Seller Proof
Sellers can prove they physically possess a card before you buy — without creating a marketplace listing.
Maak een Seller Proof →Verify a seller's proof
Got a link like collectorstashmarket.com/seller-proof/v/… from a seller? Paste it below or enter the URL directly.
How it works
1
Seller creates a proof
The seller enters the card name and gets a unique challenge code (CSP-XXXX-XXXX).
2
Take a photo with your camera
Take a photo of the card directly with your camera. Optionally write the code on paper and include it in the shot for an even stronger signal.
3
Automatic check
We automatically check the photo and generate a trust score.
4
Buyer gets a verification link
The seller shares their proof link. You see the trust score, challenge code, and all signals — valid for 48 hours.
Important: Seller Proof is a possession signal, not a guarantee.
It cannot verify card condition, authenticity, or grade. It is not escrow or buyer protection.
Always exercise caution when buying from unknown sellers.
Collector Stash Market is not responsible for transactions outside our platform.
Are you a seller? Create a Seller Proof right here — no account required.
Create a Seller Proof →