Digital Product Passports are becoming the compliance and circularity backbone for regulated supply chains. But many pilots still rely on platform-controlled databases and audit logs. Certus Ledger adds an independent anchoring layer so DPP claims remain verifiable years later—across vendors, borders, and audits.
In practice, “DPP” often means a web portal plus a database. That can work operationally, but it creates a trust problem: when evidence is stored and validated inside the same platform, third parties must accept “trust our logs.”
Certus Ledger’s approach is different: it anchors cryptographic commitments (hashes / Merkle roots) of material events to an external, append-only ledger so later changes become detectable and verification remains independent.
Only cryptographic commitments are anchored—verification works without exposing sensitive content.
Auditors and counterparties can validate integrity without privileged platform access.
Evidence remains verifiable across migrations, vendor changes, or corporate failure.
Anchoring aligns to real lifecycle transitions, not just “final state” snapshots.
Merkle-root batching enables efficient anchoring for high-volume event streams.
Certus Ledger is the cryptographic evidence layer for DPP: it turns lifecycle claims into independently verifiable proof, without putting sensitive data on-chain.