{
  "@context": "https://dpp-keystone.org/spec/contexts/v1/dpp-iron-steel.context.jsonld",
  "digitalProductPassportId": "https://dpp.example.com/dpp/iron-steel-1234",
  "uniqueProductIdentifier": "https://pid.example.com/gtin/1234567890123",
  "granularity": "Batch",
  "dppSchemaVersion": "0.1",
  "dppStatus": "Active",
  "lastUpdate": "2026-04-14T12:00:00Z",
  "economicOperatorId": "https://id.example.com/org/123",
  "contentSpecificationIds": [
    "draft_iron_and_steel_specification_id"
  ],
  "purchaserOrder": "PO-998877",
  "steelGradeClassification": "Non-alloy",
  "steelDesignation": "S355J2",
  "technologyRoute": "BF-BOF",
  "manufacturerInfo": {
    "organizationName": "Acme Steel Corp"
  },
  "manufacturingDate": "2026-04-10",
  "countryOfOrigin": "DE",
  "meltAndPourCountry": "DE",
  "substancesOfConcern": [
    {
      "name": "Cobalt",
      "percentage": 0.05,
      "casNumber": "7440-48-4",
      "locationInProduct": "Throughout alloy matrix"
    }
  ],
  "mtc": {
    "yieldStrength": 355,
    "carbonContent": 0.2,
    "sulfurContent": 0.02
  }
}