The thumbnails portion of the UX is a better description of their use than what is in the tech spec. It would be good to either cross link them or to embed a portion of one in the other.
The portion of the tech spec that I would expect to cross link to ishttps://c2pa.org/specifications/specifications/2.0/ux/UX_Recommendations.html#thumbnails
https://github.com/c2pa-org/specifications/blob/153a62110fa0f6a61d4b960509fc50a645c6c2e1/build/site/specifications/2.0/ux/UX_Recommendations.html#L1440
The thumbnails portion of the UX is a better description of their use than what is in the tech spec. It would be good to either cross link them or to embed a portion of one in the other.
The portion of the tech spec that I would expect to cross link to ishttps://c2pa.org/specifications/specifications/2.0/ux/UX_Recommendations.html#thumbnails