Each fibre in a material's composition can be certified on its own, and those certificates and claims carry through review onto the product and the public passport.
A composition row can be proven with a certificate, a declared standard, a self-declared claim, or “no certificate available”. A named material reads “Covered by composition” when one of its fibres is certified, and the reviewer sees a per-fibre breakdown: certified, self-declared, awaiting certificate, or not provided.
Material identity is keyed on name, fibre set and supplier, so Twill in cotton and Twill in cotton with elastane are treated as distinct and keep their own certificates.
On acceptance, each fibre's claim and its certificate persist onto the product, and the public passport renders the localised claim label.
Review corrections work alongside: when a composition certificate is rejected, its row stays in the Rejected tab with inline Replace, Self-declare and No-certificate actions, and flips to Corrected once re-proven.