GOA is the official mobile authentication tool from Grading Owl Authentication that lets you verify the authenticity of GOA-graded cards quickly and securely. The app reads an NFC-embedded cryptographic authenticator in each graded card with a simple tap, or it can confirm details when you enter the card's certification number manually. GOA also keeps a searchable activity history of checks so you can revisit past verifications. It's useful for anyone who needs a straightforward, on-the-go way to confirm a card's grading record and maintain a log of lookups.
Key Features
⭐ Tap-to-verify using the NFC chip embedded in each GOA-graded card, delivering the card's grading information instantly.
⭐ Manual certification number lookup to retrieve grading details when NFC isn’t available or preferred.
⭐ NFC chip stores an unclonable cryptographic authenticator that ensures the card's authenticity can be checked reliably.
⭐ Activity page records your search history so you can review past verifications and keep a local log.
Advantages
✅ Confirms authenticity by reading an unclonable cryptographic authenticator built into the card.
✅ Fast, contact-based verification with a phone tap or quick manual lookup by certification number.
✅ Keeps a persistent activity history for easy reference of previous checks and validations.
✅ Designed specifically for GOA-graded cards, providing targeted verification for that grading system.
Disadvantages
❎ Only verifies cards graded and equipped with GOA's NFC authentication; it won't authenticate cards from other grading services.
❎ NFC tap requires a phone with NFC capability; devices without NFC must rely on manual number entry.
❎ Manual verification requires having the card's certification number available to retrieve full grading details.
