CalvinBackup/remove-ai-watermarks
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feat(metadata): read EXIF Make tag; collect Ideogram/Recraft/Krea-FLUX

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Collected live samples from three popular generators we lacked:

- Ideogram tags its downloads with EXIF Make="Ideogram AI" (no C2PA, no
  SynthID, no imwatermark) -- the Make tag is its only signal. exif_generator
  only read Software/Artist/ImageDescription, so it missed this; now reads
  Make too. Real cameras put "Apple"/"Canon" in Make (no AI token), so this
  stays low-false-positive. 4 originals ingested.
- Recraft (PNG export) and Krea hosting FLUX 2: downloads carry NO detectable
  signal -- no C2PA/EXIF/IPTC, and notably no imwatermark despite Krea running
  FLUX. identify correctly reports 'unknown'. Both ingested as neg fixtures.

Lesson recorded in CLAUDE.md: the imwatermark detector fires only on pristine
output from a pipeline that runs the encoder (diffusers default, official BFL),
not from re-hosts (Krea/Stability) or re-encoded exports (Recraft/Canva).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
test-user
2026-05-24 18:38:56 -07:00
parent ad3b8ee248
commit ede35a3db5
4 changed files with 33 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
data/synthid_corpus/manifest.csv
+6
View File
@@ -110,3 +110,9 @@ f3ebe4683fc40aa2a0b80cc3ced3dc8062385ae32b488f4b33cb2330949e658d,f3ebe468-leonar
12775f4c0aec1ecd615e88c4941a788a053d0258d08d31ad34d330d3e21969bd,12775f4c-grok_original.jpg,neg,Grok (xAI),aurora,784,1168,jpeg,,,none,2026-05-24T22:47:46Z,full-res original via Download button; xAI non-adopter; NO C2PA/IPTC/SynthID (has benign EXIF block)
74b605deb102d74443a182f70fbea34a6a470bed381d62ae0bfa0083a6ecc5a3,74b605de-_e1f7984d-98e7-4cdc-91d2-f72314a4bc56.jpeg,neg,Bing Image Creator,MAI-Image-2e,1024,1024,jpeg,,,c2pa-metadata,2026-05-25T00:10:28Z,C2PA issuer Microsoft; non-SynthID; issuer-coverage fixture
f9bb6b1039ee228221d2eead7daebd46422a36a4a8959a74fa0198e1aa19f9b8,f9bb6b10-a_red_ceramic_coffee_mug_on_a_wooden_table_soft_morning_light_photorealistic_20260525000725_04.png,neg,Stability Brand Studio,Stable Image,1024,1024,png,Stability AI,,c2pa-metadata,2026-05-25T00:10:31Z,C2PA issuer Stability AI; non-SynthID; no imwatermark
23a06e0067930a9ad09a803f634414eb8ca0234fc0bbaca8d33f138745175e2e,23a06e00-a-red-ceramic-coffee-mug-on-a-wooden-table--soft-m.png,neg,Recraft V4.1,recraft-v4,896,1152,png,,,none,2026-05-25T01:21:35Z,"PNG export, no C2PA/EXIF/IPTC/imwatermark; clean download"
4f3fea84c24fda8d72a6e7bfbae31827348d9edc755ec9a5e8c835860130de57,4f3fea84-a_red_ceramic_coffee_mug_on_a_wooden_table_soft_morning_light_photorealistic_67qgxtyin9kjk5yb5mph_0.png,neg,Krea (FLUX 2 host),flux-2-dev via Krea,832,1248,png,,,none,2026-05-25T01:21:38Z,no imwatermark despite FLUX; Krea host strips/omits; clean download
7bdff2c3131cdc21783282a8a95c88f4b14ad38494a1041d0d68691af7fa5cd8,7bdff2c3-0001_1_a-red-ceramic-coffee-mug-sits-on-weather_D3BRZfOyUwuh5Emjtu8v4g_F7yI1GFGTayDA1NAUmkraw_cover.jpeg,neg,Ideogram,ideogram-3,1024,1024,jpeg,,,none,2026-05-25T01:36:38Z,EXIF Make='Ideogram AI'; no C2PA/SynthID; caught via exif_generator
ca2162624607b8f030c63cb1371d6afdd3f0d7af3d9b17514f7ae64a2e8f378c,ca216262-0001_2_a-red-ceramic-coffee-mug-sits-on-weather_rs0Lt1beXV-Mwjs33vWKVw_F7yI1GFGTayDA1NAUmkraw.jpeg,neg,Ideogram,ideogram-3,1024,1024,jpeg,,,none,2026-05-25T01:36:38Z,EXIF Make='Ideogram AI'; no C2PA/SynthID; caught via exif_generator
