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Merge remote-tracking branch 'origin/main' into docs/arxiv-paper-review

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# Conflicts:
#	docs/installation.md
#	docs/supported-signals.md
#	docs/verification-plan.md
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Victor Kuznetsov
2026-08-28 11:18:08 -07:00
parent 27a936ecb7 01539f5f58
commit 0470849b77
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data/README.md
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fixtures/
provenance/ Real format and provenance fixtures used by tests
(source records live in fixtures/README.md)
visible/ Synthetic per-mark example gallery (one committed example per
registered visible mark; see fixtures/visible/README.md)
calibration/
<vendor>/ Minimal controlled inputs needed to rebuild detector assets
synthid/
@@ -54,16 +56,17 @@ runtime assets.
video removal profile works, so it is also the source of truth for three shipped
defaults: `tests/test_video_invisible.py` asserts that `noise_std`, `long_side`,
and `fps` together match a row this manifest records as certified. Changing one
of those three without adding the row that certifies it fails the suite. `vae` is
deliberately outside that check because neither tracked row records one; add it
to the assertion in the same commit as the first row that does.
of those three without adding the row that certifies it fails the suite. Both
historical rows mark `vae` as `unrecorded`: the repository must not infer a model
identity from the current default. Add it to the assertion in the same commit as
the first oracle row that records and verifies one.
| Column | Meaning |
| --- | --- |
| `date`, `source_url`, `source_sha256` | Identify the carrier. |
| `source_width`, `source_height`, `source_fps` | Carrier geometry. Without it the actual downscale factor of a row cannot be recovered later. |
| `duration_seconds`, `source_verdict` | Clip length submitted and the verifier's reading of the untouched carrier. |
| `vae`, `noise_std`, `long_side`, `fps`, `seed` | The full run configuration. |
| `vae`, `noise_std`, `long_side`, `fps`, `seed` | The run configuration. `unrecorded` means the historical run did not preserve the VAE identity. |
| `output_sha256` | Identifies the exact submitted file. |
| `output_verdict` | One of `detected`, `not_detected`, `indeterminate`, `refused`. |
| `output_verdict_text` | The verifier's wording, verbatim. |
data/contentseal/README.md
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# Content Seal oracle corpus
Muse Image (`muse-image-1.0`) generations with externally verified Content Seal
verdicts, produced through the Meta Model API on 2026-08-26 and checked against
the public detector at `https://meta.ai/identification` (anonymous session, no
login). Follows the `data/synthid/originals` pattern: binaries live in
`originals/`, every derived variant is recorded in `manifest.csv` as a recipe
plus hash and is not stored.
## What this corpus establishes
- The Meta Model API image endpoint (`POST /v1/images/generations`) stamps the
same Content Seal pixel watermark as the consumer Meta AI app: all five
generations verified positive with attribution "Muse Image 1 - Meta".
- The detector response carries a per-generation ID and creation timestamp
embedded in the watermark payload. Both survived a 512 px LANCZOS resize and
a full-size JPEG q85 re-encode (same ID returned), so the payload is more
robust than the detection threshold.
- Three checked center crops lost the seal: 50% and 33% linear crops of the fox
and the 50% crop of the text poster returned "No AI signatures from Meta were
found". The text poster's 33% crop was not checked because the daily oracle
limit was reached, so its empty verdict is not evidence either way. The checked
results are consistent with the Reuters 2026-07-11 analysis (55% missed after
cropping).
- API outputs carry XMP `iptcExt:DigitalSourceType =
trainedAlgorithmicMedia`, so local `identify` flags them via the existing
Made-with-AI path. Metadata-stripping transforms fall back to unknown, and
Content Seal has no local decoder in this project: the oracle is the only
reader.
- Drift finding: the 512 px resize of `gen_fox_forest` triggers a
medium-confidence false positive "Tencent Yuanbao (visible 元宝 / AI生成
mark)" in this project's `identify`. Recorded here as a reproducible case.
## Oracle limits and wire format
There is no public or documented checking API. Verified against the official
developer documentation on 2026-08-26 (`https://dev.meta.ai/docs/`): the full
Meta Model API reference lists only Responses, Chat Completions, Messages,
Files, Images (`/v1/images/generations`, `/v1/images/edits`), and Models, with
no identification, detection, or watermark endpoint, and the image-generation,
Muse Image cookbook, and pricing pages never mention watermark, Content Seal,
or provenance at all. The API applies the seal (every generation in this corpus
carries it) while documenting nothing about it. The web tool drives an internal
REST pair, captured from the browser network log on 2026-08-26:
1. `POST https://rupload.meta.ai/gen_ai_document_gen_ai_tenant/<uuid>` with the
raw file bytes, `x-entity-type`, `x-entity-length`, `ai_detector_upload: true`,
and an anonymous `authorization: OAuth ecto1:<token>` session token minted by
the page.
2. `POST https://meta.ai/api/ai-detector` with `Bearer ecto1:<token>` and body
`{"media_id": "...", "fileName": "...", "mimeType": "..."}`.
The rate limit is enforced at that endpoint, server-side, and keyed beyond the
browser session: the API itself returns `429 {"errorType": "rate_limited"}`,
and clearing cookies and storage changed nothing, so driving the internal pair
directly does not bypass it. The Meta Model API (`api.meta.ai/v1`, where the
generation key works) has no identification endpoint; plausible paths all
return 404. Rows with an empty `oracle_verdict` were transformed but not yet
checkable. Read a verdict only from the settled page text after the
result-complete state ("Upload another file"): a wait for a verdict string can
match the previous upload's text, and the fresh-navigation protocol used for
the calibration rows below is the race-free variant.
## Strength floor calibration (qwen-zimage, seed 0)
The library resolves strength per vendor with measured floors (OpenAI
0.07675 / Google 0.27 / Microsoft InvisMark 0.15 in
`_internal/watermark_profiles.py`). Meta Content Seal had no floor before this
calibration; these rows measure one by the same methodology: independent
generations, each one's first-clean boundary, floor = worst boundary plus the
observed cross-source spread.
Measured (2026-08-26/27, oracle `meta.ai/identification`):
- Default pipeline clears Content Seal: tested samples came back clean at the
default resolution-adaptive strength (~0.1305 at 2.56 MP), including the
worst source.
