Add real watermark fixtures and expand provider coverage

data/README.md

@@ -7,8 +7,9 @@ data/
   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)
+    visible/      Per-mark example gallery: one synthetic canonical example per
+                  registered mark plus documented provider originals where available
+                  (see fixtures/visible/README.md)
   calibration/
     <vendor>/     Minimal controlled inputs needed to rebuild detector assets
   synthid/
@@ -24,6 +25,11 @@ data/
                   Reproducible full-clip Gemini SynthID verdicts
 ```
 
+[`image-watermark-examples.csv`](image-watermark-examples.csv) and
+[`video-watermark-examples.csv`](video-watermark-examples.csv) are the coverage
+indexes for real carriers. They point to each canonical binary instead of
+duplicating it and record unsupported gaps and source-specific licensing.
+
 ## Storage rules
 
 Large local-only research data (the 211 GB Spaces corpus and the frozen

data/fixtures/README.md

@@ -3,6 +3,151 @@
 These files exercise real container, metadata, and pixel-provenance formats.
 They are test inputs, not evaluation corpora.
 
+## OpenRouter metadata survey
+
+The following files are original byte streams returned by OpenRouter's Image
+API on 2026-09-02. Each request used a repository-maintainer account, the same
+neutral still-life prompt, one 1:1 output, and no image reference. The prompt
+was `A documentary photograph of three smooth river stones on pale linen beside
+a small blue glass vase, soft natural daylight, plain uncluttered background,
+no text, no logos`.
+
+| File | Model | Cost | SHA-256 | Expected metadata result |
+| --- | --- | --- | --- | --- |
+| `recraft-v3.webp` | `recraft/recraft-v3` | USD 0.04 | `e94c99ab50410092dbb601c8269ce812879e2271e18c7880021d2118666542ae` | Valid C2PA; `recraft.ai`; `trainedAlgorithmicMedia` |
+| `krea-2-medium-turbo.png` | `krea/krea-2-medium-turbo` | USD 0.015 | `ee1302c01e8da8e316e6563b0f9d36d511b9048fb2f70b8851eeeda98c5fb6a0` | No locally readable provenance |
+
+Both were paid API generations. Recraft grants ownership for paid-plan output,
+and Krea states that users own compliant outputs. They are distributed under
+the repository license.
+
+- Recraft terms: <https://www.recraft.ai/docs/plans-and-billing/commercial-rights-and-ownership>
+- Krea terms: <https://www.krea.ai/krea-2-licensing>
+
+The same survey generated `sourceful/riverflow-v2-fast` output and found no
+locally readable metadata. It is not committed because Riverflow's terms
+restrict redistribution and using results to test or improve machine-learning
+systems. Its measured SHA-256 was
+`d4d7e80a3ed450129a0e77bdf330a83eb7de1e287d5b2b737cd26a011194a270`;
+OpenRouter recorded a USD 0.02 request cost.
+
+## WaveSpeedAI metadata survey
+
+The following measurements came from original byte streams returned by the
+WaveSpeedAI API on 2026-09-03. Each request used a repository-maintainer
+account and the same neutral still-life prompt recorded above. The account
+balance moved from USD 12.00 to USD 11.82 for the four successful requests.
+
+| File | WaveSpeedAI model | SHA-256 | Expected metadata result |
+| --- | --- | --- | --- |
+| `qwen-image.png` | `wavespeed-ai/qwen-image/text-to-image` | `5b6d832834397498d0587b9b2536f88c75e923195c43c2b71d9f7f3c5422b4f1` | No provenance signal; one non-provenance PNG `job-id` text field |
+| `hunyuan-image-3.png` | `wavespeed-ai/hunyuan-image-3` | `6ae2ac073ac79b02b0934c905364f200420c2ff60fea232bd9e0a5fca785cc09` | Valid C2PA from `fal.ai` naming `fal-ai/hunyuan-image`, plus Adobe TrustMark Variant P, schema 0 |
+| `kling-image-v3.png` | `kwaivgi/kling-image-v3/text-to-image` | `501ab865b47ba59b64bc0f68118300744b0d5c7be2fa4e2ecbb3a78de5d8a82b` | TC260 PNG `AIGC` field naming producer `001191110108335469089C10100`; no visible Kling mark |
+| `seedream-v4.jpg` | `bytedance/seedream-v4` | `9ec6af1fc0509d74e264b9631a6cddd2ce7ce20146347fe418e9306032beb759` | No locally readable provenance |
+
+All four original byte streams are committed. Section 11.1 of WaveSpeedAI's
+terms assigns its rights in Customer Data, explicitly including Outputs, to the
+customer. The live catalog records used for these requests expose no additional
+license, terms URL, attribution requirement, territory restriction, or
+commercial-use restriction. The maintainer therefore distributes these paid,
+neutral-prompt outputs under the repository license. This conclusion applies
+to these WaveSpeedAI API transactions; it does not import unrelated terms from
+the vendors' direct consumer services.
