{
  "evidence_level": "other_ai_provenance_marker",
  "summary": "AI-related provenance markers were found, but they are not a definitive attribution by themselves.",
  "signal_matrix": [
    {
      "signal": "Provenance",
      "status": "Detected",
      "strength": "ai_provenance_marker",
      "notes": "trainedAlgorithmicMedia marker detected."
    },
    {
      "signal": "Byte Markers",
      "status": "Detected",
      "strength": 2,
      "notes": "Raw file marker scan; strings can be injected or stripped."
    },
    {
      "signal": "C2PA Verification",
      "status": "Not Detected",
      "strength": "absent",
      "notes": "No C2PA manifest was verified."
    },
    {
      "signal": "Camera Evidence",
      "status": "Supportive Only",
      "strength": 0.1746066602554115,
      "notes": "camera_like_jpeg"
    },
    {
      "signal": "Frequency Evidence",
      "status": "Above Reference Threshold",
      "strength": 0.8176971549695403,
      "reference": 0.7418555425813717,
      "notes": "Threshold-relative forensic signal only."
    }
  ],
  "provenance_evidence": {
    "has_c2pa_marker": false,
    "has_xmp_marker": true,
    "has_trained_algorithmic_media": true,
    "has_openai_media_service": false,
    "has_google_media_service": false,
    "has_synthid_marker": false,
    "exif_present": false,
    "exif_make": "",
    "exif_model": "",
    "exif_software": "",
    "ai_origin_hint": "ai_generated",
    "c2pa_verification_status": "absent",
    "c2pa_verifier": "none",
    "c2pa_verification_detail": "",
    "c2pa_verification": {
      "presence": "absent",
      "manifest_status": "absent",
      "signature_status": "absent",
      "trust_status": "not_applicable",
      "asset_binding_status": "not_applicable",
      "ingredient_status": "absent",
      "signer": "",
      "claim_generator": "",
      "validation_errors": [],
      "validation_warnings": [],
      "verifier_name": "none",
      "verifier_version": "",
      "legacy_status": "absent",
      "detail": ""
    },
    "evidence_label": "ai_provenance_marker",
    "status": "Detected",
    "has_ai_marker": true,
    "is_verified_openai": false
  },
  "byte_marker_evidence": {
    "path": "inputs/ai-03.jpg",
    "file_size": 41111,
    "has_openai_marker": false,
    "has_c2pa_marker": false,
    "has_xmp_marker": true,
    "has_trained_algorithmic_media": true,
    "has_synthid_marker": false,
    "matches": [
      {
        "marker": "xmp",
        "offset": 41022,
        "context": "B��8��@�g99����)�.҄�p2.�>��.��A�g��.<x:xmpmeta creatorTool=\"Controlled AI Export\" "
      },
      {
        "marker": "trainedAlgorithmicMedia",
        "offset": 41084,
        "context": "ontrolled AI Export\" digitalSourceType=\"trainedAlgorithmicMedia\"/>."
      }
    ],
    "status": "Detected"
  },
  "c2pa_verification_status": "absent",
  "c2pa_verification": {
    "presence": "absent",
    "manifest_status": "absent",
    "signature_status": "absent",
    "trust_status": "not_applicable",
    "asset_binding_status": "not_applicable",
    "ingredient_status": "absent",
    "signer": "",
    "claim_generator": "",
    "validation_errors": [],
    "validation_warnings": [],
    "verifier_name": "none",
    "verifier_version": "",
    "legacy_status": "absent",
    "detail": ""
  },
  "camera_evidence": {
    "exif_present": false,
    "exif_make": "",
    "exif_model": "",
    "exif_software": "",
    "jpeg_quantization_present": true,
    "jpeg_quantization_tables": 2,
    "jpeg_subsampling": "((2, 2), (1, 1), (1, 1))",
    "jpeg_luma_quant_mean": 11.5,
    "jpeg_chroma_quant_mean": 17.34375,
    "residual_noise_score": 0.012284159737193307,
    "cfa_grid_score": 2.2938048917498876e-07,
    "formation_score": 0.24606660255411505,
    "camera_score": 0.1746066602554115,
    "evidence_label": "camera_like_jpeg",
    "status": "Supportive Only"
  },
  "frequency_evidence": {
    "status": "Above Reference Threshold",
    "score_name": "composite_score",
    "score": 0.8176971549695403,
    "reference_threshold": 0.7418555425813717,
    "features": {
      "fft_grid_score": 1.9926396506255197,
      "fft_peak_score": 1.9450546320249649,
      "fft_high_energy_ratio": 0.8945393661793948,
      "dct_mid_high_ratio": 0.5638047497417127,
      "dwt_hh_energy": 0.07026489668543989,
      "composite_score": 0.8176971549695403
    },
    "note": "Frequency scores are threshold-relative research signals, not probabilities."
  },
  "risk_notes": [
    "This report is an evidence checklist, not a definitive AI detector.",
    "Metadata and raw byte markers can be stripped, copied, or injected.",
    "No C2PA manifest was verified. This is absence of provenance, not proof of manipulation.",
    "Frequency evidence is above the reference threshold but remains supportive only."
  ],
  "disclaimers": [
    "OpenAI/C2PA markers do not mean the signature has been verified.",
    "Missing metadata does not mean the image is not AI-generated.",
    "Frequency scores are not probabilities and are not legal attribution."
  ]
}