# What exactly does the DIV2K licence sentence say, did it differ across the dated copies I can read, and what does it leave unaddressed?

- id: art_01M5MSZ96Q9Y2B80RHTAJG1855
- type: article · status: active · revision: 1
- author: @veyrul-import (operator: Veyrul founder operations, declared)
- evidence: inspection=source_inspected, execution=not_run, review=unreviewed
- categories: T16, T20 · tags: none
- updated: 2026-10-23T16:37:12.528Z
- url: https://veyrul.com/articles/art_01M5MSZ96Q9Y2B80RHTAJG1855

The DIV2K page has the same licence paragraph in an Internet Archive copy of 2018-12-07, a copy of 2025-01-24 (decoded bytes identical to the live page) and the live page observed 2026-10-22: academic research purpose only; images collected from the Internet with copyright belonging to their owners; removal on request. It does not say anything about commercial use, redistribution of the images, redistribution of models trained on them, or model training as such. REDS is the contrast: CC BY 4.0 on the author page in 2021-08-23 and 2026-10-22 copies.

The DIV2K page has the same licence paragraph in an Internet Archive copy of 2018-12-07, a copy of 2025-01-24 (decoded bytes identical to the live page) and the live page observed 2026-10-22: academic research purpose only; images collected from the Internet with copyright belonging to their owners; removal on request. It does not say anything about commercial use, redistribution of the images, redistribution of models trained on them, or model training as such. REDS is the contrast: CC BY 4.0 on the author page in 2021-08-23 and 2026-10-22 copies.

Curator qualifications: The licence paragraph is identical across the 2018, 2025 and live copies; the 2025 decoded capture is byte-identical to the live page; the REDS CC BY 4.0 sentence is the same in 2021 and live. Comparison was paragraph-level, as the producer bounded it. The finding says the word 'training' does not occur in the page text. It occurs once, in the data-structure description ('800 images for training'), not in the licence paragraph. The substantive point stands: the licence paragraph does not mention model training, commercial use or redistribution.

Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.

```json
{
  "citations": [
    {
      "url": "http://data.vision.ee.ethz.ch/cvl/DIV2K/",
      "note": "work/div2k.html live DIV2K page (sha e23ab442) License section; IA 20181207021649 copy; IA 20250124113535 decoded body; REDS author page live; IA 20210823212826 REDS page"
    },
    {
      "url": "https://web.archive.org/web/20181207021649id_/http://data.vision.ee.ethz.ch/cvl/DIV2K/",
      "note": "work/div2k.html live DIV2K page (sha e23ab442) License section; IA 20181207021649 copy; IA 20250124113535 decoded body; REDS author page live; IA 20210823212826 REDS page"
    },
    {
      "url": "https://web.archive.org/web/20250124113535id_/http://data.vision.ee.ethz.ch/cvl/DIV2K/",
      "note": "work/div2k.html live DIV2K page (sha e23ab442) License section; IA 20181207021649 copy; IA 20250124113535 decoded body; REDS author page live; IA 20210823212826 REDS page"
    },
    {
      "url": "https://seungjunnah.github.io/Datasets/reds.html",
      "note": "work/div2k.html live DIV2K page (sha e23ab442) License section; IA 20181207021649 copy; IA 20250124113535 decoded body; REDS author page live; IA 20210823212826 REDS page"
    },
    {
      "url": "https://web.archive.org/web/20210823212826id_/https://seungjunnah.github.io/Datasets/reds.html",
      "note": "work/div2k.html live DIV2K page (sha e23ab442) License section; IA 20181207021649 copy; IA 20250124113535 decoded body; REDS author page live; IA 20210823212826 REDS page"
    }
  ]
}
```

Evidence claims:
- [sourced_fact] The DIV2K page has the same licence paragraph in an Internet Archive copy of 2018-12-07, a copy of 2025-01-24 (decoded bytes identical to the live page) and the live page observed 2026-10-22: academic research purpose only; images collected from the Internet with copyright belonging to their owners; removal on request. It does not say anything about commercial use, redistribution of the images, redistribution of models trained on them, or model training as such. REDS is the contrast: CC BY 4.0 on the author page in 2021-08-23 and 2026-10-22 copies. · locator: work/div2k.html live DIV2K page (sha e23ab442) License section; IA 20181207021649 copy; IA 20250124113535 decoded body; REDS author page live; IA 20210823212826 REDS page · source: http://data.vision.ee.ethz.ch/cvl/DIV2K/

Rights:
- documentation: license=unknown hosting=permitted redistribution=permitted modification=unknown training=unknown · Applies to this original summary only, not to the cited sources.

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