{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://ref.openepcis.io/extensions/common/core/dpp-core-json-schema.json",
  "title": "OpenEPCIS DPP Core Schema",
  "description": "JSON Schema for OpenEPCIS DPP Core vocabulary v0.9.5. All fraction/ratio values use 0-1 decimal scale.",
  "version": "0.9.5",
  
  "$defs": {
    "Fraction": {
      "type": "number",
      "minimum": 0,
      "maximum": 1,
      "description": "A fraction/ratio value between 0 and 1 (e.g., 0.45 = 45%)"
    },
    
    "PositiveDecimal": {
      "type": "number",
      "minimum": 0,
      "description": "A non-negative decimal number"
    },
    
    "CountryCode": {
      "type": "string",
      "pattern": "^[A-Z]{2}$",
      "description": "ISO 3166-1 alpha-2 country code (e.g., DE, FR, US)"
    },
    
    "CasNumber": {
      "type": "string",
      "pattern": "^[0-9]{2,7}-[0-9]{2}-[0-9]$",
      "description": "CAS Registry Number (e.g., 7440-50-8)"
    },
    
    "EcNumber": {
      "type": "string",
      "pattern": "^[0-9]{3}-[0-9]{3}-[0-9]$",
      "description": "EC Number EINECS/ELINCS (e.g., 231-111-4)"
    },
    
    "EoriNumber": {
      "type": "string",
      "pattern": "^[A-Z]{2}[A-Z0-9]{1,15}$",
      "description": "EORI number (e.g., DE123456789012345)"
    },
    
    "RepairabilityClass": {
      "type": "string",
      "enum": ["A", "B", "C", "D", "E"],
      "description": "Repairability class from A (most repairable) to E (least repairable)"
    },
    
    "OperatorRole": {
      "type": "string",
      "enum": [
        "Manufacturer",
        "Importer",
        "Distributor",
        "Processor",
        "Trader",
        "AuthorisedRepresentative",
        "FulfilmentServiceProvider"
      ],
      "description": "Economic operator role per ESPR"
    },
    
    "AccessLevel": {
      "type": "string",
      "enum": ["Public", "AuthorizedOnly", "Restricted"],
      "description": "ESPR Article 9 access level"
    },
    
    "OperationalScope": {
      "type": "string",
      "enum": ["CradleToGate", "CradleToGrave"],
      "description": "Lifecycle boundary for emissions calculation"
    },
    
    "GranularityLevel": {
      "type": "string",
      "enum": ["ProductClass", "Batch", "Item"],
      "description": "DPP data specificity level"
    },
    
    "HazardClass": {
      "type": "string",
      "enum": [
        "AcuteToxicity",
        "SkinCorrosionOrIrritation",
        "EyeDamageOrIrritation",
        "RespiratoryOrSkinSensitization",
        "GermCellMutagenicity",
        "Carcinogenicity",
        "ReproductiveToxicity",
        "SpecificTargetOrganToxicity",
        "AspirationHazard",
        "HazardousToAquaticEnvironment"
      ],
      "description": "CLP Regulation hazard class"
    },
    
    "CircularityPerformance": {
      "type": "object",
      "description": "Circularity performance metrics",
      "properties": {
        "@type": { "const": "CircularityPerformance" },
        "recyclableContent": { "$ref": "#/$defs/Fraction" },
        "utilityFactor": { 
          "type": "number",
          "exclusiveMinimum": 0,
          "description": "Durability multiplier (1.0 = industry average)"
        },
        "materialCircularityIndicator": { "$ref": "#/$defs/Fraction" },
        "endOfLifeInstructions": { "type": "string", "format": "uri" },
        "wastePreventionInfo": { "type": "string", "format": "uri" },
        "separateCollectionInfo": { "type": "string", "format": "uri" },
        "dismantlingInstructions": { "$ref": "#/$defs/DocumentReference" }
      }
    },
    
    "RecycledContent": {
      "type": "object",
      "description": "Recycled content breakdown",
      "properties": {
        "@type": { "const": "RecycledContent" },
        "recycledContent": { "$ref": "#/$defs/Fraction" },
        "preConsumerRecycledContent": { "$ref": "#/$defs/Fraction" },
        "postConsumerRecycledContent": { "$ref": "#/$defs/Fraction" }
      }
    },
    