- Five independent generations bracketed. First-clean boundaries:
lighthouse (0.0525, 0.06], fox (0.03, 0.0375], night_city (0.03, 0.0375],
mug <= 0.03, text <= 0.015. Cross-source spread is wide (a factor of four
between easiest and hardest).
- Derived Meta floor by the existing worst-boundary-plus-cross-source-spread
method: 0.06 + (0.0525 - 0.015) = 0.0975, rounded to **0.1**.
- Shipped as `QWEN_ZIMAGE_META_STRENGTH`: auto mode routes standalone-AI-IPTC
files onto the cohort, and `--vendor meta` / `InvisibleOptions.vendor`
names it explicitly on stripped files (implying the scrub runs).
## Regeneration
The eight deterministic crop, resize, and JPEG variants can be reproduced and
hash-checked from the tracked originals:
```bash
uv run python scripts/contentseal_transforms.py /tmp/contentseal-derived
```
The Meta API generations and remote GPU outputs are not reproducible from this
repository alone. Their prompts, exact output hashes, model/profile settings,
and oracle results are recorded in `manifest.csv`, but the generation API is
stochastic and the private worker environment is not tracked. `MUSE_API_KEY` and
the anonymous detector session are deliberately absent. A new calibration must
therefore create new manifest rows rather than claiming to recreate these bytes.
data/contentseal/manifest.csv
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name,file,origin,source_url,prompt,requested_size,delivered_size,sha256,xmp_iptc_trainedAlgorithmicMedia,oracle_verdict,oracle_attribution,oracle_generation_id,oracle_created_utc,checked_at_utc,notes
gen_fox_forest,originals/gen_fox_forest.webp,meta-model-api,,A red fox resting on a mossy log in a misty forest at dawn photorealistic shallow depth of field,1024x1024,1600x1600,6d7cecf322a5ac4b2547e2f32c767b3cb3e8a0e49f274cfd00aa31be6697eed4,yes,detected,Muse Image 1 - Meta,AXZpZGVvc2VhbHY0X2NhX3NjbLlNjYhvPAxD,2026-08-26T19:07Z,2026-08-26T19:11Z,checked twice; ID stable across uploads
gen_text_poster,originals/gen_text_poster.webp,meta-model-api,,A cheerful flat-design poster that says 'WATERMARK FIELD DAY 2026' in bold rounded letters over a coral and cream striped background,1024x1024,1600x1600,873927662d8198e9c38b4ae71a2919ba5d417dfcd714649db1b0ae231e8cbf9b,yes,detected,Muse Image 1 - Meta,AXZpZGVvc2VhbHY0X2NhX3NjbJuIKXPAYxsd,2026-08-26T19:08Z,2026-08-26T19:08Z,
gen_lighthouse_watercolor,originals/gen_lighthouse_watercolor.webp,meta-model-api,,A watercolor illustration of a lighthouse on a cliff at golden hour seagulls in the distance soft loose washes white paper texture,1024x1024,1600x1600,69bee7c376608568361085602c5c7406900885849bd94c5279c3924cf793b27c,yes,detected,Muse Image 1 - Meta,AXZpZGVvc2VhbHY0X2NhX3NjbB5uWbAmWmwp,2026-08-26T19:08Z,2026-08-26T19:08Z,
gen_night_city,originals/gen_night_city.webp,meta-model-api,,A night city skyline in the rain neon reflections on wet asphalt cinematic wide shot moody,1536x1024,1920x1280,345adf6b9f777b15ef7ce7bbdfb3b355a1d9e882740809e966e9f6caafd94d48,yes,detected,Muse Image 1 - Meta,AXZpZGVvc2VhbHY0X2NhX3NjbH5uWbAmWmwp,2026-08-26T19:08Z,2026-08-26T19:08Z,
gen_studio_mug,originals/gen_studio_mug.webp,meta-model-api,,A minimalist studio photo of a single matte ceramic mug on a pastel blue background soft shadow clean commercial look,1024x1024,1600x1600,2b7bc7fd56fa2250c66ef74f8b3e49d9666fe147d894d5baf9461b5e36077a07,yes,detected,Muse Image 1 - Meta,AXZpZGVvc2VhbHY0X2NhX3NjbAsSozV2XCzw,2026-08-26T19:08Z,2026-08-26T19:08Z,
fox_crop50,,derived:gen_fox_forest,,center crop 0.5 linear each side then WEBP q95,,800x800,80b91995560a7c4b08596a26b3401a29afb82691fad193502697a49785eab7be,no_stripped_by_reencode,not_detected,,,,2026-08-26T19:13Z,seal lost; PIL re-encode strips XMP
fox_crop33,,derived:gen_fox_forest,,center crop 0.33 linear each side then WEBP q95,,528x528,3b3aded8f4fcb98d0599431abccb73b9581854ae34c6bc869724cd5c86a1e35e,no_stripped_by_reencode,not_detected,,,,2026-08-26T19:13Z,seal lost
fox_res512,,derived:gen_fox_forest,,resize long side 512 LANCZOS then WEBP q95,,512x512,19b85f615d56f5e9f55cd97bae0ee343f4f432e6bfa0a6fc7acb07dec2cc1d81,no_stripped_by_reencode,detected,Muse Image 1 - Meta,AXZpZGVvc2VhbHY0X2NhX3NjbLlNjYhvPAxD,2026-08-26T19:07Z,2026-08-26T19:13Z,generation ID and creation time identical to the original generation: watermark payload survives the resize
fox_jpeg85,,derived:gen_fox_forest,,full-size JPEG q85 re-encode,,1600x1600,3bc7dc11bf3c16c83814df1e6485cdb6e49e21141511dda56d210cc920a8c5e3,no_stripped_by_reencode,detected,Muse Image 1 - Meta,AXZpZGVvc2VhbHY0X2NhX3NjbLlNjYhvPAxD,2026-08-26T19:07Z,2026-08-26T19:13Z,payload survives JPEG recompression; local identify returns unknown (metadata stripped)
text_crop50,,derived:gen_text_poster,,center crop 0.5 linear each side then WEBP q95,,800x800,3f0d4075012ee4fec820209c5c1c32bb739998813325f49b1124f379162f9837,no_stripped_by_reencode,not_detected,,,,2026-08-26T19:13Z,seal lost
text_crop33,,derived:gen_text_poster,,center crop 0.33 linear each side then WEBP q95,,528x528,95cef87002961831b21f6f47cd9a0824a67e2ee6f8503356fd5db6a3fcfcc998,no_stripped_by_reencode,,,,,,daily oracle limit reached before this row could be checked
