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OCG-Industries Showcase · Cluster ⑫ Physical Supply-Chain and Goods Provenance

Anti-Counterfeit
Consumer Verification

Enter the GTIN and serial printed on the item, the seller's stated model, the model on the item's digital product passport, and, if you have one, the passport digest from a previous run. This tool checks four independent signals: the GTIN checksum, whether a serial is present, whether the two model names match, and whether the passport digest matches what you have on record, then counts how many hold. A consistent result means the printed identifiers line up with the passport values you entered. It is not proof the item is genuine: a counterfeit that copies a real identifier will look consistent too, which is exactly why the digest reference matters when you have one.

Data: GS1 General Specifications · Regulation (EU) 2024/1781 (ESPR)

What's Printed on the Item STEP 1
8, 12, 13, or 14 digits, mod-10 check digit
What the Passport Says STEP 2
Leave blank if you have not run the passport tool for this item
Status
—
Consistent, partial, or inconsistent
Signals Aligned
—
Of 4 independent checks
Digest Check
—
Match, mismatch, or no reference
Detail
GTIN valid—
Check digit expected—
Check digit entered—
Serial present—
Model match—
Scanned digest (mutation detector, not a cryptographic digest)—
Digest check—
Signal count—
Status—
Policy Mandate v2.0 · what is this?

Exhibit: a worked example that computes in your browser. It is not regulatory-grade output. Source card on AINumbers: industry card c12-4.