Re: [Specifications] Hydra logo licensing (#181)

[CC BY-ND](https://creativecommons.org/licenses/by-nd/4.0/deed.en) would seem fine for the logo, but [CC BY-NC-ND](https://creativecommons.org/licenses/by-nc-nd/4.0/) would mean that no commercial product can advertise its use or conformance with Hydra, something that's explicitly acknowledged in the 
[W3C® Trademark and Servicemark License](https://www.w3.org/Consortium/Legal/trademark-license-19990516.html).

There are precedents but they are pretty narrow in scope: the Semantic Web and SVG "technology buttons" need permission for for-profit use, but in both cases, the logos alone don't (and the [SVG logo](https://www.w3.org/2009/08/svg-logos.html) alone is licensed under [CC BY-SA](https://creativecommons.org/licenses/by-sa/4.0/)). Some logos are licensed under [CC BY](https://creativecommons.org/licenses/by/4.0/) ([HTML5](https://www.w3.org/html/logo/), [WebGPU](https://www.w3.org/2023/02/webgpu-logos.html)).

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Received on Sunday, 24 August 2025 21:24:06 UTC