{
  "sources": 12,
  "files": 60,
  "variants_per_source": [
    "original",
    "screenshot",
    "resized",
    "jpeg_compressed",
    "metadata_stripped"
  ],
  "transform_settings": {
    "screenshot": "Chrome headless 1280x900, image rendered within 1120x780 on a neutral background, PNG output",
    "resized": "longest side at most 1024 px, Lanczos, JPEG quality 88",
    "jpeg_compressed": "original dimensions, JPEG quality 60",
    "metadata_stripped": "decoded RGB pixels re-encoded as PNG without metadata",
    "edited_source": "color saturation 1.16 and visible EDITED SAMPLE overlay, JPEG quality 94"
  },
  "detector": "community-forensics-384.onnx",
  "c2pa_verifier": "c2patool 0.26.60",
  "notes": [
    "This is a transformation case study, not an accuracy benchmark.",
    "Visual model scores are raw observations and are not used to claim correctness.",
    "Blank official watermark fields mean the check was not run, not that a watermark was absent."
  ]
}