{
  "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": 21,
      "notes": "Raw file marker scan; strings can be injected or stripped."
    },
    {
      "signal": "C2PA Verification",
      "status": "Supportive Only",
      "strength": "verifier_error_marker_detected",
      "notes": "The signature may be intact, but the signer is not trusted by the configured trust policy."
    },
    {
      "signal": "Camera Evidence",
      "status": "Supportive Only",
      "strength": 0.17220339225958714,
      "notes": "camera_like_jpeg"
    },
    {
      "signal": "Frequency Evidence",
      "status": "Below Reference Threshold",
      "strength": 0.6714100226055274,
      "reference": 0.7418555425813717,
      "notes": "Threshold-relative forensic signal only."
    }
  ],
  "provenance_evidence": {
    "has_c2pa_marker": true,
    "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": "verifier_error_marker_detected",
    "c2pa_verifier": "c2patool",
    "c2pa_verification_detail": "{\n  \"active_manifest\": \"urn:uuid:828b19c8-a70e-4a3f-84df-763967f7d372\",\n  \"manifests\": {\n    \"urn:uuid:828b19c8-a70e-4a3f-84df-763967f7d372\": {\n      \"claim_generator\": \"Adobe_Firefly\",\n      \"claim_generator_info\": [\n        {\n          \"name\": \"Adobe_Firefly\",\n          \"org.contentauth.c2pa_rs\": \"0.65.0\"\n        }\n      ],\n      \"title\": \"Generated image\",\n      \"format\": \"image/jpeg\",\n      \"instance_id\": \"xmp:iid:93a99d27-2472-4d38-8c6c-f0d3a5817881\",\n      \"thumbnail\": {\n        \"format\": ",
    "c2pa_verification": {
      "presence": "manifest_present",
      "manifest_status": "well_formed",
      "signature_status": "valid",
      "trust_status": "untrusted",
      "asset_binding_status": "valid",
      "ingredient_status": "absent",
      "signer": "Adobe Inc.",
      "claim_generator": "Adobe_Firefly",
      "validation_errors": [],
      "validation_warnings": [
        "signingCredential.untrusted",
        "timeStamp.validated",
        "timeStamp.trusted",
        "claimSignature.insideValidity",
        "claimSignature.validated",
        "assertion.hashedURI.match",
        "assertion.hashedURI.match",
        "assertion.hashedURI.match",
        "assertion.dataHash.match",
        "signingCredential.untrusted"
      ],
      "verifier_name": "c2patool",
      "verifier_version": "c2patool 0.26.67",
      "legacy_status": "verifier_error_marker_detected",
      "detail": "{\n  \"active_manifest\": \"urn:uuid:828b19c8-a70e-4a3f-84df-763967f7d372\",\n  \"manifests\": {\n    \"urn:uuid:828b19c8-a70e-4a3f-84df-763967f7d372\": {\n      \"claim_generator\": \"Adobe_Firefly\",\n      \"claim_generator_info\": [\n        {\n          \"name\": \"Adobe_Firefly\",\n          \"org.contentauth.c2pa_rs\": \"0.65.0\"\n        }\n      ],\n      \"title\": \"Generated image\",\n      \"format\": \"image/jpeg\",\n      \"instance_id\": \"xmp:iid:93a99d27-2472-4d38-8c6c-f0d3a5817881\",\n      \"thumbnail\": {\n        \"format\": "
    },
    "evidence_label": "ai_provenance_marker",
    "status": "Detected",
    "has_ai_marker": true,
    "is_verified_openai": false
  },
  "byte_marker_evidence": {
    "path": "inputs/c2pa-02.jpg",
    "file_size": 1047024,
    "has_openai_marker": false,
    "has_c2pa_marker": true,
    "has_xmp_marker": true,
    "has_trained_algorithmic_media": true,
    "has_synthid_marker": false,
    "matches": [
      {
        "marker": "c2pa",
        "offset": 48,
        "context": "IF..........���.JP........�.jumb....jumdc2pa....�..�.8�q.c2pa...�Yjumb...Gjumdc2ma.."
      },
      {
        "marker": "c2pa",
        "offset": 65,
        "context": "P........�.jumb....jumdc2pa....�..�.8�q.c2pa...�Yjumb...Gjumdc2ma....�..�.8�q.urn:uu"
      },
      {
        "marker": "c2pa",
        "offset": 182,
        "context": "f7d372...�ujumb...)jumdc2as....�..�.8�q.c2pa.assertions...�9jumb...Kjumd@�.2��H��.*�"
      },
      {
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        "offset": 231,
        "context": "rtions...�9jumb...Kjumd@�.2��H��.*��.Ci.c2pa.thumbnail.claim.jpeg.....c2shQ����U:���"
      },
      {
        "marker": "c2pa",
        "offset": 113204,
        "context": "..��.��...`jumb...)jumdcbor....�..�.8�q.c2pa.actions.v2..../cbor�gactions��factionlc"
      },
      {
        "marker": "c2pa",
        "offset": 113247,
        "context": "a.actions.v2..../cbor�gactions��factionlc2pa.createdmsoftwareAgentmAdobe Fireflyjpar"
      },
      {
        "marker": "trainedAlgorithmicMedia",
        "offset": 113480,
        "context": "cv.iptc.org/newscodes/digitalsourcetype/trainedAlgorithmicMediarallActionsIncluded�...�jumb...(j"
      },
      {
        "marker": "c2pa",
        "offset": 113556,
        "context": "cluded�...�jumb...(jumdcbor....�..�.8�q.c2pa.hash.data....{cbor�jexclusions��estart."
