What is CheckCOA?

CheckCOA is an all-in-one verification hub for collectors. It helps you check COA/LOA and grading certificates across the world’s most trusted providers in one place, and keeps a searchable record of your results.

What you can do:

• Verify certificates: Check autograph authentication (COA/LOA) and graded items (cards, comics, photos, video games, etc.).
• View official data: See official result fields returned directly by the Provider (item details, signer, grade, population when available).
• Fraud Alert protection: Every check is also screened against our database of certificate numbers reported as fake, reused, or compromised.
• Save history: Every check is saved to your personal Scan History.
• Build a catalog: Use Collections and Wishlist to organize your items, complete with your own photos and purchase prices.
• Advanced tools: Dealer plans allow for bulk CSV checks and data exports.