        uint256 issueDate;
        uint256 expiryDate;
        string status;
    }

    mapping(string => LicenseData) public licenses;

    function issueLicense(string memory _licenseId, address _owner, string memory _ownerDID, bytes32 _fingerprintHash, uint256 _expiryDate) public {
        licenses[_licenseId] = LicenseData(_licenseId, _owner, _ownerDID, _fingerprintHash, block.timestamp, _expiryDate, "Active");
    }
}

6. Phase Allocation

• Phase 0 — Define contract modules, roles, and upgradeability framework.
• Phase 1 — Implement core license and lifecycle contracts.
• Phase 2 — Integrate compliance enforcement and identity binding.
• Phase 3 — Conduct audits, stress tests, and penetration testing.
• Phase 4 — Deploy on mainnet with DAO-controlled governance.
• Phase 5 — Extend contract features for industry-specific license models.

Next Step: Proceed to Document 5 — Integration Architecture (Phase 0) for DLA to map the complete data flow between DLA, LEX, DAL, and external systems.