The marketplace where every card is verified by a GRADEX device before it goes live — and every graded card carries a verifiable digital certificate. Launching alongside the device.
No blind trust. No stock-photo listings. Every card that enters the marketplace passes through a GRADEX device first.
Sellers scan the exact card they are selling. The spectral fingerprint and grade are attached to the listing — not a stock photo, the actual card.
Each graded card carries a verifiable digital certificate bound to its spectral scan. Anyone can check authenticity and grading history before buying.
On delivery, the buyer re-scans the card. Spectral data must match the original listing scan — then the trade settles.
Every completed trade builds a seller's verifiable track record, anchored to their device and verification history.
A card's price is set by what it looks like in a photograph. Its authenticity is decided by things a photograph cannot show.
A counterfeit can match the colour of a card on camera while the ink formulation is wrong. Colour is what the eye checks; formulation is what the sensor checks — and that gap is where most online card fraud lives.
A trimmed card photographs as a well-centred card. A resealed grading case photographs as a graded card. Neither defect shows up in the pictures a seller chooses to post, and both change what the card is worth.
When the scan itself is attached to the listing, a buyer is not reading a claim — they are reading a measurement taken from that specific card before it shipped. The two are not the same kind of evidence.
Collectors who buy, sell and trade high-value cards and want the physical object verified — not just the seller's reputation.
You see what was measured on the card you are buying. On delivery you scan it again — if the spectral data does not match the listing scan, the trade does not settle.
A verified listing removes the argument before it starts. Your track record is anchored to measurements rather than to feedback scores anyone can farm.
Trades run on the same two-way check as sales: both sides verify, so neither side has to take the other's word for what is inside the package.
Verification is not a black box. These guides cover what a collector can check by hand — and where hand checks stop being reliable.
A graded card's value sits in its label, and labels can be copied. The verification order that catches most fake slabs.
Trimming is the most profitable alteration in the hobby. How to measure a card, read its edges, and why it survives most visual inspection.
What paper fluorescence actually shows, how to run the test properly, and the ways it is commonly misread.
The marketplace opens with the first devices. Reserve yours to get early access.
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