Verify
Confirm a signed document hasn't changed.
Paste the envelope ID from any KeenDraft Certificate of Completion. We'll show whether the document and its audit chain are intact. No account required.
What gets checked
Three things, in plain English.
We never look at the contents of your document. Only the hashes and the audit chain.
Hash integrity
The signed PDF’s SHA-256 still matches the value recorded at signing time.
Audit chain continuity
Every event links cryptographically to the previous one. A single break is detectable.
Full event timeline
See exactly when the envelope was created, opened, signed, and completed.
What you'll see
Two states, no ambiguity.
Document verified
Chain matches original.
- Original hash matches.
- Audit chain unbroken.
- All recipients verified.
Tamper detected
Chain broken at event #7.
- Hash mismatch.
- Event signature invalid.
- Document should not be trusted.
Curious how the hash chain works? Read the explainer →