dppvalidator is the "GDPR compliance engine" for physical products, enforcing the strict digital syntax required for the EU's Digital Product Passport.

EU Digital Product Passport for Biosphere Solar panels

Local Optimization with Overflow Protocol (LOOP) — the open protocol specification for federated circular economy infrastructure. Defines how cities track, exchange, and settle materials and products across boundaries while maintaining local sovereignty.

📜 Validate EU Digital Product Passports with this open-source compliance engine, ensuring adherence to standards and enhancing product traceability.