+
+- WaveSpeedAI terms: <https://wavespeed.ai/static/terms>
+- WaveSpeedAI commercial-use policy: <https://wavespeed.ai/docs/commercial-use-policy>
+- Qwen-Image license: <https://github.com/QwenLM/Qwen-Image/blob/main/LICENSE>
+
+## Qwen Create consumer output
+
+`qwen-create-qwen-image-2.png` is the original 2048 x 2048 PNG downloaded from
+an authenticated Qwen Create generation on 2026-09-03. It was generated by
+`Qwen-Image 2.0` at 1:1 using the neutral still-life prompt recorded above.
+The current global consumer surface differs from the supported Chinese Qwen
+text mark: it places a small Qwen symbol at the bottom right, not
+`千问AI生成`. The existing Qwen text detector therefore correctly does not
+claim this new shape (measured strict confidence 0.178).
+
+- SHA-256: `60c39ed8aedb081193c62289be549785e74d31fc8d071961003fabd74712429d`
+- Expected metadata signal: TC260 AIGC label
+- Expected `ContentProducer`: `001191440101MA9Y9T4H7A00000`
+- Expected visible result: no registered visible mark; the Qwen symbol is a
+  newly observed, currently unsupported variant
+- License: repository license; generated and explicitly cleared by the
+  maintainer
+- Qwen Create terms: <https://terms.alicdn.com/legal-agreement/terms/c_end_product_protocol/20260519200335649/20260519200335649.html>
+
+## Open DWT-DCT
+
+`sdxl-dwt-dct.png` is a real AI-generated carrier with the public 48-bit SDXL
+watermark embedded by ShieldMnt's `invisible-watermark` encoder using its
+`dwtDct` method. The carrier is the original `kling-image-v3.png` WaveSpeedAI
+output documented above, not a procedurally generated test texture. Encoding
+was lossless to PNG and removed the source container metadata; the resulting
+fixture contains only the expected open DWT-DCT signal.
+
+- Source carrier SHA-256: `501ab865b47ba59b64bc0f68118300744b0d5c7be2fa4e2ecbb3a78de5d8a82b`
+- Fixture SHA-256: `9ec3dcbfea19e4651b898f98ada28a1c81f054d63621a0bba2d484aa77da251a`
+- Payload: `0b101100111110110010010000011110111011000110011110`
+- Expected signal: open DWT-DCT, `Stable Diffusion XL`
+- Verification: 48/48 payload bits recovered by both the upstream decoder and
+  the in-tree decoder; `identify` reports the expected high-confidence signal
+- Encoder: <https://github.com/ShieldMnt/invisible-watermark>
+- License: repository license; the encoder is MIT-licensed
+
+## Microsoft InvisMark
+
+### Microsoft Paint
+
+`microsoft-paint-invismark.png` is the original byte stream supplied directly
+by Xusheng Li on 2026-09-02 after his reverse-engineering research documented
+Paint's pixel watermark and its matching C2PA soft binding. He authorized public
+redistribution of the fixture under the MIT license. The neutral image was
+generated by Microsoft Paint from the prompt `a cobalt blue circle above a tiny
+orange square`.
+
+- Source research: <https://xusheng.dev/posts/reversing/mspaint_invisible_watermark/main/>
+- SHA-256: `74eda22d210d534fcb5b75bedf8acd3bd110b48a95f4b9e546cd34f546effc05`
+- Dimensions: 1254 x 1254 RGB PNG
+- Expected signal: C2PA soft binding `com.microsoft.invismark.1`
+- Expected watermark ID: `a4ed421e-7c37-4409-998e-f8788c564572`
+- Expected platform: `Microsoft (Copilot / Designer)`
+- Expected C2PA result: valid asset binding and signature
+- License: MIT, reproduced in `../licenses/xusheng-li-paint-invismark-MIT.txt`
+
+### Microsoft MAI-Image through OpenRouter
+
+`microsoft-invismark.png` is the original byte stream returned by OpenRouter's
+Image API for `microsoft/mai-image-2.5-pro` on 2026-09-02. The request used a
+repository-maintainer account and asked for one 1:1 image. OpenRouter routed
+the request to Microsoft Azure. Microsoft states that it does not claim
+ownership of AI-service output; the maintainer distributes this output under
+the repository license.
