{
  "type": "object",
  "title": "Proof",
  "description": "Proof of delivery or pickup evidence, including photos, signatures, OTP confirmations, or digital receipts. Maps to beckn:Document. ",
  "required": [
    "id",
    "type",
    "timestamp"
  ],
  "properties": {
    "id": {
      "type": "string",
      "example": "POD-SHP001-001"
    },
    "shipmentId": {
      "type": "string",
      "example": "SHP-2024-001234"
    },
    "type": {
      "type": "string",
      "enum": [
        "PHOTO",
        "SIGNATURE",
        "OTP",
        "BIOMETRIC",
        "DIGITAL_RECEIPT",
        "DOCUMENT_SCAN"
      ],
      "example": "PHOTO"
    },
    "subType": {
      "type": "string",
      "description": "What was captured",
      "enum": [
        "DELIVERED_AT_DOOR",
        "DELIVERED_TO_PERSON",
        "LEFT_AT_SAFE_PLACE",
        "HANDED_TO_NEIGHBOUR",
        "PICKUP_CONFIRMED"
      ],
      "example": "DELIVERED_TO_PERSON"
    },
    "mediaUrl": {
      "type": "string",
      "format": "uri",
      "description": "URL to proof media (photo/signature image)"
    },
    "signatureData": {
      "type": "string",
      "description": "Base64-encoded signature data"
    },
    "otpVerified": {
      "type": "boolean",
      "description": "Whether OTP was verified for delivery",
      "example": true
    },
    "recipientName": {
      "type": "string",
      "description": "Name of person who received the package",
      "example": "Anita Sharma"
    },
    "recipientRelation": {
      "type": "string",
      "description": "Relation to consignee if not consignee",
      "example": "Spouse"
    },
    "location": {
      "type": "object",
      "properties": {
        "lat": {
          "type": "number"
        },
        "lng": {
          "type": "number"
        }
      }
    },
    "timestamp": {
      "type": "string",
      "format": "date-time"
    },
    "driverSignoff": {
      "type": "boolean",
      "description": "Driver confirmed successful delivery",
      "example": true
    }
  },
  "$id": "https://schema.nfh.global/Proof/v2.0",
  "x-iri": "https://schema.nfh.global/Proof/v2.0",
  "$schema": "https://json-schema.org/draft/2020-12/schema"
}