What is signing proof?
Signing proof is the evidence that links a specific autograph or shirt to a trustworthy source. On Walkouts this includes Certificates of Authenticity and Letters of Authentication, witnessed signing details, exact photo or video proof, photo match for match worn items, and modern NFC verification. These proof types guide buyers toward confident decisions.
Certificate of Authenticity (COA)
A COA confirms that a signature or shirt has been examined or witnessed by a recognized authenticator. Look for a verifiable serial, clear item details, and a well known issuer, since reputation drives collector confidence and value.
Letter of Authentication (LOA)
An LOA documents the analysis without adding stickers or tags to the shirt. It often includes a matching photo and a unique reference, which is useful when you prefer a pristine garment with documentation kept off the item.
Witnessed signing sessions
When an expert observes the player signing, the session produces immediate certification and clean, display friendly autographs. Listings can note the date, place, and the witnessing party for transparency.
Photo and video proof
Photo proof connects the player to the exact shirt. Exact photo proof shows the moment of signing for that item, while video proof records the signing in real time. Both raise trust and resale appeal.
Photo match for match worn
For match worn shirts, photo match compares unique wear or markings to game images. This links the shirt to a specific match and adds historical significance for collectors.
Digital NFC
Some shirts include an NFC chip you can tap with a phone to view authentication data, match history, and verification in a connected database. This is difficult to replicate and enables instant checks.
FAQ
What counts as strong signing proof?
A combination of trusted COA or LOA, witnessed signing details, exact photo or video proof, photo match for match worn, and NFC verification on supported shirts.
Is a COA enough on its own?
Often yes if it is from a reputable authenticator with a verifiable serial. Pairing a COA with photo or video proof strengthens provenance.
COA or LOA, when should I choose each?
Use a COA when a serialized tag and quick lookup are preferred. Choose an LOA when you want documentation without labeling the shirt itself.
What makes exact photo proof different from standard photo proof?
Exact photo proof shows the specific moment your shirt was signed and matches placement and ink, while standard photo proof may only show the player with the item.
How do NFC tags help collectors?
NFC adds instant on item verification and links to secure data such as match history and certification, which reduces counterfeit risk and improves buyer confidence.