text_res512,,derived:gen_text_poster,,resize long side 512 LANCZOS then WEBP q95,,512x512,b319727d02e908f22e59f148050e6b4686cbd1a622bd69db51fe4072a6f66b34,no_stripped_by_reencode,,,,,,daily oracle limit reached; also the fox twin of this transform triggered the Yuanbao false positive below
text_jpeg85,,derived:gen_text_poster,,full-size JPEG q85 re-encode,,1600x1600,76f00fcde1e974549afa5d90e1879c705e3c3631ef1f35cab901fc912cd15fa4,no_stripped_by_reencode,,,,,,daily oracle limit reached before this row could be checked
blog_qr_manhwa,,meta-blog-cdn,https://lookaside.fbsbx.com/elementpath/media/?media_id=1807972953501959&version=1783318590&transcode_extension=webp,,,1920x1280,8ee7700dff59f21d7de393a619664a0b9360f148d18df289364ecea939b3dea9,yes,detected,Muse Image 1 - Meta,,,2026-08-26T18:59Z,not stored; re-downloadable from source_url
blog_fractal_poster,,meta-blog-cdn,https://lookaside.fbsbx.com/elementpath/media/?media_id=1499727434782014&version=1783727678&transcode_extension=webp,,,2096x992,2a96168db026444b47ac37807fd99a88c8b7fa6866e1c93a54ab427fbe581f76,no,detected,Muse Image 1 - Meta,,,2026-08-26T18:59Z,seal survived CDN transcode without any metadata
blog_flipbook_punch,,meta-blog-cdn,https://lookaside.fbsbx.com/elementpath/media/?media_id=2521328538303639&version=1783396590&transcode_extension=webp,,,1920x1280,35f28dc2cbdf44aed190bc8efaa0fe7bfa288a2196638712dd83bc941cc294d5,yes,detected,Muse Image 1 - Meta,,,2026-08-26T19:00Z,
blog_teen_cat,,meta-blog-cdn,https://lookaside.fbsbx.com/elementpath/media/?media_id=1325391919706734&version=1783319609&transcode_extension=webp,,,1600x1600,c2e7df000ffa6520589d8efc5f0bcbeb759175cdaa0c827189c28a64f75d3dd7,yes,detected,Muse Image 1 - Meta,,,2026-08-26T19:00Z,
blog_hero_1,,meta-blog-cdn,https://lookaside.fbsbx.com/elementpath/media/?media_id=2140990336800598&version=1783727678,,,1344x1792,7655639acb9f826cdb864d869530153efc1e1467ff414b5a63e80aa7b39b2fb7,no,detected,Muse Image 1 - Meta,,,2026-08-26T19:00Z,seal survived CDN transcode without any metadata
control_synth_gradient,,synthetic-local,,PIL gradient with rectangle JPEG q90; never touched any AI pipeline,,1024x768,25f29c0b993ed1a8e41060ed50de778d875a6d94847ced180aafc5a6ad429f82,no,not_detected,,,,2026-08-26T19:01Z,negative control: No AI signatures from Meta were found
fox_nometa,,derived:gen_fox_forest,,metadata --remove only (no pixel change),,1600x1600,685d3a5c5d74e653ec7615fc7a347a0584c277fc7fb59594d388ac619ffe3985,no_stripped,detected,Muse Image 1 - Meta,AXZpZGVvc2VhbHY0X2NhX3NjbLlNjYhvPAxD,2026-08-26T19:07Z,2026-08-26T22:19Z,metadata stripping does NOT remove Content Seal; seal lives in pixels; same generation ID as original
fox_modal_invisible,,derived:gen_fox_forest,,modal raiw-worker qwen-zimage mode=invisible seed=0 strength=default-adaptive(approx 0.1305 at 1600x1600),,1600x1600,6daa3e9b5dde5cb443d8071c5294262742f001c02b694243764a50345769d8b8,no_stripped,not_detected,,,,2026-08-26T22:21Z,current default pipeline clears Content Seal
text_modal_invisible,,derived:gen_text_poster,,modal raiw-worker qwen-zimage mode=invisible seed=0 strength=default-adaptive(approx 0.1305 at 1600x1600),,1600x1600,8530a82fb856b0a00651076ac1ad8a7544b5d8873cac9bd5780704fbe10f53f8,no_stripped,not_detected,,,,2026-08-26T22:22Z,current default pipeline clears Content Seal
fox_str0.06000,,derived:gen_fox_forest,,modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.06,,1600x1600,7b5e5ae75ca20f2a3cdfcfa7666104752d9557b08ac236db6f1548434940a1f3,no_stripped,not_detected,,,,2026-08-26T22:28Z,strength calibration ladder
fox_str0.04500,,derived:gen_fox_forest,,modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.045,,1600x1600,26da15694b3096e2f1717154db213e814cdd27f2fc40e5f924db2324213cf960,no_stripped,not_detected,,,,2026-08-27T02:28Z,strength calibration ladder; re-confirmed clean at 0.045
fox_str0.03750,,derived:gen_fox_forest,,modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.0375,,1600x1600,b7eb0616d10042933edf22cfc30aff4df915384828289b409f6cfa4cdf2807d4,no_stripped,not_detected,,,,2026-08-26T22:30Z,fresh-page protocol; fox first-clean boundary is in (0.03 0.0375]
fox_str0.03000,,derived:gen_fox_forest,,modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.03,,1600x1600,cff80d18d9d00000f47e0f97c419a37c13a13831795768aee8727aa9516d1401,no_stripped,detected,Muse Image 1 - Meta,,,2026-08-26T22:31Z,fresh-page protocol; seal survives 0.03
fox_str0.02000,,derived:gen_fox_forest,,modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.02,,1600x1600,b19183ec60b63a5b73d3e1c723e7943584912857d51a4b5f85259c5c77da0e53,no_stripped,detected,Muse Image 1 - Meta,,,2026-08-26T22:28Z,settled-read protocol; monotonic below the 0.03 boundary
text_str0.03750,,derived:gen_text_poster,,modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.0375,,1600x1600,bacfd4eca7b13616502f74497cbe4f02ef6893918870f13f9e76fdb93b43107f,no_stripped,not_detected,,,,2026-08-26T22:33Z,fresh-page protocol
text_str0.03000,,derived:gen_text_poster,,modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.03,,1600x1600,d5c6cffbf471ef8bb74ee8c0d22cc17d9da2c446b83e46c4be67e6ea4cdd09de,no_stripped,not_detected,,,,2026-08-26T22:33Z,fresh-page protocol; text first-clean boundary is at or below 0.03 - cross-source spread vs fox confirmed
