{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://hogarmas.net/content-credentials/receipt-schema.json",
  "title": "H/M privacy-minimized Content Credentials receipt",
  "description": "Unsigned share receipt that excludes file identifiers. Its enclosing URL payload uses a SHA-256 consistency checksum, not a cryptographic signature or sender identity proof.",
  "type": "object",
  "additionalProperties": false,
  "required": ["schema", "tool", "ruleset", "verifier", "observed", "privacy", "limitations"],
  "properties": {
    "schema": { "const": "hm.content-credentials-receipt.v1" },
    "tool": { "const": "https://hogarmas.net/content-credentials/" },
    "ruleset": { "type": "string", "pattern": "^[0-9]{4}-[0-9]{2}-[0-9]{2}\\.[0-9]+$" },
    "verifier": {
      "type": "object",
      "additionalProperties": false,
      "required": ["name", "sdk", "sdkVersion", "c2paTarget"],
      "properties": {
        "name": { "const": "H/M Content Credentials Inspector" },
        "sdk": { "const": "@contentauth/c2pa-web" },
        "sdkVersion": { "enum": ["0.8.1", "0.13.1"] },
        "c2paTarget": { "const": "2.4" }
      }
    },
    "observed": {
      "type": "object",
      "additionalProperties": false,
      "required": ["manifestPresent", "manifestCount", "integrity", "signerTrust", "aiOrigin", "digitalSourceTypes", "actionCount", "ingredientCount", "validationCodes"],
      "properties": {
        "manifestPresent": { "type": "boolean" },
        "manifestCount": { "type": "integer", "minimum": 0, "maximum": 80 },
        "integrity": { "enum": ["valid", "invalid", "unknown", "not-applicable"] },
        "signerTrust": { "enum": ["trusted", "untrusted", "unknown", "not-applicable"] },
        "aiOrigin": { "enum": ["declared", "source-type-observed", "not-observed"] },
        "digitalSourceTypes": { "$ref": "#/$defs/textArray" },
        "actionCount": { "type": "integer", "minimum": 0, "maximum": 80 },
        "ingredientCount": { "type": "integer", "minimum": 0, "maximum": 80 },
        "validationCodes": { "$ref": "#/$defs/textArray" }
      }
    },
    "privacy": {
      "type": "object",
      "additionalProperties": false,
      "required": ["fileNameIncluded", "fileHashIncluded", "fileBytesIncluded", "certificateSerialIncluded", "rawExplanationsIncluded", "sourceFileUploaded", "urlFragmentSentInHttpRequest", "urlFragmentMayAppearInBrowserHistory"],
      "properties": {
        "fileNameIncluded": { "const": false },
        "fileHashIncluded": { "const": false },
        "fileBytesIncluded": { "const": false },
        "certificateSerialIncluded": { "const": false },
        "rawExplanationsIncluded": { "const": false },
        "sourceFileUploaded": { "const": false },
        "urlFragmentSentInHttpRequest": { "const": false },
        "urlFragmentMayAppearInBrowserHistory": { "const": true }
      }
    },
    "limitations": {
      "type": "object",
      "additionalProperties": false,
      "required": ["cryptographicallySignedReceipt", "senderIdentityVerified", "semanticTruthProven", "aiAbsenceProven", "legalComplianceCertified"],
      "properties": {
        "cryptographicallySignedReceipt": { "const": false },
        "senderIdentityVerified": { "const": false },
        "semanticTruthProven": { "const": false },
        "aiAbsenceProven": { "const": false },
        "legalComplianceCertified": { "const": false }
      }
    }
  },
  "$defs": {
    "textArray": {
      "type": "array",
      "maxItems": 80,
      "uniqueItems": true,
      "items": { "type": "string", "maxLength": 320 }
    }
  }
}