Every action on the platform emits an audit event through a single enforced code path, and each event is cryptographically linked to the previous one, so any later modification is detectable. Every piece of captured evidence has its SHA-256 hash computed at capture time and recorded in the audit trail; on retrieval, the hash is recomputed and verified, and any mismatch halts the operation and raises a tamper-detection alert. Evidence is built to ALCOA+ principles from capture through storage. Audit trails, evidence, and signature manifestations export in both human-readable and machine-readable form.