lh_str0.03750,,derived:gen_lighthouse_watercolor,,modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.0375,,1600x1600,f5169debc5fd2792399c0ea3fa88cb1d05f523d95004bec240c73db0e9aaee51,no_stripped,detected,Muse Image 1 - Meta,,,2026-08-27T02:28Z,seal survives 0.0375 where fox is already clean
lh_str0.03000,,derived:gen_lighthouse_watercolor,,modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.03,,1600x1600,110d2112d91dd53df5ccd1839e0e2b41c44aa1832adb0090032660e071fb1fd4,no_stripped,detected,Muse Image 1 - Meta,,,2026-08-27T02:28Z,fresh-page protocol; lighthouse holds its seal below the fox boundary: cross-source spread is wide
text_str0.02500,,derived:gen_text_poster,,modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.025,,1600x1600,f46a6c53b4f3d39fccb1d62cca82ced2e163e4424d13c98e6468a8e083c0fa54,no_stripped,not_detected,,,,2026-08-27T02:28Z,mid rung inside the clean zone
text_str0.02000,,derived:gen_text_poster,,modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.02,,1600x1600,a19cbe22313e0f19768c98567ea89f2d9dc30827691fc7ec2971c52f3e7c6cc6,no_stripped,not_detected,,,,2026-08-27T02:28Z,text clean at 0.02: boundary <= 0.02 - the easiest source measured
text_str0.01500,,derived:gen_text_poster,,modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.015,,1600x1600,aa3816c75e38f3ab5afc378d349caafad56f2bb6da859a5ee68fdea57ad00d73,no_stripped,not_detected,,,,2026-08-27T02:41Z,text clean at 0.015: boundary <= 0.015 - the easiest source measured
lh_str0.02500,,derived:gen_lighthouse_watercolor,,modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.025,,1600x1600,989c4a7a804bc8420ec4d86b9445bc3a37382c1834782a7f8842f781d69b05e2,no_stripped,,,,,,below the measured detected boundary (0.03) for this source; not individually checked
lh_str0.02000,,derived:gen_lighthouse_watercolor,,modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.02,,1600x1600,6a4a4ec94292a145e7d73e6900b8ec6d0eede17137f2b91fba7757ec0bdba5ec,no_stripped,,,,,,below the measured detected boundary (0.03) for this source; not individually checked
nc_str0.03750,,derived:gen_night_city,,modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.0375,,1920x1280,46f322335f801ee54427eb39275216465f9a7cfa3d918c698e4d90a2439a0815,no_stripped,not_detected,,,,2026-08-27T02:28Z,boundary (0.03; 0.0375]
nc_str0.03000,,derived:gen_night_city,,modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.03,,1920x1280,3f42632319248ad1a91ef2457c7e0b13ed17e1d2569decbbaab67c2072e9a305,no_stripped,detected,Muse Image 1 - Meta,,,2026-08-27T02:28Z,night_city holds seal at 0.03
mug_str0.03750,,derived:gen_studio_mug,,modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.0375,,1600x1600,3b6109ae7e86b8ea74ce33315e3f2a7eda1cadb724d429f0951f13c3ead34b0f,no_stripped,not_detected,,,,2026-08-27T02:28Z,upper rung for the mug bracket
mug_str0.03000,,derived:gen_studio_mug,,modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.03,,1600x1600,1c24c984677e1528da83003ac40594f6e5ef1fa9351f1368b6d31a0101308583,no_stripped,not_detected,,,,2026-08-27T02:28Z,mug clean at 0.03: boundary <= 0.03
lh_str0.05250,,derived:gen_lighthouse_watercolor,,modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.0525,,1600x1600,8912ba1ff4a26790f69224c49dd649e46835e277c375276ac9604f5339775b2a,no_stripped,detected,Muse Image 1 - Meta,,,2026-08-27T02:41Z,bisection: lighthouse first-clean boundary bracketed to (0.0525; 0.06]
lh_str0.04500,,derived:gen_lighthouse_watercolor,,modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.045,,1600x1600,cfdcf7bbb27c740846a1de4edffee3b25a624c2a8e1aba2362feaa25b682e3ae,no_stripped,detected,Muse Image 1 - Meta,,,2026-08-27T02:28Z,seal survives 0.045: lighthouse is the worst source measured
lh_str0.06000,,derived:gen_lighthouse_watercolor,,modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.06,,1600x1600,4e214be00a89dc9f1f32ec39483c5e9668a1ec7f38b15e5794942479c839fcca,no_stripped,not_detected,,,,2026-08-27T02:28Z,lighthouse first-clean boundary bracketed to (0.045 0.06]
1 name file origin source_url prompt requested_size delivered_size sha256 xmp_iptc_trainedAlgorithmicMedia oracle_verdict oracle_attribution oracle_generation_id oracle_created_utc checked_at_utc notes
2 gen_fox_forest originals/gen_fox_forest.webp meta-model-api A red fox resting on a mossy log in a misty forest at dawn photorealistic shallow depth of field 1024x1024 1600x1600 6d7cecf322a5ac4b2547e2f32c767b3cb3e8a0e49f274cfd00aa31be6697eed4 yes detected Muse Image 1 - Meta AXZpZGVvc2VhbHY0X2NhX3NjbLlNjYhvPAxD 2026-08-26T19:07Z 2026-08-26T19:11Z checked twice; ID stable across uploads
3 gen_text_poster originals/gen_text_poster.webp meta-model-api A cheerful flat-design poster that says 'WATERMARK FIELD DAY 2026' in bold rounded letters over a coral and cream striped background 1024x1024 1600x1600 873927662d8198e9c38b4ae71a2919ba5d417dfcd714649db1b0ae231e8cbf9b yes detected Muse Image 1 - Meta AXZpZGVvc2VhbHY0X2NhX3NjbJuIKXPAYxsd 2026-08-26T19:08Z 2026-08-26T19:08Z
4 gen_lighthouse_watercolor originals/gen_lighthouse_watercolor.webp meta-model-api A watercolor illustration of a lighthouse on a cliff at golden hour seagulls in the distance soft loose washes white paper texture 1024x1024 1600x1600 69bee7c376608568361085602c5c7406900885849bd94c5279c3924cf793b27c yes detected Muse Image 1 - Meta AXZpZGVvc2VhbHY0X2NhX3NjbB5uWbAmWmwp 2026-08-26T19:08Z 2026-08-26T19:08Z
