spaitial-echo-3-captured-spaces AccuCities’ stereophotogrammetry model of London, published in 2022; independently captured-space context, not an Echo-3 reconstruction. Image: AccuCities, CC BY-SA 4.0; resized with margins. Creator / credit: AccuCities Image source: https://commons.wikimedia.org/wiki/File:Photogrammetry_3D_city_model_of_London.jpg Downloaded asset: https://upload.wikimedia.org/wikipedia/commons/7/79/Photogrammetry_3D_city_model_of_London.jpg?utm_source=commons.wikimedia.org&utm_campaign=imageinfo&utm_content=original License / permission: CC BY-SA 4.0 Permission URL: https://creativecommons.org/licenses/by-sa/4.0 Exact declaration / excerpt: Creative Commons Attribution-Share Alike 4.0 Transformation: Wikimedia 1280px thumbnail, complete image proportionally resized on white 1600 x 900 canvas and WebP encoded; no crop, overlays or fabricated UI. Final image SHA-256: 1bea6c596bfd0c6c7f06438aef90955405ac6909fd39458f89d761f7b4fd2333 Full license retained here: CC-BY-SA-4.0.txt Product-media gap: No reusable Echo-3 product image established; official press-kit contains logos/team photos/older PDFs, not cleared new demos. Official product source: https://spaitial.ai/blog/echo-3-release Editorial review: User permits genuine official or external subject/workflow images. Root accepted this explicitly labeled historical/illustrative context exception; no product-output claim is made.