AuditChain — LLM Deployment Compliance Tracker

Immutable audit trails for LLM deployments in classified networks

AuditChain automatically intercepts, encrypts, and logs every LLM API call with cryptographic proof for DoD and FedRAMP environments—addressing the exact compliance gap exposed by OpenAI's recent classified network deployment agreement. While AI providers rush into government contracts, enterprises lack tooling to prove data residency, track model behavior, and generate audit reports that satisfy NIST 800-53 and CMMC 2.0 requirements. We provide the missing compliance layer between your LLM infrastructure and regulators, with real-time policy enforcement that blocks non-compliant calls before they execute.

Key Benefits:

- Cryptographically signed audit logs with tamper-proof timestamps for every LLM interaction, satisfying DoD continuous monitoring mandates without manual documentation

- Configurable data residency enforcement that guarantees classified prompts never leave approved networks, with automatic blocking of unauthorized model endpoints or cloud regions

- Pre-built compliance templates for NIST AI RMF, CMMC 2.0, and FedRAMP that generate audit-ready reports in minutes instead of weeks of manual evidence collection

MVP Scope: Phase 1: API call logging + encryption for single LLM provider (OpenAI/Claude). Phase 2: Compliance rule engine for DoD baseline requirements. Phase 3: Immutable audit trail + dashboard. Focus on government contractors already deploying AI in classified environments.

Tech Stack: Node.js/Go (API interceptor middleware), PostgreSQL + TimescaleDB (immutable audit logs), TweetNaCl.js / libsodium (encryption), Hyperledger Fabric or Ethereum (optional blockchain anchoring), React + D3.js (compliance dashboard), Docker + Kubernetes (on-prem deployment), HashiCorp Vault (key management), gRPC (secure inter-service communication)

Components:

- {'name': 'API Call Interceptor & Logger', 'description': 'Middleware that captures all LLM API requests/responses in real-time, timestamps them, and stores immutable logs with request metadata (user, model, tokens, latency)'}

- {'name': 'Encryption & Data Residency Engine', 'description': 'End-to-end encryption layer with configurable data residency (on-prem, FedRAMP-compliant cloud, DoD regions). Ensures classified data never leaves designated networks'}

- {'name': 'Compliance Rule Engine', 'description': 'Configurable policy framework for DoD/NIST/FedRAMP requirements. Auto-flags policy violations (unauthorized model usage, data exfiltration patterns, unencrypted transmissions)'}

- {'name': 'Immutable Audit Trail & Blockchain Anchor', 'description': 'Append-only ledger with optional blockchain anchoring for tamper-proof evidence. Generates cryptographic proofs for regulatory audits'}

- {'name': 'Real-Time Compliance Dashboard & Reporting', 'description': 'Executive dashboard showing deployment status, policy violations, audit readiness. Automated compliance reports for DoD/government auditors'}

Quality assessment: Strong market fit (DoD/FedRAMP compliance gap is real and timely) with solid technical components (immutable logging, encryption, data residency), but artifact is incomplete (pitch cuts off mid-sentence), lacks implementation details/differentiation from existing audit tools, and needs deeper technical depth on cryptographic proof mechanisms to reach 0.90+.