5 gen_night_city originals/gen_night_city.webp meta-model-api A night city skyline in the rain neon reflections on wet asphalt cinematic wide shot moody 1536x1024 1920x1280 345adf6b9f777b15ef7ce7bbdfb3b355a1d9e882740809e966e9f6caafd94d48 yes detected Muse Image 1 - Meta AXZpZGVvc2VhbHY0X2NhX3NjbH5uWbAmWmwp 2026-08-26T19:08Z 2026-08-26T19:08Z
6 gen_studio_mug originals/gen_studio_mug.webp meta-model-api A minimalist studio photo of a single matte ceramic mug on a pastel blue background soft shadow clean commercial look 1024x1024 1600x1600 2b7bc7fd56fa2250c66ef74f8b3e49d9666fe147d894d5baf9461b5e36077a07 yes detected Muse Image 1 - Meta AXZpZGVvc2VhbHY0X2NhX3NjbAsSozV2XCzw 2026-08-26T19:08Z 2026-08-26T19:08Z
7 fox_crop50 derived:gen_fox_forest center crop 0.5 linear each side then WEBP q95 800x800 80b91995560a7c4b08596a26b3401a29afb82691fad193502697a49785eab7be no_stripped_by_reencode not_detected 2026-08-26T19:13Z seal lost; PIL re-encode strips XMP
8 fox_crop33 derived:gen_fox_forest center crop 0.33 linear each side then WEBP q95 528x528 3b3aded8f4fcb98d0599431abccb73b9581854ae34c6bc869724cd5c86a1e35e no_stripped_by_reencode not_detected 2026-08-26T19:13Z seal lost
9 fox_res512 derived:gen_fox_forest resize long side 512 LANCZOS then WEBP q95 512x512 19b85f615d56f5e9f55cd97bae0ee343f4f432e6bfa0a6fc7acb07dec2cc1d81 no_stripped_by_reencode detected Muse Image 1 - Meta AXZpZGVvc2VhbHY0X2NhX3NjbLlNjYhvPAxD 2026-08-26T19:07Z 2026-08-26T19:13Z generation ID and creation time identical to the original generation: watermark payload survives the resize
10 fox_jpeg85 derived:gen_fox_forest full-size JPEG q85 re-encode 1600x1600 3bc7dc11bf3c16c83814df1e6485cdb6e49e21141511dda56d210cc920a8c5e3 no_stripped_by_reencode detected Muse Image 1 - Meta AXZpZGVvc2VhbHY0X2NhX3NjbLlNjYhvPAxD 2026-08-26T19:07Z 2026-08-26T19:13Z payload survives JPEG recompression; local identify returns unknown (metadata stripped)
11 text_crop50 derived:gen_text_poster center crop 0.5 linear each side then WEBP q95 800x800 3f0d4075012ee4fec820209c5c1c32bb739998813325f49b1124f379162f9837 no_stripped_by_reencode not_detected 2026-08-26T19:13Z seal lost
12 text_crop33 derived:gen_text_poster center crop 0.33 linear each side then WEBP q95 528x528 95cef87002961831b21f6f47cd9a0824a67e2ee6f8503356fd5db6a3fcfcc998 no_stripped_by_reencode daily oracle limit reached before this row could be checked
13 text_res512 derived:gen_text_poster resize long side 512 LANCZOS then WEBP q95 512x512 b319727d02e908f22e59f148050e6b4686cbd1a622bd69db51fe4072a6f66b34 no_stripped_by_reencode daily oracle limit reached; also the fox twin of this transform triggered the Yuanbao false positive below
14 text_jpeg85 derived:gen_text_poster full-size JPEG q85 re-encode 1600x1600 76f00fcde1e974549afa5d90e1879c705e3c3631ef1f35cab901fc912cd15fa4 no_stripped_by_reencode daily oracle limit reached before this row could be checked
15 blog_qr_manhwa meta-blog-cdn https://lookaside.fbsbx.com/elementpath/media/?media_id=1807972953501959&version=1783318590&transcode_extension=webp 1920x1280 8ee7700dff59f21d7de393a619664a0b9360f148d18df289364ecea939b3dea9 yes detected Muse Image 1 - Meta 2026-08-26T18:59Z not stored; re-downloadable from source_url
16 blog_fractal_poster meta-blog-cdn https://lookaside.fbsbx.com/elementpath/media/?media_id=1499727434782014&version=1783727678&transcode_extension=webp 2096x992 2a96168db026444b47ac37807fd99a88c8b7fa6866e1c93a54ab427fbe581f76 no detected Muse Image 1 - Meta 2026-08-26T18:59Z seal survived CDN transcode without any metadata
17 blog_flipbook_punch meta-blog-cdn https://lookaside.fbsbx.com/elementpath/media/?media_id=2521328538303639&version=1783396590&transcode_extension=webp 1920x1280 35f28dc2cbdf44aed190bc8efaa0fe7bfa288a2196638712dd83bc941cc294d5 yes detected Muse Image 1 - Meta 2026-08-26T19:00Z
18 blog_teen_cat meta-blog-cdn https://lookaside.fbsbx.com/elementpath/media/?media_id=1325391919706734&version=1783319609&transcode_extension=webp 1600x1600 c2e7df000ffa6520589d8efc5f0bcbeb759175cdaa0c827189c28a64f75d3dd7 yes detected Muse Image 1 - Meta 2026-08-26T19:00Z
19 blog_hero_1 meta-blog-cdn https://lookaside.fbsbx.com/elementpath/media/?media_id=2140990336800598&version=1783727678 1344x1792 7655639acb9f826cdb864d869530153efc1e1467ff414b5a63e80aa7b39b2fb7 no detected Muse Image 1 - Meta 2026-08-26T19:00Z seal survived CDN transcode without any metadata
20 control_synth_gradient synthetic-local PIL gradient with rectangle JPEG q90; never touched any AI pipeline 1024x768 25f29c0b993ed1a8e41060ed50de778d875a6d94847ced180aafc5a6ad429f82 no not_detected 2026-08-26T19:01Z negative control: No AI signatures from Meta were found
21 fox_nometa derived:gen_fox_forest metadata --remove only (no pixel change) 1600x1600 685d3a5c5d74e653ec7615fc7a347a0584c277fc7fb59594d388ac619ffe3985 no_stripped detected Muse Image 1 - Meta AXZpZGVvc2VhbHY0X2NhX3NjbLlNjYhvPAxD 2026-08-26T19:07Z 2026-08-26T22:19Z metadata stripping does NOT remove Content Seal; seal lives in pixels; same generation ID as original
