What is a certified sign-off certificate?
By the Usertack Team · June 4, 2026 · 3 min read
Short answer
A certified sign-off certificate is a tamper-evident record of an approval that states who approved, what they approved, and when—and can be independently verified by anyone with the certificate ID. It turns “approved” into proof.
Approval you can prove
Most approvals live in inboxes and chats—easy to lose, easy to dispute. A certified sign-off is different: it's a standalone certificate tied to the exact deliverable, recording the approver's identity, the item, and the timestamp.
Why “verifiable” matters
A certificate is only useful if it can't be faked. A verifiable sign-off carries a unique ID that either party can check independently, so the record stands on its own—no need to trust a screenshot. If a client ever questions the approval, you point to the certificate.
What's on the certificate
- •The approver's name and the date and time.
- •The specific project or version approved.
- •A unique, checkable certificate ID.
- •A record that both sides can keep.
Usertack issues a certified sign-off on every approval, on every plan—free included. Because it's produced from the same link the client used to review, the certificate is always tied to the work they actually saw, which is what makes it hold up.
Frequently asked questions
What is a sign-off certificate?+
A tamper-evident record of an approval that states who approved, what, and when, with a unique ID anyone can verify.
How is a certified sign-off verified?+
Each certificate carries a unique ID that either party can check independently, so the approval doesn't rely on trusting a screenshot or email.
Do I need a certificate if I already have an email?+
A certificate is stronger: it's tied to the exact version, records identity and time, and is independently verifiable—unlike an email that can be lost or denied.
Try Usertack free
Send one review link, collect pinned feedback with no client accounts, and turn every approval into a certified sign-off.