+
+- SHA-256: `be27ac7c351e7f381dc69e140ca3611ecd9db81e40926c68050ceffdd0ce6c04`
+- Expected signal: C2PA soft binding `com.microsoft.invismark.1`
+- Expected watermark ID: `19b070a1-23f0-40eb-826c-cade306337eb`
+- Expected platform: `Microsoft (Copilot / Designer)`
+- Request cost recorded by OpenRouter: USD 0.110757
+- License: repository license
+- Terms: <https://www.microsoft.com/en/servicesagreement/>
+
+### Microsoft MAI-Image through Bing Image Creator
+
+`microsoft-bing-image-creator.jpg` is the original download produced without
+sign-in by Microsoft's public Bing Image Creator on 2026-09-03. The page named
+the model `MAI-Image-2.5-Flash`; it used the neutral still-life prompt recorded
+above and the 3:2 aspect ratio. The downloaded image has no visible AI badge,
+so it does not close the separate visible Microsoft-badge fixture request.
+
+- SHA-256: `55cad5355b6eeeb25f84ea074f85c0ea55b82d63c27f43e3429bb75f28734ac7`
+- Dimensions: 1248 x 832 RGB JPEG
+- Expected signal: valid C2PA plus soft binding `com.microsoft.invismark.1`
+- Expected watermark ID: `aec9a34e-665f-4549-9c02-9d29337a5de6`
+- Expected platform: `Microsoft (Copilot / Designer)`
+- License: repository license
+- Terms: <https://www.microsoft.com/en/servicesagreement/>
+
 ## Adobe TrustMark
 
 `adobe-trustmark-p.png` is Adobe's official `images/ghost_P.png` Variant P

data/fixtures/visible/README.md

@@ -17,6 +17,154 @@ The examples demonstrate DETECTION geometry and house style, not vendor raster
 fidelity; real-world variants (fonts, opacities, sizes) are covered by the
 engines' recorded calibration evidence.
 
+The Qwen, Kling, Yuanbao, Baidu, Jimeng, LiblibAI, Microsoft, Sora, Hailuo, and Veo
+directories additionally contain real provider-marked sources. These files
+retain the source bytes and names used here are deliberately distinct from the
+generated canonical examples. The current LiblibAI output is evidence of a
+provider format change, not a positive example for the registered historical
+wordmark detector:
+
+| File | Source | SHA-256 | Expected detector |
+| --- | --- | --- | --- |
+| `qwen/provider-original.png` | OpenNoMark `examples/qwen/image_324855086256596.png`, commit `9455d2d` | `dce9e17c9b9b0483c672b71183b6eb5562f8205bb39a6da14451e07db13b1a50` | Qwen, confidence 0.73 |
+| `kling/provider-original-direct.png` | Authenticated Kling AI IMAGE 3.0 generation, downloaded 2026-09-04 | `aefbf69a99cf7eb4211cc0513c6979b81731107a1bc605c972e01900b7c56f51` | Kling, confidence 0.43 |
+| `yuanbao/provider-original.png` | Authenticated Tencent Yuanbao AI Image generation, downloaded 2026-09-05 | `e4fd856565d0434ef06deb78ff2088e597c4fec98640ad737213c7c0a917c82d` | Yuanbao, confidence 0.49 |
+| `baidu/provider-original.jpeg` | OpenNoMark `examples/baidu/baidu_01.jpeg`, commit `9455d2d` | `52852c528f1a7b8918b665b2fcf883737ecc5016481d9c7683ebe07e152cc9d2` | Baidu, confidence 0.66 |
+| `jimeng_pill/provider-published-example.jpg` | JPEG embedded on page 29 of Zhonglun W&D's 2026 *Bank Finance Legal Newsletter* | `1182fba74d3753785345f8a35d09a8c9b52ea8383ebe9ee999d0d027437f03fd` | Jimeng AI pill, confidence 0.28; Jimeng wordmark, confidence 0.61 |
+| `liblib/current-provider-output.png` | Authenticated LiblibAI Smart Image V2 generation, downloaded 2026-09-05 | `60398d4f06fd50e047d3321c62405dae0a1c4a7070e77ac5e0548c516257d2e3` | No `liblib` detection: current top-left `AI生成` pill differs from the registered bottom-center `LiblibAI` wordmark |