22 fox_modal_invisible derived:gen_fox_forest modal raiw-worker qwen-zimage mode=invisible seed=0 strength=default-adaptive(approx 0.1305 at 1600x1600) 1600x1600 6daa3e9b5dde5cb443d8071c5294262742f001c02b694243764a50345769d8b8 no_stripped not_detected 2026-08-26T22:21Z current default pipeline clears Content Seal
23 text_modal_invisible derived:gen_text_poster modal raiw-worker qwen-zimage mode=invisible seed=0 strength=default-adaptive(approx 0.1305 at 1600x1600) 1600x1600 8530a82fb856b0a00651076ac1ad8a7544b5d8873cac9bd5780704fbe10f53f8 no_stripped not_detected 2026-08-26T22:22Z current default pipeline clears Content Seal
24 fox_str0.06000 derived:gen_fox_forest modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.06 1600x1600 7b5e5ae75ca20f2a3cdfcfa7666104752d9557b08ac236db6f1548434940a1f3 no_stripped not_detected 2026-08-26T22:28Z strength calibration ladder
25 fox_str0.04500 derived:gen_fox_forest modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.045 1600x1600 26da15694b3096e2f1717154db213e814cdd27f2fc40e5f924db2324213cf960 no_stripped not_detected 2026-08-27T02:28Z strength calibration ladder; re-confirmed clean at 0.045
26 fox_str0.03750 derived:gen_fox_forest modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.0375 1600x1600 b7eb0616d10042933edf22cfc30aff4df915384828289b409f6cfa4cdf2807d4 no_stripped not_detected 2026-08-26T22:30Z fresh-page protocol; fox first-clean boundary is in (0.03 0.0375]
27 fox_str0.03000 derived:gen_fox_forest modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.03 1600x1600 cff80d18d9d00000f47e0f97c419a37c13a13831795768aee8727aa9516d1401 no_stripped detected Muse Image 1 - Meta 2026-08-26T22:31Z fresh-page protocol; seal survives 0.03
28 fox_str0.02000 derived:gen_fox_forest modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.02 1600x1600 b19183ec60b63a5b73d3e1c723e7943584912857d51a4b5f85259c5c77da0e53 no_stripped detected Muse Image 1 - Meta 2026-08-26T22:28Z settled-read protocol; monotonic below the 0.03 boundary
29 text_str0.03750 derived:gen_text_poster modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.0375 1600x1600 bacfd4eca7b13616502f74497cbe4f02ef6893918870f13f9e76fdb93b43107f no_stripped not_detected 2026-08-26T22:33Z fresh-page protocol
30 text_str0.03000 derived:gen_text_poster modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.03 1600x1600 d5c6cffbf471ef8bb74ee8c0d22cc17d9da2c446b83e46c4be67e6ea4cdd09de no_stripped not_detected 2026-08-26T22:33Z fresh-page protocol; text first-clean boundary is at or below 0.03 - cross-source spread vs fox confirmed
31 lh_str0.03750 derived:gen_lighthouse_watercolor modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.0375 1600x1600 f5169debc5fd2792399c0ea3fa88cb1d05f523d95004bec240c73db0e9aaee51 no_stripped detected Muse Image 1 - Meta 2026-08-27T02:28Z seal survives 0.0375 where fox is already clean
32 lh_str0.03000 derived:gen_lighthouse_watercolor modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.03 1600x1600 110d2112d91dd53df5ccd1839e0e2b41c44aa1832adb0090032660e071fb1fd4 no_stripped detected Muse Image 1 - Meta 2026-08-27T02:28Z fresh-page protocol; lighthouse holds its seal below the fox boundary: cross-source spread is wide
33 text_str0.02500 derived:gen_text_poster modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.025 1600x1600 f46a6c53b4f3d39fccb1d62cca82ced2e163e4424d13c98e6468a8e083c0fa54 no_stripped not_detected 2026-08-27T02:28Z mid rung inside the clean zone
34 text_str0.02000 derived:gen_text_poster modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.02 1600x1600 a19cbe22313e0f19768c98567ea89f2d9dc30827691fc7ec2971c52f3e7c6cc6 no_stripped not_detected 2026-08-27T02:28Z text clean at 0.02: boundary <= 0.02 - the easiest source measured
35 text_str0.01500 derived:gen_text_poster modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.015 1600x1600 aa3816c75e38f3ab5afc378d349caafad56f2bb6da859a5ee68fdea57ad00d73 no_stripped not_detected 2026-08-27T02:41Z text clean at 0.015: boundary <= 0.015 - the easiest source measured
36 lh_str0.02500 derived:gen_lighthouse_watercolor modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.025 1600x1600 989c4a7a804bc8420ec4d86b9445bc3a37382c1834782a7f8842f781d69b05e2 no_stripped below the measured detected boundary (0.03) for this source; not individually checked
37 lh_str0.02000 derived:gen_lighthouse_watercolor modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.02 1600x1600 6a4a4ec94292a145e7d73e6900b8ec6d0eede17137f2b91fba7757ec0bdba5ec no_stripped below the measured detected boundary (0.03) for this source; not individually checked
38 nc_str0.03750 derived:gen_night_city modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.0375 1920x1280 46f322335f801ee54427eb39275216465f9a7cfa3d918c698e4d90a2439a0815 no_stripped not_detected 2026-08-27T02:28Z boundary (0.03; 0.0375]
39 nc_str0.03000 derived:gen_night_city modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.03 1920x1280 3f42632319248ad1a91ef2457c7e0b13ed17e1d2569decbbaab67c2072e9a305 no_stripped detected Muse Image 1 - Meta 2026-08-27T02:28Z night_city holds seal at 0.03
40 mug_str0.03750 derived:gen_studio_mug modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.0375 1600x1600 3b6109ae7e86b8ea74ce33315e3f2a7eda1cadb724d429f0951f13c3ead34b0f no_stripped not_detected 2026-08-27T02:28Z upper rung for the mug bracket
