{
      "name": "digital-product-passport-lineage",
      "domain": "Supply-Chain Traceability",
      "title": "Digital Product Passport Lineage (EU ESPR / CIRPASS-2 / GS1 Digital Link)",
      "description": "Validate DPP data carrier against CIRPASS-2 Core Ontology (art-115) → build cradle-to-gate hash-only supplier lineage with carbon aggregation (art-116) → verify consumer/resale authenticity + ownership continuity (art-117). EU Central DPP Registry live 19 Jul 2026.",
      "composer_url": "https://ainumbers.co/chaingraph/chains/digital-product-passport-lineage.html",
      "steps": [
        {
          "tool_id": "art-115-dpp-data-carrier-validator",
          "handoff": "CIRPASS-2 conformance result feeds lineage building"
        },
        {
          "tool_id": "art-116-product-lineage-builder",
          "handoff": "anchored supplier lineage feeds authenticity verification"
        },
        {
          "tool_id": "art-117-product-authenticity-verifier",
          "handoff": "Exports authenticity artifact with execution_hash — final stage"
        }
      ]
    }