Help Center

Certificate number formats are not globally unique across all Providers. Selecting the Provider ensures the check runs against the correct official source.

That scan type becomes unavailable until your next billing cycle. You can upgrade your plan or buy one-time packs to continue immediately.

No. One-time packs are non-expiring (unless explicitly stated otherwise at checkout).

Payments are processed securely by Stripe. CheckCOA never stores your full card details.

No. We are not affiliated with any Provider. We only display the information the Provider returns from its official sources.

No. We do not authenticate items. We only retrieve and display official Provider records for the certificate number you check.

In many cases, yes — CheckCOA can retrieve official results through our infrastructure even when a Provider site blocks direct access. Availability depends on the Provider’s current restrictions and uptime.

We support major global Providers for autograph verification and grading across cards, photos, video games, comics, and media. The supported list may expand over time.

Fraud Alert checks your certificate number against a database of compromised numbers (reported as stolen, reused, or linked to counterfeits). It is a safety layer to help you avoid risky items.

Not necessarily, but it is a strong warning. It means the certificate number has been associated with suspicious activity (like sticker theft or multiple copies). You should verify the item's provenance carefully.