{
  "type": ["DigitalTraceabilityEvent", "VerifiableCredential"],
  "@context": [
    "https://www.w3.org/ns/credentials/v2",
    "https://vocabulary.uncefact.org/untp/0.8.0/context/",
    "https://ref.gs1.org/standards/epcis/2.0.0/epcis-context.jsonld"
  ],
  "id": "https://credentials.sample-refinery.example.com/dte/refine-cathode-2025-0320",
  "issuer": {
    "type": ["CredentialIssuer"],
    "id": "did:web:sample-refinery.example.com",
    "name": "Sample Copper Refinery Co. Ltd",
    "issuerAlsoKnownAs": [
      {
        "type": ["Party"],
        "id": "https://www.sample-register.example.com/henkorireki-johoto.html?selHouzinNo=REF-001",
        "name": "Sample Copper Refinery Co. Ltd",
        "registeredId": "REF-001",
        "idScheme": {
          "type": ["IdentifierScheme"],
          "id": "https://www.sample-register.example.com",
          "name": "Japan Corporate Number (Houjin Bangou)"
        }
      }
    ]
  },
  "validFrom": "2025-03-06T00:00:00Z",
  "validUntil": "2026-03-06T00:00:00Z",
  "name": "Electrorefining of Anode Batch 2025-Q1-0805 into Cathode Batch 2025-Q1-0812 — Sample Smelter",
  "issuingSoftware": {
    "id": "https://sample-software-vendor.example.com/.well-known/untp/software/passport-builder/2026.04.1",
    "name": "Sample Passport Builder",
    "version": "2026.04.1",
    "vendor": {
      "id": "did:web:sample-software-vendor.example.com",
      "name": "Sample Software Vendor Inc"
    }
  },
  "credentialSubject": [
    {
      "type": "TransformationEvent",
      "eventID": "https://sample-refinery.example.com/events/refine-charge-2025-0306",
      "eventTime": "2025-03-06T01:00:00Z",
      "eventTimeZoneOffset": "+09:00",
      "transformationID": "https://sample-refinery.example.com/transformations/refine-2025-0306",
      "bizLocation": {
        "id": "https://facility-register.example.com/fac-002"
      },
      "inputQuantityList": [
        {
          "epcClass": "https://id.sample-refinery.example.com/product/cu-anode-2025/batch/2025-Q1-0805",
          "quantity": 10100,
          "uom": "KGM"
        }
      ]
    },
    {
      "type": "TransformationEvent",
      "eventID": "https://sample-refinery.example.com/events/refine-harvest-2025-0320",
      "eventTime": "2025-03-20T05:00:00Z",
      "eventTimeZoneOffset": "+09:00",
      "transformationID": "https://sample-refinery.example.com/transformations/refine-2025-0306",
      "bizStep": "creating_class_instance",
      "disposition": "active",
      "bizLocation": {
        "id": "https://facility-register.example.com/fac-002"
      },
      "outputQuantityList": [
        {
          "epcClass": "https://id.sample-refinery.example.com/product/cu-cathode-2025/batch/2025-Q1-0812",
          "quantity": 10000,
          "uom": "KGM"
        },
        {
          "epcClass": "https://id.sample-refinery.example.com/product/anode-slimes-2025/batch/2025-Q1-0320",
          "quantity": 100,
          "uom": "KGM"
        }
      ],
      "bizTransactionList": [
        {
          "type": "cert",
          "bizTransaction": "https://credentials.sample-cab.example.com/dcc/smelter-002"
        }
      ]
    }
  ]
}