    "MaterialComposition": {
      "type": "object",
      "description": "Material composition information",
      "required": ["materialName"],
      "properties": {
        "@type": { "const": "MaterialComposition" },
        "materialName": { "type": "string" },
        "massFraction": { "$ref": "#/$defs/Fraction" },
        "sourceCountry": { "$ref": "#/$defs/CountryCode" },
        "isCriticalRawMaterial": { "type": "boolean" },
        "casNumber": { "$ref": "#/$defs/CasNumber" },
        "ecNumber": { "$ref": "#/$defs/EcNumber" }
      }
    },
    
    "EmissionsPerformance": {
      "type": "object",
      "description": "Emissions/carbon footprint data",
      "properties": {
        "@type": { "const": "EmissionsPerformance" },
        "carbonFootprintTotal": { "$ref": "#/$defs/PositiveDecimal" },
        "declaredUnit": { "type": "string" },
        "operationalScope": { "$ref": "#/$defs/OperationalScope" },
        "primarySourcedRatio": { "$ref": "#/$defs/Fraction" },
        "carbonFootprintStudyUrl": { "type": "string", "format": "uri" }
      }
    },
    
    "TraceabilityPerformance": {
      "type": "object",
      "description": "Supply chain traceability metrics",
      "properties": {
        "@type": { "const": "TraceabilityPerformance" },
        "verifiedRatio": { "$ref": "#/$defs/Fraction" }
      }
    },
    
    "OperatorInformation": {
      "type": "object",
      "description": "Economic operator information per ESPR. Use gs1:gln for identification.",
      "required": ["operatorRole", "gln"],
      "properties": {
        "@type": { "const": "OperatorInformation" },
        "operatorRole": { "$ref": "#/$defs/OperatorRole" },
        "gln": {
          "type": "string",
          "pattern": "^[0-9]{13}$",
          "description": "Global Location Number (GLN) - 13 digit GS1 identifier"
        },
        "organizationName": { "type": "string" },
        "economicOperatorId": { "type": "string" },
        "eoriNumber": { "$ref": "#/$defs/EoriNumber" },
        "vatIdentificationNumber": { "type": "string" },
        "registrationNumber": { "type": "string" }
      }
    },
    
    "FacilityInformation": {
      "type": "object",
      "description": "Manufacturing/processing facility information per ESPR. Use gs1:gln for identification, gs1:name for facility name, gs1:address for location.",
      "required": ["gln", "name"],
      "properties": {
        "@type": { "const": "FacilityInformation" },
        "gln": {
          "type": "string",
          "pattern": "^[0-9]{13}$",
          "description": "Global Location Number (GLN) - 13 digit GS1 identifier"
        },
        "name": {
          "type": "string",
          "description": "Facility name (inherited from gs1:Place)"
        },
        "facilityType": { "type": "string" },
        "address": {
          "type": "object",
          "description": "Facility address (inherited from gs1:Place)"
        },
        "facilityCertifications": {
          "type": "array",
          "items": { "type": "object" }
        }
      }
    },
    
    "SubstanceOfConcern": {
      "type": "object",
      "description": "Substance of concern per SCIP/REACH",
      "required": ["substanceName"],
      "properties": {
        "@type": { "const": "SubstanceOfConcern" },
        "substanceName": { "type": "string" },
        "casNumber": { "$ref": "#/$defs/CasNumber" },
        "ecNumber": { "$ref": "#/$defs/EcNumber" },
        "concentration": { "$ref": "#/$defs/Fraction" },
        "scipId": { "type": "string" },
        "hazardClass": { "$ref": "#/$defs/HazardClass" },
        "substanceLocation": { "type": "string" },
        "safeUseInstructions": { "type": "string" },
        "safeDisassemblyInstructions": { "type": "string" }
      }
    },
    
    "AccessRights": {
      "type": "object",
      "description": "ESPR Article 9 access control",
      "required": ["accessLevel"],
      "properties": {
        "@type": { "const": "AccessRights" },
        "accessLevel": { "$ref": "#/$defs/AccessLevel" },
        "authorizedParties": {
          "type": "array",
          "items": { "type": "object" }
        },
        "dataRetentionPeriod": { "type": "object" }
      }
    },
    
    "RepairabilityInfo": {
      "type": "object",
      "description": "Repairability information per ESPR",
      "properties": {
        "@type": { "const": "RepairabilityInfo" },
        "repairabilityScore": {
          "type": "number",
          "minimum": 0,
          "maximum": 10
        },
        "repairabilityClass": { "$ref": "#/$defs/RepairabilityClass" },
        "sparePartsAvailability": { "type": "object" },
        "sparePartsDeliveryTime": { "type": "object" },
        "repairInstructions": { "$ref": "#/$defs/DocumentReference" },
        "professionalRepairNetwork": { "type": "string", "format": "uri" },
        "diyRepairPossible": { "type": "boolean" },
        "softwareUpdatesAvailability": { "type": "object" }
      }
    },
    