8a90f2ddf83ceedd7944531d27248191c79dc321ec76ea1f36df6cff9f6b8916,8a90f2dd-0001_3_a-red-ceramic-coffee-mug-sits-on-weather_Lm96lBwcXsmdeCfCpm52vw_F7yI1GFGTayDA1NAUmkraw.jpeg,neg,Ideogram,ideogram-3,1024,1024,jpeg,,,none,2026-05-25T01:36:38Z,EXIF Make='Ideogram AI'; no C2PA/SynthID; caught via exif_generator
87fca198d5c436b27a16685972802a2ff0a310a941248c9ec8d81560d7f387a1,87fca198-0001_4_a-red-ceramic-coffee-mug-sits-on-weather_pGmlgcH4XqSaq41hc0a9AQ_F7yI1GFGTayDA1NAUmkraw.jpeg,neg,Ideogram,ideogram-3,1024,1024,jpeg,,,none,2026-05-25T01:36:38Z,EXIF Make='Ideogram AI'; no C2PA/SynthID; caught via exif_generator
1 sha256 filename label source model width height format c2pa_issuer synthid_metadata verified_via added notes
110 12775f4c0aec1ecd615e88c4941a788a053d0258d08d31ad34d330d3e21969bd 12775f4c-grok_original.jpg neg Grok (xAI) aurora 784 1168 jpeg none 2026-05-24T22:47:46Z full-res original via Download button; xAI non-adopter; NO C2PA/IPTC/SynthID (has benign EXIF block)
111 74b605deb102d74443a182f70fbea34a6a470bed381d62ae0bfa0083a6ecc5a3 74b605de-_e1f7984d-98e7-4cdc-91d2-f72314a4bc56.jpeg neg Bing Image Creator MAI-Image-2e 1024 1024 jpeg c2pa-metadata 2026-05-25T00:10:28Z C2PA issuer Microsoft; non-SynthID; issuer-coverage fixture
112 f9bb6b1039ee228221d2eead7daebd46422a36a4a8959a74fa0198e1aa19f9b8 f9bb6b10-a_red_ceramic_coffee_mug_on_a_wooden_table_soft_morning_light_photorealistic_20260525000725_04.png neg Stability Brand Studio Stable Image 1024 1024 png Stability AI c2pa-metadata 2026-05-25T00:10:31Z C2PA issuer Stability AI; non-SynthID; no imwatermark
113 23a06e0067930a9ad09a803f634414eb8ca0234fc0bbaca8d33f138745175e2e 23a06e00-a-red-ceramic-coffee-mug-on-a-wooden-table--soft-m.png neg Recraft V4.1 recraft-v4 896 1152 png none 2026-05-25T01:21:35Z PNG export, no C2PA/EXIF/IPTC/imwatermark; clean download
114 4f3fea84c24fda8d72a6e7bfbae31827348d9edc755ec9a5e8c835860130de57 4f3fea84-a_red_ceramic_coffee_mug_on_a_wooden_table_soft_morning_light_photorealistic_67qgxtyin9kjk5yb5mph_0.png neg Krea (FLUX 2 host) flux-2-dev via Krea 832 1248 png none 2026-05-25T01:21:38Z no imwatermark despite FLUX; Krea host strips/omits; clean download
115 7bdff2c3131cdc21783282a8a95c88f4b14ad38494a1041d0d68691af7fa5cd8 7bdff2c3-0001_1_a-red-ceramic-coffee-mug-sits-on-weather_D3BRZfOyUwuh5Emjtu8v4g_F7yI1GFGTayDA1NAUmkraw_cover.jpeg neg Ideogram ideogram-3 1024 1024 jpeg none 2026-05-25T01:36:38Z EXIF Make='Ideogram AI'; no C2PA/SynthID; caught via exif_generator
116 ca2162624607b8f030c63cb1371d6afdd3f0d7af3d9b17514f7ae64a2e8f378c ca216262-0001_2_a-red-ceramic-coffee-mug-sits-on-weather_rs0Lt1beXV-Mwjs33vWKVw_F7yI1GFGTayDA1NAUmkraw.jpeg neg Ideogram ideogram-3 1024 1024 jpeg none 2026-05-25T01:36:38Z EXIF Make='Ideogram AI'; no C2PA/SynthID; caught via exif_generator
117 8a90f2ddf83ceedd7944531d27248191c79dc321ec76ea1f36df6cff9f6b8916 8a90f2dd-0001_3_a-red-ceramic-coffee-mug-sits-on-weather_Lm96lBwcXsmdeCfCpm52vw_F7yI1GFGTayDA1NAUmkraw.jpeg neg Ideogram ideogram-3 1024 1024 jpeg none 2026-05-25T01:36:38Z EXIF Make='Ideogram AI'; no C2PA/SynthID; caught via exif_generator
118 87fca198d5c436b27a16685972802a2ff0a310a941248c9ec8d81560d7f387a1 87fca198-0001_4_a-red-ceramic-coffee-mug-sits-on-weather_pGmlgcH4XqSaq41hc0a9AQ_F7yI1GFGTayDA1NAUmkraw.jpeg neg Ideogram ideogram-3 1024 1024 jpeg none 2026-05-25T01:36:38Z EXIF Make='Ideogram AI'; no C2PA/SynthID; caught via exif_generator