{
  "testedAt": "2026-09-09",
  "sample": "gpt-generated-sample-original.png",
  "description": "One GPT-generated PNG returned unchanged; not a ChatGPT web-download comparison.",
  "bytes": 1766177,
  "sha256": "da38495a0a3c99697dac7575e58cebdce69f7d34b515bf9dcffe87805b99454f",
  "c2paContainer": { "pngChunk": "caBX", "payloadBytes": 21844 },
  "method": "Local PNG/JUMBF parsing and CBOR claim/actions decoding. Binary certificate and timestamp material not fully decoded. No external verifier upload.",
  "signatureVerified": false,
  "watermarkTested": false,
  "actionsComplete": false,
  "fields": {
    "claimGenerator": "OpenAI Media Service API",
    "softwareAgent": { "name": "gpt-image", "version": "2.0" },
    "digitalSourceType": "http://cv.iptc.org/newscodes/digitalsourcetype/trainedAlgorithmicMedia",
    "actions": ["c2pa.created", "c2pa.converted", "c2pa.watermarked.unbound"],
    "actionTime": "2026-09-09T00:00:00+00:00",
    "instanceID": "xmp:iid:3bf5009c-b181-4b33-bc90-fb546737816f",
    "title": "image.png"
  },
  "notFoundInParsedClaimAndActions": ["generation prompt", "name of user", "email", "account field"],
  "limitations": "Absence applies only to parsed declarations in this sample. It is not an anonymity guarantee or independent verification of software version, actions, time, or creator identity. Display WebP previews are not the original test file."
}