+| `microsoft/provider-original.png` | Authenticated Microsoft Copilot generation, downloaded 2026-09-03 | `0e76fb8aa0540b18fee4d63ac4b5fd63c7eee310474e896d21d27e668403afe7` | Microsoft, confidence 0.54 |
+| `sora/provider-frame.jpg` | Sora 2 video frame from LLinked's Apache-2.0 `sora-watermark-dataset` | `bbcf70b737c30568668572a5bb23e70c52c9687808b0714ca98f9fac073f12c4` | Sora frame localization, confidence 0.69 |
+| `sora/provider-original.mp4` | LLinked's Apache-2.0 `SoraWatermarkCleaner` fixture `resources/puppies.mp4`, commit `ad35ce9` | `7dd8a9d43d43cd5b901946c7ba14e8018e18d47e75f0f774157327ba7e9181c5` | Sora, 300/300 stable frames; Sora C2PA claim |
+| `hailuo/provider-original.mp4` | Authenticated Hailuo AI MiniMax H3 generation, downloaded with `With Watermark` selected on 2026-09-03 | `6152609e0339c443af79e244440e1b1050f3c615a50f76bfaf6146584e68142f` | Hailuo, 124/124 stable frames |
+| `kling/provider-original.mp4` | Authenticated Kling AI VIDEO 3.0 generation, downloaded 2026-09-04 | `f3e8d6a765fca699036d68fde28eb16f7aed97b6702f06f318e61ae8d4e53a69` | Kling, 121/121 stable frames |
+| `veo/provider-original.mp4` | Authenticated Google Flow Veo 3.1 Fast generation with `Visible watermarking` enabled, downloaded 2026-09-03 | `e778194b545e34dafd2d5be58691031a070862890c41e6c527a652a114a7c7a4` | Veo, 192/192 stable frames |
+
+OpenNoMark describes its corpus as real-image examples and distributes the
+repository under CC BY-NC-SA 4.0. Its license text is reproduced in
+`../../licenses/open-no-mark-CC-BY-NC-SA-4.0.txt`. The upstream repository does
+not record per-image authorship beyond that repository-level license and claim.
+The Qwen and Baidu files remain under that license and are not offered under
+this repository's Apache-2.0 license.
+
+The Microsoft file is the original 1024 x 1024 PNG downloaded from an
+authenticated Copilot image-generation conversation. It uses the neutral
+still-life prompt recorded in `../README.md`, carries the visible top-right
+`Made with AI` pill, valid Microsoft C2PA, and InvisMark soft-binding ID
+`975290d4-9c2f-4359-ad5a-92c5b5b850a4`. Microsoft does not claim ownership of
+AI-service output; the maintainer distributes this generated output under the
+repository license.
+
+The Sora frame is the original JPEG frame
+`images/train/images/failed_image_000016_frame_000150.jpg` from LLinked's
+`sora-watermark-dataset`. The dataset card describes its images as frames
+extracted from Sora-generated videos, provides manual watermark boxes, and
+licenses the dataset under Apache-2.0. This neutral CGI frame carries the
+current moving mascot-and-wordmark raster and passes the in-tree frame
+localizer.
+
+The Sora MP4 is the byte-for-byte `resources/puppies.mp4` fixture tracked by
+LLinked's Apache-2.0 `SoraWatermarkCleaner` at commit `ad35ce9`. It preserves
+the moving mascot-and-wordmark raster, timing, audio, and the source C2PA
+manifest. The in-tree video path detects Sora on all 300 frames. The C2PA claim
+names Sora as the generator and OpenAI/Truepic as the issuer; its content
+integrity and signature verify, while the reader reports the signer certificate
+as expired and untrusted.
