Regulatory Guide
EU AI Act Audit Trail Requirements
Mandatory logging and audit trail obligations for high-risk AI systems under the EU Artificial Intelligence Act.
The EU Artificial Intelligence Act, which entered into force in August 2024, imposes mandatory audit trail and logging requirements on all high-risk AI systems operating in or affecting persons within the European Union. Financial services AI systems, including credit scoring, fraud detection, algorithmic trading, and insurance risk assessment models, fall squarely within the high-risk classification under Annex III.
Article 12 of the EU AI Act requires high-risk AI systems to automatically generate logs throughout their operational lifetime. These logs must capture the start and end of each use session, the input data processed, and any outputs produced by the system. Crucially, logs must be retained for a period sufficient to allow post-hoc auditing and must be accessible to deployers, providers, and national supervisory authorities. The Act also requires providers of high-risk AI systems to maintain technical documentation demonstrating compliance, including risk management records and post-market monitoring reports.
Audital’s append-only, cryptographically sealed event log satisfies Article 12 requirements by design. Each event is timestamped via RFC 3161, chained using SHA-256, and stored in write-once object storage, creating an audit record that is both comprehensive and verifiable. Firms can export EU AI Act-aligned technical documentation packages for any registered model at any point.
EU AI Act Article 12 Requirements
- ✓Automatic logging throughout the operational lifetime of the system
- ✓Capture of input data, outputs, and decision parameters
- ✓Logs retained for minimum period specified by sector law (typically 5 years for financial services)
- ✓Logs accessible to deployers and national competent authorities
- ✓Technical documentation maintained and updated throughout lifecycle
- ✓Post-market monitoring reports filed with notified body where applicable
Preparing for EU AI Act Enforcement
Full enforcement of obligations for high-risk AI systems begins in August 2026. Firms deploying AI in financial services should begin building compliant audit infrastructure now to avoid enforcement gaps. Audital provides pre-configured EU AI Act evidence packages and continuous compliance monitoring, mapping every recorded event to the relevant Article 12 sub-requirement automatically.
Questions? Contact us at contact@audital.ai