A Digital Product Passport carries dozens of regulated fields — recycled content, hazardous-substance flags, carbon footprint. Without source attribution each value is just a claim. With it, every value carries a pointer back to the line in the SDS, the row in the bill of materials, or the page of the EN 71 test report it was read from.
TracePass attaches a source citation to every value its AI proposes, so the human approver sees the original document and page next to the proposed value before publishing. That citation persists in the audit trail, so months later anyone can trace a published number to its evidence — useful evidence when an authority asks for the technical documentation that ESPR Article 27(3) requires manufacturers to keep for 10 years once a product's delegated act applies.
Frequently asked
How is source attribution different from a confidence score?
A confidence score tells you how sure the AI is about a value; source attribution tells you where the value came from. You usually want both: the score triages what to review, the attribution lets you verify it against the original document.
Why does an authority care about source attribution?
Under ESPR the economic operator must be able to substantiate every passport value on request. A field that points back to a named document and page turns a verification request from a file-hunt into a single click.