The European Union's Ecodesign for Sustainable Products Regulation (ESPR, EU 2024/1781) and the Green Claims Directive (ECGT, EU 825/2024) establish binding requirements for verified, traceable sustainability claims at product level. This paper describes algorithmic material exhaustion control — a verification mechanism that cross-checks certified material volumes declared in Transaction Certificates against actual garment production at gram-per-unit granularity, automatically blocking label issuance when certified material is mathematically exhausted. An industry audit covering 656,309 yards of production identified 44.21% non-compliant material in a real brand deployment. The paper defines the architectural requirements for compliant DPP verification and situates the approach within the regulatory obligations of ESPR, ECGT, CSRD, and CSDDD.
Stefano Cipriani Studio, Prato, Italy (Tue,) studied this question.