    "PerformanceInfo": {
      "type": "object",
      "description": "Product performance and durability information",
      "properties": {
        "@type": { "const": "PerformanceInfo" },
        "expectedLifespan": { "type": "object" },
        "guaranteedLifespan": { "type": "object" },
        "usageCycles": { 
          "type": "integer",
          "minimum": 0
        },
        "technicalLifetime": { "type": "object" },
        "performanceClass": { "type": "string" },
        "testedConditions": { "type": "string" }
      }
    },
    
    "DocumentReference": {
      "type": "object",
      "description": "Reference to external document",
      "properties": {
        "@type": { "const": "DocumentReference" },
        "documentType": { "type": "string" },
        "documentUrl": { "type": "string", "format": "uri" },
        "documentTitle": { "type": "string" },
        "mimeType": { "type": "string" },
        "languageCode": { 
          "type": "string",
          "pattern": "^[a-z]{2}$"
        },
        "issueDate": { "type": "string", "format": "date" },
        "validUntil": { "type": "string", "format": "date" }
      }
    },
    
    "DueDiligenceReport": {
      "type": "object",
      "description": "Supply chain due diligence report",
      "properties": {
        "@type": { "const": "DueDiligenceReport" },
        "reportUrl": { "type": "string", "format": "uri" },
        "thirdPartyAssurancesUrl": { "type": "string", "format": "uri" },
        "reportDate": { "type": "string", "format": "date" },
        "verificationBody": { "type": "object" }
      }
    }
  },
  
  "type": "object",
  "properties": {
    "@context": {},
    "@type": { "type": "string" },
    "@id": { "type": "string" },
    
    "uniqueProductIdentifier": { "type": "string", "format": "uri" },
    "passportIdentifier": { "type": "string", "format": "uri" },
    "passportVersion": { "type": "string" },
    "passportIssueDate": { "type": "string", "format": "date" },
    "passportStatus": { "type": "string", "enum": ["Draft", "Active", "Updated", "Withdrawn", "Archived"] },
    "passportLastModified": { "type": "string", "format": "date-time" },
    "passportExpiryDate": { "type": "string", "format": "date" },
    "passportIssuer": { "$ref": "#/$defs/OperatorInformation" },
    "previousPassportVersion": { "type": "string", "format": "uri" },
    "productModel": { "type": "string" },
    "productCategory": { "type": "string" },
    "granularityLevel": { "$ref": "#/$defs/GranularityLevel" },
    
    "operatorInformation": { "$ref": "#/$defs/OperatorInformation" },
    "facilityInformation": { "$ref": "#/$defs/FacilityInformation" },
    
    "circularityPerformance": { "$ref": "#/$defs/CircularityPerformance" },
    "recycledContentDetails": { "$ref": "#/$defs/RecycledContent" },
    "emissionsPerformance": { "$ref": "#/$defs/EmissionsPerformance" },
    "traceabilityPerformance": { "$ref": "#/$defs/TraceabilityPerformance" },
    
    "materialComposition": {
      "type": "array",
      "items": { "$ref": "#/$defs/MaterialComposition" }
    },
    
    "substancesOfConcern": {
      "type": "array",
      "items": { "$ref": "#/$defs/SubstanceOfConcern" }
    },
    
    "performanceInfo": { "$ref": "#/$defs/PerformanceInfo" },
    "repairabilityInfo": { "$ref": "#/$defs/RepairabilityInfo" },
    "accessRights": { "$ref": "#/$defs/AccessRights" },
    "dueDiligenceReport": { "$ref": "#/$defs/DueDiligenceReport" },
    
    "documents": {
      "type": "array",
      "items": { "$ref": "#/$defs/DocumentReference" }
    },
    
    "carbonFootprint": { "type": "object" },
    "carbonFootprintTotal": { "$ref": "#/$defs/PositiveDecimal" },
    "declaredUnit": { "type": "string" },
    
    "lastDataUpdate": { "type": "string", "format": "date-time" },
    "dataQualityAssessment": { "type": "string" },
    "dataProviderCertification": { "type": "string" },
    
    "regulatoryReferenceNumber": { "type": "string" },
    "complianceDate": { "type": "string", "format": "date" },
    "complianceStatus": { "type": "boolean" }
  }
}