+
+- Sora watermark dataset:
+  <https://huggingface.co/datasets/LLinked/sora-watermark-dataset>
+- SoraWatermarkCleaner source fixture:
+  <https://github.com/linkedlist771/SoraWatermarkCleaner/blob/ad35ce99a34fc9f9f6d448537e0c348311e74ccd/resources/puppies.mp4>
+
+The Hailuo file is the original 2944 x 1248, 5-second MP4 downloaded from an
+authenticated Hailuo AI generation. It was generated with MiniMax H3 for 60
+top-up credits from the neutral prompt `A blue ceramic mug slowly rotates on a
+plain light gray studio table, soft even lighting, fixed camera, clean
+background.` The download menu explicitly offered clean and `With Watermark`
+variants; this fixture is the latter. It carries the visible lower-right
+`MINIMAX | hailuo AI` composite and a TC260 AIGC label naming MiniMax as the
+producer. The maintainer generated and explicitly cleared this output for use
+under the repository license.
+
+- Hailuo AI paid-service and credit terms:
+  <https://hailuoai.video/doc/payment-policy.html>
+
+The Kling video is the original 1280 x 720, 5-second MP4 generated with VIDEO
+3.0 for 30 credits at 720p without native audio. Its neutral prompt was `A
+locked-off wide shot of a small white paper boat floating across a calm
+dark-blue pond at dusk, gentle ripples, realistic cinematic lighting, no text,
+no logos.` It carries the fixed lower-right `KlingAI 3.0` logo and no locally
+readable provenance metadata. The maintainer generated and explicitly cleared
+the output for this noncommercial deterministic computer-vision regression
+fixture. Kling AI's terms say the user owns applicable rights in the output,
+require a regular account to retain Kling branding when distributing it, and
+prohibit commercial use without written permission. The fixture retains the
+brand and remains subject to those terms; it is not offered under the
+repository license.
+
+- Kling AI terms of service: <https://kling.ai/docs/user-policy>
+- Kling AI paid-service terms: <https://kling.ai/docs/payment-policy>
+
+The direct Kling image is the original 1024 x 1024 RGB PNG generated with
+IMAGE 3.0 in 1K SD mode for one credit. Its neutral prompt was `A documentary
+photograph of three smooth river stones on pale linen beside a small blue glass
+vase, soft natural daylight, plain uncluttered background, no text, no logos.`
+It carries the current lower-right `KlingAI 3.0` mark and a TC260 AIGC field
+whose producer code `001191110108335469089C10100` normalizes to Kuaishou's
+registered USCC. The maintainer generated and explicitly cleared the output for
+this noncommercial deterministic computer-vision regression fixture. The same
+Kling terms and retained-brand restriction listed for the video apply; the file
+is not offered under the repository license.
+
+The Yuanbao image is the original 1776 x 1328 RGB PNG returned by an
+authenticated AI Image conversation. It was generated at no charge from the
+neutral prompt `A documentary photograph of a blue ceramic mug on a plain
+light-gray studio table, soft even lighting, no text, no logos, no people.` It
+carries the visible lower-right two-line `元宝` / `AI生成` mark and a TC260 AIGC
+field naming Tencent's registered producer. The maintainer generated and
+explicitly cleared this output for use under the repository license.
+
+The Jimeng image is the byte-for-byte embedded JPEG extracted with
+`pdfimages` from page 29 of Zhonglun W&D's publicly distributed 2026 *Bank
+Finance Legal Newsletter*. It is a real Jimeng-generated debt-collection
+poster carrying both the top-left `AI生成` pill and the lower-right `即梦AI`
+wordmark. The repository retains one 705 x 705 image rather than the complete
+33-page publication, solely to test identification and removal of the two
+marks. Copyright remains with the source rights holders; this research fixture
+is not licensed under Apache-2.0. See
+`../../licenses/zhonglunwende-jimeng-fair-use.txt` for provenance and use
+limitations.
+
+- Zhonglun W&D source publication:
+  <https://www.zhonglunwende.com/uploads/20260202/97f9a8f64892eac6b7e04e5e7ea45d0e.pdf>
+
+The LiblibAI image is the original 2048 x 2048 RGBA PNG generated with Smart
+Image V2 for 18 introductory points from the same neutral prompt. It carries a
+top-left `AI生成` pill and a TC260 AIGC field whose producer code contains
+LiblibAI's registered USCC, but it does not carry the historical bottom-center
+`LiblibAI` wordmark that the registered `liblib` engine detects. This file
+therefore records the current provider behavior without falsely closing the
+historical positive-example gap. The maintainer generated and explicitly
+cleared the output for use under the repository license.
