AuditVanguard
Verify tool

Prove the chain
wasn't touched.

Drop a signed auditvanguard_audit_log_*.json here. We'll re-walk every SHA-256 hash in the chain and re-verify the outer HMAC signature server-side. No login required.

Drop the signed JSON here
…or use the file picker.
How it works. Every AuditVanguard audit-log export embeds a per-client SHA-256 hash chain and an outer HMAC-SHA256 signature keyed with our server-side JWT secret. Verification re-walks every entry and re-computes the signature. Any post-download edit — even a single character in a detail field — will surface as either a broken chain or a signature mismatch.
© 2026 AuditVanguard. GSGD Field Solutions LLC — Secure Systems. Defensible Results.