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        "offset": 113727,
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      },
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        "offset": 113836,
        "context": "fo��dnamemAdobe_Fireflyworg.contentauth.c2pa_rsf0.65.0�isignaturexMself#jumbf=/c2pa/"
      },
      {
        "marker": "c2pa",
        "offset": 113875,
        "context": ".c2pa_rsf0.65.0�isignaturexMself#jumbf=/c2pa/urn:uuid:828b19c8-a70e-4a3f-84df-763967"
      },
      {
        "marker": "c2pa",
        "offset": 113926,
        "context": "id:828b19c8-a70e-4a3f-84df-763967f7d372/c2pa.signaturejassertions��curlx4self#jumbf="
      },
      {
        "marker": "c2pa",
        "offset": 113970,
        "context": ".signaturejassertions��curlx4self#jumbf=c2pa.assertions/c2pa.thumbnail.claim.jpegdha"
      },
      {
        "marker": "c2pa",
        "offset": 113986,
        "context": "tions��curlx4self#jumbf=c2pa.assertions/c2pa.thumbnail.claim.jpegdhashX ���.�lc�{�|�"
      },
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        "marker": "c2pa",
        "offset": 114068,
        "context": "|����_�3�zw;�� �ɢ=�^.�curlx*self#jumbf=c2pa.assertions/c2pa.actions.v2dhashX t.ja�7"
      },
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        "marker": "c2pa",
        "offset": 114084,
        "context": "ɢ=�^.�curlx*self#jumbf=c2pa.assertions/c2pa.actions.v2dhashX t.ja�7GT0rq��.�.�5..1"
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      {
        "marker": "c2pa",
        "offset": 114156,
        "context": "q��.�.�5..1z�A�.$�.�V�curlx)self#jumbf=c2pa.assertions/c2pa.hash.datadhashX e8�ᷦP"
      },
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        "marker": "c2pa",
        "offset": 114172,
        "context": ".$�.�V�curlx)self#jumbf=c2pa.assertions/c2pa.hash.datadhashX e8�ᷦP>.e�J.����9.�.a."
      },
      {
        "marker": "xmp",
        "offset": 114259,
        "context": "�ix�1 idc:formatjimage/jpegjinstanceIDx,xmp:iid:93a99d27-2472-4d38-8c6c-f0d3a581788"
      },
      {
        "marker": "c2pa",
        "offset": 114372,
        "context": "fsha256..0.jumb...(jumdc2cs....�..�.8�q.c2pa.signature.../�cbor҄Y..�.8$.!�Y.�0�.�0�"
      },
      {
        "marker": "C2PA",
        "offset": 114639,
        "context": "61007164028Z0��1.0...U....Adobe Firefly C2PA1(0&..U....Content Authenticity Initiati"
      }
    ],
    "status": "Detected"
  },
  "c2pa_verification_status": "verifier_error_marker_detected",
  "c2pa_verification": {
    "presence": "manifest_present",
    "manifest_status": "well_formed",
    "signature_status": "valid",
    "trust_status": "untrusted",
    "asset_binding_status": "valid",
    "ingredient_status": "absent",
    "signer": "Adobe Inc.",
    "claim_generator": "Adobe_Firefly",
    "validation_errors": [],
    "validation_warnings": [
      "signingCredential.untrusted",
      "timeStamp.validated",
      "timeStamp.trusted",
      "claimSignature.insideValidity",
      "claimSignature.validated",
      "assertion.hashedURI.match",
      "assertion.hashedURI.match",
      "assertion.hashedURI.match",
      "assertion.dataHash.match",
      "signingCredential.untrusted"
    ],
    "verifier_name": "c2patool",
    "verifier_version": "c2patool 0.26.67",
    "legacy_status": "verifier_error_marker_detected",
    "detail": "{\n  \"active_manifest\": \"urn:uuid:828b19c8-a70e-4a3f-84df-763967f7d372\",\n  \"manifests\": {\n    \"urn:uuid:828b19c8-a70e-4a3f-84df-763967f7d372\": {\n      \"claim_generator\": \"Adobe_Firefly\",\n      \"claim_generator_info\": [\n        {\n          \"name\": \"Adobe_Firefly\",\n          \"org.contentauth.c2pa_rs\": \"0.65.0\"\n        }\n      ],\n      \"title\": \"Generated image\",\n      \"format\": \"image/jpeg\",\n      \"instance_id\": \"xmp:iid:93a99d27-2472-4d38-8c6c-f0d3a5817881\",\n      \"thumbnail\": {\n        \"format\": "
  },
  "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": 5.765625,
    "jpeg_chroma_quant_mean": 8.71875,
    "residual_noise_score": 0.005875344242895944,
    "cfa_grid_score": 3.1581371697988144e-07,
    "formation_score": 0.2220339225958716,
    "camera_score": 0.17220339225958714,
    "evidence_label": "camera_like_jpeg",
    "status": "Supportive Only"
  },
  "frequency_evidence": {
    "status": "Below Reference Threshold",
    "score_name": "composite_score",
    "score": 0.6714100226055274,
    "reference_threshold": 0.7418555425813717,
    "features": {
      "fft_grid_score": 1.5491850451897604,
      "fft_peak_score": 1.6531803251429675,
      "fft_high_energy_ratio": 0.5779230830357619,
      "dct_mid_high_ratio": 0.19262678187818483,
      "dwt_hh_energy": 0.026556931233732973,
      "composite_score": 0.6714100226055274
    },
    "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.",
    "The signature may be intact, but the signer is not trusted by the configured trust policy."
  ],
  "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."
  ]
}