+
+- LiblibAI user agreement (generated-output ownership and watermark choices):
+  <https://www.liblib.art/activities/468ad794ccc7408d81757fd91be003ec?hideHeader=1>
+
+The Veo file is the original 1280 x 720, 8-second MP4 downloaded from an
+authenticated Google Flow project. It was generated with Veo 3.1 Fast for 20
+Flow credits from the neutral prompt `A blue mug rotates on gray. Static camera.
+No people, text, logos, or audio.` after the account's `Visible watermarking`
+setting was enabled. It carries the fixed, low-contrast `Veo` text at the bottom
+right, valid Google C2PA, and an invisible SynthID marker. Google documents that
+Flow clips can be downloaded and shared, states that Google does not claim
+ownership of original generated content, and explicitly identifies SynthID in
+all Flow video output. The maintainer distributes this generated output under
+the repository license.
+
+- Google Flow output and watermark documentation:
+  <https://support.google.com/flow/answer/16353333>
+- Google Flow download and sharing documentation:
+  <https://support.google.com/flow/answer/16935308>
+
 ## Regeneration
 
     uv run python scripts/render_visible_examples.py
@@ -27,12 +175,14 @@ 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>/provider-original.*
+                             Documented real provider-marked source where available
     <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
+configured position; `jimeng_pill` uses 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

data/image-watermark-examples.csv

@@ -0,0 +1,19 @@
+key,provider,watermark_type,path,status,verification,license
+gemini,Google Gemini,visible sparkle,data/calibration/gemini/gemini_black_2048.png,available,original provider capture and detector calibration,repository
+doubao,ByteDance Doubao,visible text,data/calibration/doubao/doubao_gray_1x1_1.png,available,original provider capture and detector calibration,repository
+jimeng,ByteDance Jimeng,visible wordmark,data/calibration/jimeng/jimeng_cap_C.png,available,original provider capture and detector calibration,repository
+qwen,Alibaba Qwen consumer app,visible text,data/fixtures/visible/qwen/provider-original.png,available,detected by Qwen engine; distributed under the OpenNoMark repository's CC BY-NC-SA 4.0 license; current global Qwen Create uses a different symbol captured in provenance fixtures,CC-BY-NC-SA-4.0; excluded from Apache-2.0
+kling,Kuaishou Kling AI,visible text,data/fixtures/visible/kling/provider-original-direct.png,available,authenticated Kling IMAGE 3.0 original; Latin KlingAI 3.0 mark detected at confidence 0.43; TC260 producer maps to Kuaishou,subject to Kling AI terms; noncommercial fixture
+yuanbao,Tencent Yuanbao,visible two-line text,data/fixtures/visible/yuanbao/provider-original.png,available,authenticated Yuanbao original; detected by Yuanbao engine at confidence 0.49; TC260 producer metadata maps to Tencent,repository
+samsung,Samsung Galaxy AI,visible Italian text,data/calibration/samsung/samsung_gray_1.png,available,original provider capture and detector calibration,repository
+runninghub,RunningHub,visible text,,missing,no redistributable provider original found,
+baidu,Baidu,visible text and tag,data/fixtures/visible/baidu/provider-original.jpeg,available,detected by Baidu engine; distributed under the OpenNoMark repository's CC BY-NC-SA 4.0 license,CC-BY-NC-SA-4.0; excluded from Apache-2.0
+liblib,LiblibAI,visible wordmark,data/fixtures/visible/liblib/current-provider-output.png,partial,"authenticated current LiblibAI original carries a top-left AI生成 pill rather than the registered historical bottom-center LiblibAI wordmark; TC260 producer metadata maps to LiblibAI; historical positive remains missing",repository
+microsoft,Microsoft image output,visible top-right AI badge,data/fixtures/visible/microsoft/provider-original.png,available,authenticated Copilot original detected by Microsoft engine at confidence 0.54; also has valid C2PA and InvisMark,repository
+jimeng_pill,ByteDance Jimeng,visible AI pill,data/fixtures/visible/jimeng_pill/provider-published-example.jpg,available,"real Jimeng output embedded in page 29 of Zhonglun W&D's 2026 Bank Finance Legal Newsletter; direct jimeng_pill detection confidence 0.28; the same image also carries the Jimeng wordmark",fair-use research fixture; excluded from Apache-2.0