41 mug_str0.03000 derived:gen_studio_mug modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.03 1600x1600 1c24c984677e1528da83003ac40594f6e5ef1fa9351f1368b6d31a0101308583 no_stripped not_detected 2026-08-27T02:28Z mug clean at 0.03: boundary <= 0.03
42 lh_str0.05250 derived:gen_lighthouse_watercolor modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.0525 1600x1600 8912ba1ff4a26790f69224c49dd649e46835e277c375276ac9604f5339775b2a no_stripped detected Muse Image 1 - Meta 2026-08-27T02:41Z bisection: lighthouse first-clean boundary bracketed to (0.0525; 0.06]
43 lh_str0.04500 derived:gen_lighthouse_watercolor modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.045 1600x1600 cfdcf7bbb27c740846a1de4edffee3b25a624c2a8e1aba2362feaa25b682e3ae no_stripped detected Muse Image 1 - Meta 2026-08-27T02:28Z seal survives 0.045: lighthouse is the worst source measured
44 lh_str0.06000 derived:gen_lighthouse_watercolor modal raiw-worker qwen-zimage mode=invisible seed=0 strength=0.06 1600x1600 4e214be00a89dc9f1f32ec39483c5e9668a1ec7f38b15e5794942479c839fcca no_stripped not_detected 2026-08-27T02:28Z lighthouse first-clean boundary bracketed to (0.045 0.06]
data/contentseal/originals/gen_fox_forest.webp
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data/evaluations/fidelity/anytext2-restoration-2026-08-13.csv
+1 -1
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@@ -1,4 +1,4 @@
date,source_commit,fixture,variant,model,model_revision,model_sha256,ocr_route,text_cer,img_lpips,ssim,psnr_db,output_sha256,provider_oracle,notes
2026-08-13,2d03a00,Gemini_Generated_Image_633uuy633uuy633u.png,qwen-zimage,,,,"Paddle ch",0.074,0.289,0.696,23.3,4b05489c7a79f993d35d32528de792baad5a3e33ee950afa147caf5d3e0621,not_run,Exact Qwen baseline reused from text-restoration benchmark
2026-08-13,2d03a00,Gemini_Generated_Image_633uuy633uuy633u.png,qwen-zimage,,,,"Paddle ch",0.074,0.289,0.696,23.3,4b05489c7a79f993d35d32528de792baad5a3e33ee950afa147caf5d3e0621a6,not_run,Exact Qwen baseline reused from text-restoration benchmark
2026-08-13,2d03a00,Gemini_Generated_Image_633uuy633uuy633u.png,qwen-zimage-anytext2-default,AnyText2-SD1.5,b06c583a583818f3679665ef67b51363f107853c,7d5d593928d842500e0da101ab6a1ae28a8d21403441ca62c813c4f92529ace8,"Paddle ch",0.185,0.338,0.642,18.2,87729fe7e0482d2cead6d3b7c7dd386ecc75ab3d8658131c54e67528b8f9feeb,not_run,Fidelity gate failed; padded crop recognition CER 0.074 still shows two substituted characters; locally composited three-line edit; 20 DDIM steps; seed 0
2026-08-13,2d03a00,Gemini_Generated_Image_633uuy633uuy633u.png,qwen-zimage-anytext2-mimic,AnyText2-SD1.5,b06c583a583818f3679665ef67b51363f107853c,7d5d593928d842500e0da101ab6a1ae28a8d21403441ca62c813c4f92529ace8,"Paddle ch",0.222,0.345,0.644,17.9,f5198d8f2365b79880aba8ea6b0c3885142b9de21c9f7f4f6712ac4a0db8dd85,not_run,Fidelity gate failed; source glyph masks supplied as font hints; 20 DDIM steps; seed 0
1 date source_commit fixture variant model model_revision model_sha256 ocr_route text_cer img_lpips ssim psnr_db output_sha256 provider_oracle notes
2 2026-08-13 2d03a00 Gemini_Generated_Image_633uuy633uuy633u.png qwen-zimage Paddle ch 0.074 0.289 0.696 23.3 4b05489c7a79f993d35d32528de792baad5a3e33ee950afa147caf5d3e0621 4b05489c7a79f993d35d32528de792baad5a3e33ee950afa147caf5d3e0621a6 not_run Exact Qwen baseline reused from text-restoration benchmark
3 2026-08-13 2d03a00 Gemini_Generated_Image_633uuy633uuy633u.png qwen-zimage-anytext2-default AnyText2-SD1.5 b06c583a583818f3679665ef67b51363f107853c 7d5d593928d842500e0da101ab6a1ae28a8d21403441ca62c813c4f92529ace8 Paddle ch 0.185 0.338 0.642 18.2 87729fe7e0482d2cead6d3b7c7dd386ecc75ab3d8658131c54e67528b8f9feeb not_run Fidelity gate failed; padded crop recognition CER 0.074 still shows two substituted characters; locally composited three-line edit; 20 DDIM steps; seed 0
4 2026-08-13 2d03a00 Gemini_Generated_Image_633uuy633uuy633u.png qwen-zimage-anytext2-mimic AnyText2-SD1.5 b06c583a583818f3679665ef67b51363f107853c 7d5d593928d842500e0da101ab6a1ae28a8d21403441ca62c813c4f92529ace8 Paddle ch 0.222 0.345 0.644 17.9 f5198d8f2365b79880aba8ea6b0c3885142b9de21c9f7f4f6712ac4a0db8dd85 not_run Fidelity gate failed; source glyph masks supplied as font hints; 20 DDIM steps; seed 0
data/evaluations/video-synthid-oracle.csv
+2 -2
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@@ -1,3 +1,3 @@
date,source_url,source_sha256,source_width,source_height,source_fps,duration_seconds,source_verdict,vae,noise_std,long_side,fps,seed,output_sha256,output_verdict,output_verdict_text,output_detected_range,track,session_id,stratum,psnr_db,temporal_residual_ratio
2026-07-31,https://storage.googleapis.com/gdm-deepmind-com-prod-public/media/media/veo__veo-3__off-road.mp4,79a552b9406a079682440c31f14d33a10ba8e1b8b2e96425f5de70f63350299d,1920,1080,24,8,detected_all_frames,,0.10,512,12,0,079165105d4c56e1612091987c08c2627049423025f74c0d4e245fb47c2ff0e3,detected,,,,,,26.2932,1.0072
2026-07-31,https://storage.googleapis.com/gdm-deepmind-com-prod-public/media/media/veo__veo-3__off-road.mp4,79a552b9406a079682440c31f14d33a10ba8e1b8b2e96425f5de70f63350299d,1920,1080,24,8,detected_all_frames,,0.15,512,12,0,1c4046bcfdead138353b4e2a73339ba227bb5e544878d80c5bc6cd8427c7b00e,not_detected,,,,,,25.3911,1.0578
