Cryptographically verifiable audit trail for AI systems — Ed25519 signed, hash-chained Decision Receipts with ISO 42001 / NIST AI RMF compliance. No blockchain, no SaaS.

Write-once, read-only evidence vault for Keon-governed workflows. Stores sealed evidence packs, receipts, and verification artifacts for audit and review.

Official CLG wrapper for Model Context Protocol: tamper-evident decision and outcome receipts and real-time mandate enforcement for MCP tool calls.