Review the issuer, product details, supporting documents and integrity evidence to understand what a passport tells you.
A Digital Product Passport associates information with a product. Its format and technical foundations can vary; this guide describes useful checks for issuer, file, product and ownership information.
Start ReviewFind the product identifier on the item, its documentation or the seller's information. A QR code or NFC tag may link directly to the associated record.
A blockchain-based passport may include:
A scan can open the linked product information in a compatible mobile experience.
Some passports include a blockchain reference. When one is provided, use the linked explorer to inspect the record and its published details.
Check:
These checks provide context about the record's technical source; they do not establish that the product is genuine.
Review the issuer information included with the passport and compare it with information from the brand, maker or creator.
Compare:
This helps identify who supplied the passport information.
Some passport formats include a cryptographic fingerprint of a file. If the method and recorded value are provided, compare them with a fingerprint calculated from the file.
For a file-integrity check:
The file matches the recorded fingerprint.
The file differs from the recorded fingerprint or the comparison method differs.
The passport contains information describing the asset, including high-resolution images.
Compare:
Confirm that the asset in your possession matches the asset described in the passport.
A close match supports the association between the record and the item, but visual and document checks still need judgment.
If ownership information is included, review its source, date and meaning. A wallet address or token record alone does not establish the legal owner of a physical item.
Compare the recorded wallet address with:
A matching address indicates control of the associated digital account or token; interpret it according to the passport's ownership model.
These checks help readers assess the sources and meaning of the information in a product passport:
The issuer is identifiable and matches the brand or creator.
Supporting documents and source information are available for review.
A file-integrity check matches the recorded evidence, where provided.
The product details and images correspond with the item being inspected.
Ownership information has a clear source and context.
Each check addresses a different question. Together, the issuer, documents, file integrity, product details and ownership context give a fuller basis for assessing the record.
| Verification Item | What to Check |
|---|---|
| Issuer | Brand, maker or creator details and source |
| Documents | Certificates and supporting product information |
| Record integrity | File fingerprint or other integrity evidence |
| Product match | Details and images compared with the physical item |
| Ownership | Ownership record and its source |
| Blockchain reference | Network and record references, when provided |
