GOA

Grading Owl is the official mobile authentication tool of Grading Owl Authentication (GOA). It verifies the authenticity of a GOA-graded card.

1. NFC and Certification Number Check

Each GOA-graded card is embedded with an NFC chip which stores an unclonable cryptographic authenticator of the card.

With an easy tap on the phone, users can easily access the grading information of a GOA-graded card. Users can also check the information by inputting the certification number manually.

2. Activity

Upon checking the record of each GOA-graded card, the app will record the users' history. Users can revisit search records through the "Activity" page.