CHLOM Metaprotocol — Decentralized Audit Layer — Immutable Forensics and Regulatory Reporting Framework

This document defines the Decentralized Audit Layer (DAL) within the CHLOM Metaprotocol. The DAL is the backbone for immutable, tamper-proof, and verifiable storage of all compliance, governance, and licensing transactions across Web2, Web3, and multi-chain systems. It supports forensic investigations, regulatory audits, and policy dispute resolution with mathematically verifiable data integrity.

1. Purpose & Scope

The DAL provides:

• Distributed, cryptographically-secured audit trails for all CHLOM-enabled operations.
• Support for real-time and historical compliance reporting.
• Immutable storage of event logs across multiple chains and off-chain distributed storage (e.g., IPFS, Filecoin).
• Integration with DIDs and biometric multi-sig for actor verification.
• Automated policy-triggered evidence capture.

2. Architecture Overview

• Audit Event Collector: Aggregates compliance, governance, and transaction events.
• Hashing & Signing Engine: Applies SHA-256 or BLAKE3 hashing, signs with DID + fingerprint private keys.
• Storage Layer: Writes to blockchain-native storage and redundant off-chain systems.
• Query & Retrieval API: Allows authorized parties to retrieve audit records via secure APIs.
• Compliance Analyzer: Runs automated audits, anomaly detection, and generates reports.

3. Data Model (JSON Schema)

{
  "auditId": "uuid",
  "eventType": "POLICY_UPDATE|TRANSACTION|ACCESS_ATTEMPT",
  "timestamp": "2025-08-08T12:00:00Z",
  "actorDID": "did:chlom:entity",
  "fingerprintId": "fingerprint-hash",
  "eventDataHash": "sha256-hex",
  "signature": "base64-encoded",
  "storageRefs": ["ipfs://hash", "chain://blocknumber"]
}

4. Solidity Audit Logger Example

// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.24;

contract AuditLogger {
    event AuditLog(
        string auditId,
        string eventType,
        string actorDID,
        string eventDataHash,
        uint256 timestamp
    );

    function logEvent(
        string calldata auditId,
        string calldata eventType,
        string calldata actorDID,
        string calldata eventDataHash
    ) external {
        // DID & fingerprint validation should occur here
        emit AuditLog(auditId, eventType, actorDID, eventDataHash, block.timestamp);
    }
}

5. Off-Chain Audit Storage Example (Node.js)

const fs = require('fs');
const { storeToIPFS, signData } = require('./auditUtils');

async function storeAuditEvent(event) {
  const signedEvent = {
    ...event,
    signature: signData(event)
  };

  const ipfsHash = await storeToIPFS(JSON.stringify(signedEvent));
  fs.appendFileSync('audit_log.txt', `${JSON.stringify({ ...signedEvent, ipfsHash })}\n`);
  return ipfsHash;
}

6. Audit Workflow

1. Event generated by CHLOM component.
2. Event hashed, signed, and optionally encrypted.
3. Stored on-chain and in distributed off-chain storage.
4. Storage references recorded in DAL index.
5. Authorized retrieval via secure API or blockchain query.

7. Security & Forensics

• Immutable ledger across multiple chains.
• Biometric multi-sig for event source authentication.
• Forensic evidence sealed with zero-knowledge proofs (ZKPs) for sensitive data.
• Automated compliance report generation for regulators.

8. Patent & Licensing Protections

The Decentralized Audit Layer is patent-pending, covering distributed, DID-authenticated, multi-chain audit storage and retrieval for compliance and governance frameworks. Any usage requires a license via crownthrive.com.

Next: CHLOM Zero-Knowledge Compliance Proofs — Confidential Policy Verification Without Data Exposure.