2026-07-31,https://storage.googleapis.com/gdm-deepmind-com-prod-public/media/media/veo__veo-3__off-road.mp4,79a552b9406a079682440c31f14d33a10ba8e1b8b2e96425f5de70f63350299d,1920,1080,24,8,detected_all_frames,unrecorded,0.10,512,12,0,079165105d4c56e1612091987c08c2627049423025f74c0d4e245fb47c2ff0e3,detected,,,,,,26.2932,1.0072
2026-07-31,https://storage.googleapis.com/gdm-deepmind-com-prod-public/media/media/veo__veo-3__off-road.mp4,79a552b9406a079682440c31f14d33a10ba8e1b8b2e96425f5de70f63350299d,1920,1080,24,8,detected_all_frames,unrecorded,0.15,512,12,0,1c4046bcfdead138353b4e2a73339ba227bb5e544878d80c5bc6cd8427c7b00e,not_detected,,,,,,25.3911,1.0578
1 date source_url source_sha256 source_width source_height source_fps duration_seconds source_verdict vae noise_std long_side fps seed output_sha256 output_verdict output_verdict_text output_detected_range track session_id stratum psnr_db temporal_residual_ratio
2 2026-07-31 https://storage.googleapis.com/gdm-deepmind-com-prod-public/media/media/veo__veo-3__off-road.mp4 79a552b9406a079682440c31f14d33a10ba8e1b8b2e96425f5de70f63350299d 1920 1080 24 8 detected_all_frames unrecorded 0.10 512 12 0 079165105d4c56e1612091987c08c2627049423025f74c0d4e245fb47c2ff0e3 detected 26.2932 1.0072
3 2026-07-31 https://storage.googleapis.com/gdm-deepmind-com-prod-public/media/media/veo__veo-3__off-road.mp4 79a552b9406a079682440c31f14d33a10ba8e1b8b2e96425f5de70f63350299d 1920 1080 24 8 detected_all_frames unrecorded 0.15 512 12 0 1c4046bcfdead138353b4e2a73339ba227bb5e544878d80c5bc6cd8427c7b00e not_detected 25.3911 1.0578
data/fixtures/visible/README.md
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# Visible-mark example gallery
One committed example per registered visible mark, so the repository carries a
working sample of everything it supports. `tests/test_visible_examples.py` holds
both sides to it: a mark registered without an example fails the suite, and so
does an engine that stops detecting its own example.
## What these files are
Every example is SYNTHETIC: `scripts/render_visible_examples.py` composites the
mark's committed silhouette (the same font-rendered asset the detector matches)
onto a deterministic generated base photo at the engine's measured geometry.
No user upload and no vendor asset enters the repository: corpus files under
`data/spaces/` are user content and stay out of git by policy, and the
silhouettes themselves are our own renders (`scripts/render_vendor_silhouettes.py`).
The examples demonstrate DETECTION geometry and house style, not vendor raster
fidelity; real-world variants (fonts, opacities, sizes) are covered by the
engines' calibration cohorts, which are local-only.
## Regeneration
uv run python scripts/render_visible_examples.py
The generator self-verifies: it fails (exit 1) if any registered mark does not
detect on its own example, so regeneration is the fix point for drift.
## Layout
<mark-key>/example.png 1536x2048..2048x2048 PNG, one per image mark
<mark-key>/example.mp4 960x540 90-frame clip, one per video mark
(kling carries both: it is registered in both registries)
Special cases: `gemini` composites the sparkle alpha map at the provider's
configured position; `jimeng_pill` is the capture-less pill at the measured
3:4 portrait geometry; `microsoft` is the opaque white pill with dark text
holes (the discriminator its detector keys on). Video examples composite the
detector's own synthetic template on every frame; where two marks share a
shape family the example carries the discriminative variant (`veo` the legacy
text form, `kling` the logo-plus-wordmark pair flush to the edge), because the
temporal selection resolves cross-template ties by table order.
data/fixtures/visible/baidu/example.png
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data/synthid/README.md
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@@ -163,7 +163,7 @@ sparkle; the SynthID *pixel* itself has no local detector (oracle only).
Key takeaways:
- The same model differs by *surface*: Gemini app wraps C2PA, AI Studio (API/playground) emits none -- only the pixel + sparkle survive.
- Microsoft Designer's DALL-E backend inherits OpenAI's C2PA+SynthID (issuer "OpenAI, Microsoft"); Bing now runs Microsoft's own **MAI-Image** and signs C2PA as "Microsoft" (not OpenAI/DALL-E).
- Microsoft Designer's DALL·E backend inherits OpenAI's C2PA+SynthID (issuer "OpenAI, Microsoft"); Bing now runs Microsoft's own **MAI-Image** and signs C2PA as "Microsoft" (not OpenAI/DALL·E).
- Meta uses the IPTC `digitalSourceType` marker, not C2PA or SynthID.
- The open imwatermark fires only on *pristine* output from a pipeline that runs the encoder (diffusers default, official BFL) -- not from re-hosts (Krea, Stability hosted SDXL) or re-encoded design exports (Recraft, Canva). Ideogram's only signal is the EXIF `Make` tag.
- Bing and Grok web UIs are uncooperative for autonomous capture (no document_idle for screenshots; blob downloads intermittently no-op; low-res in-chat previews). Use their native download button manually if a full-res sample is needed.