+google_synthid,Google,image SynthID,data/synthid/originals/Gemini_Generated_Image_633uuy633uuy633u.png,available,provider oracle recorded in data/synthid/manifest.csv,repository
+openai_synthid,OpenAI,image SynthID,"data/synthid/originals/ChatGPT Image May 30, 2026, 10_31_08 AM.png",available,provider oracle recorded in data/synthid/manifest.csv,repository
+meta_content_seal,Meta Muse Image,image Content Seal,data/contentseal/originals/gen_fox_forest.webp,available,provider oracle recorded in data/contentseal/manifest.csv,repository
+microsoft_invismark,Microsoft Paint,image InvisMark,data/fixtures/provenance/microsoft-paint-invismark.png,available,"original Paint output supplied by Xusheng Li; valid C2PA names com.microsoft.invismark.1 and watermark ID a4ed421e-7c37-4409-998e-f8788c564572",MIT
+open_dwt_dct,Stable Diffusion / SDXL / FLUX workflows,open DWT-DCT,data/fixtures/provenance/sdxl-dwt-dct.png,available,real AI-generated carrier with the official SDXL payload recovered 48/48 by upstream and in-tree decoders,repository
+adobe_trustmark_p,Adobe,image TrustMark Variant P,data/fixtures/provenance/adobe-trustmark-p.png,available,official Adobe example and expected schema recorded in data/fixtures/README.md,MIT

data/licenses/open-no-mark-CC-BY-NC-SA-4.0.txt

@@ -0,0 +1,439 @@
+Attribution-NonCommercial-ShareAlike 4.0 International
+
+=======================================================================
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data/licenses/xusheng-li-paint-invismark-MIT.txt

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 Xusheng Li
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

data/licenses/zhonglunwende-jimeng-fair-use.txt

@@ -0,0 +1,22 @@
+Jimeng published-image research fixture
+=======================================
+
+File:
+  data/fixtures/visible/jimeng_pill/provider-published-example.jpg
+
+Source:
+  Zhonglun W&D, Bank Finance Legal Newsletter, 2026, page 29
+  https://www.zhonglunwende.com/uploads/20260202/97f9a8f64892eac6b7e04e5e7ea45d0e.pdf
+
+Extraction:
+  The file is the JPEG image embedded in the source PDF, extracted byte-for-byte
+  with pdfimages. SHA-256:
+  1182fba74d3753785345f8a35d09a8c9b52ea8383ebe9ee999d0d027437f03fd
+
+Use in this repository:
+  This single image is retained as a minimal research and interoperability
+  fixture for identifying and removing the visible Jimeng AI-generation marks.
+  It is not offered under this repository's Apache-2.0 license. Copyright and
+  all other rights remain with their respective holders. No license for uses
+  outside the repository's research, testing, criticism, and documentation is
+  granted here.

data/video-watermark-examples.csv

@@ -0,0 +1,8 @@
+key,provider,watermark_type,path,status,verification,license
+sora,OpenAI Sora,visible moving mascot and wordmark,data/fixtures/visible/sora/provider-original.mp4,available,"Apache-2.0 upstream original; detected by Sora engine on 300/300 frames; C2PA claim names Sora and OpenAI/Truepic, with valid integrity and signature but an expired untrusted signer certificate",Apache-2.0
+veo,Google Veo,visible fixed text,data/fixtures/visible/veo/provider-original.mp4,available,"authenticated Google Flow Veo 3.1 Fast original; detected by Veo engine on 192/192 frames; valid C2PA and provider-confirmed SynthID",repository
+seedance,ByteDance Seedance,visible boxed AI label,,missing,"OpenRouter Seedance 2.0 Mini with watermark=true produced BytePlus C2PA but no visible boxed AI label; direct consumer original still needed",
+doubao,ByteDance Doubao,visible fixed text,,missing,no redistributable provider original found,
+dola,ByteDance Dola,visible fixed text,,missing,no redistributable provider original found,
+hailuo,MiniMax Hailuo AI,visible composite label,data/fixtures/visible/hailuo/provider-original.mp4,available,"authenticated Hailuo AI MiniMax H3 original downloaded with With Watermark selected; detected by Hailuo engine on 124/124 frames; TC260 AIGC label names MiniMax",repository
+kling,Kuaishou Kling AI,visible fixed logo and wordmark,data/fixtures/visible/kling/provider-original.mp4,available,"authenticated Kling AI VIDEO 3.0 original; detected by Kling engine on 121/121 frames; no locally readable provenance metadata",Kling AI terms; noncommercial fixture