{
  "provider": "Media Empire",
  "regulation": "Regulation (EU) 2024/1689 (AI Act), article 50(2)",
  "verify": "https://media.successarchitect.fr/ai-check",
  "keys": [],
  "signed": false,
  "why_not_signed": "No C2PA or other signature: a signature trusted by verifiers needs a certificate from the C2PA trust list (cost disproportionate for this provider, AI Act article 50(2)). Detection relies on the metadata below and on the provider’s log of fingerprints, queried at the verify address.",
  "metadata": {
    "standard": "XMP (ISO 16684-1) with IPTC Photo Metadata 2025.1 properties",
    "namespaces": {
      "Iptc4xmpExt": "http://iptc.org/std/Iptc4xmpExt/2008-02-29/",
      "mediaempire": "http://ns.successarchitect.fr/media-empire/ai-mark/1.0/"
    },
    "properties": [
      "Iptc4xmpExt:DigitalSourceType",
      "Iptc4xmpExt:AISystemUsed",
      "Iptc4xmpExt:AISystemVersionUsed",
      "xmp:CreatorTool",
      "xmpMM:DocumentID",
      "mediaempire:GenerationID",
      "mediaempire:Verify"
    ],
    "digital_source_types": {
      "generee": "http://cv.iptc.org/newscodes/digitalsourcetype/trainedAlgorithmicMedia",
      "retouchee": "http://cv.iptc.org/newscodes/digitalsourcetype/compositeWithTrainedAlgorithmicMedia",
      "composee": "http://cv.iptc.org/newscodes/digitalsourcetype/compositeSynthetic"
    },
    "generation_id": "urn:mediaempire:gen:<uuid>",
    "containers": {
      "png": "iTXt chunk \"XML:com.adobe.xmp\"",
      "jpeg": "APP1 segment \"http://ns.adobe.com/xap/1.0/\"",
      "webp": "\"XMP \" chunk (VP8X extended format)",
      "mp4": "top-level uuid box BE7ACFCB-97A9-42E8-9C71-999491E3AFAC, and the comment tag",
      "wav": "\"_PMX\" chunk, and the INFO comment",
      "mp3": "ID3v2 COMM and TXXX:DigitalSourceType",
      "ogg_flac": "Vorbis comments COMMENT and DIGITALSOURCETYPE"
    },
    "upstream_c2pa": "a file that already carries a C2PA manifest from the model provider is left untouched"
  },
  "logging": {
    "exact": "SHA-256 of the file as stored and served",
    "perceptual": "dHash 64 bits (image), five dHash at the middle of five equal slices (video)",
    "text": "SHA-256 of the NFKC-lowercased text without punctuation, and of each passage of 8 words or more",
    "content_kept": false,
    "account_kept": false
  },
  "not_marked": [
    "background removal",
    "subtitles transcribed from the user’s voice (unless the input was itself generated)",
    "short sequences of words",
    "search queries and prompts sent to a model",
    "the agent’s replies in its conversation"
  ]
}