# YABCHI reference photography: sources and rights

Curated 13 November 2026. These thirteen photos are **demo reference imagery**, not seller inventory, maker portfolios, current availability, authenticity evidence, or an endorsement. Each source was retrieved through the official Wikimedia Commons API and its file-page licence metadata. Images were decoded, oriented, proportionally resized and converted to WebP; content was not retouched. The 640/1200 filenames indicate maximum target widths; source-limited derivatives are not upscaled. The manifest records actual dimensions.

CC BY and CC BY-SA attributions and licence links must remain publicly reachable beside photo-backed content. CC BY-SA derivatives retain the source image licence. Public-domain and CC0 sources are credited for provenance. These image licences do not relicense unrelated application source. A historic Unsplash image is used under the CC0 terms preserved on its Commons page, not an assumption about the current Unsplash licence.

| Asset | Credited creator/source | Licence | Exact source page |
| --- | --- | --- | --- |
| `analog-slr` | Berthold Werner | [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0) | [Rolleiflex SL 35 E.jpg](https://commons.wikimedia.org/wiki/File:Rolleiflex_SL_35_E.jpg) |
| `quiet-radio` | Ged Carroll | [CC BY 2.0](https://creativecommons.org/licenses/by/2.0) | [Braun SK1 radio (6210541010).jpg](https://commons.wikimedia.org/wiki/File:Braun_SK1_radio_(6210541010).jpg) |
| `gameboy-original` | Evan-Amos | [Public domain](https://commons.wikimedia.org/wiki/Template:PD-self) | [Game-Boy-Original.jpg](https://commons.wikimedia.org/wiki/File:Game-Boy-Original.jpg) |
| `walnut-chair` | Photographer not individually credited; Open Access image provided by The Metropolitan Museum of Art | [CC0](http://creativecommons.org/publicdomain/zero/1.0/deed.en) | [Side Chair MET 60254.jpg](https://commons.wikimedia.org/wiki/File:Side_Chair_MET_60254.jpg) |
| `easy-chair` | Photographer not individually credited; Open Access image provided by The Metropolitan Museum of Art | [CC0](http://creativecommons.org/publicdomain/zero/1.0/deed.en) | [Easy Chair MET 79683.jpg](https://commons.wikimedia.org/wiki/File:Easy_Chair_MET_79683.jpg) |
| `sculptural-vase` | Christopher Dresser / Mintons | [CC0](http://creativecommons.org/publicdomain/zero/1.0/deed.en) | [U-shaped vase MET DT5885.jpg](https://commons.wikimedia.org/wiki/File:U-shaped_vase_MET_DT5885.jpg) |
| `ceramic-lamp` | Fulper Pottery Co. | [CC0](http://creativecommons.org/publicdomain/zero/1.0/deed.en) | [Table Lamp MET DT4342.jpg](https://commons.wikimedia.org/wiki/File:Table_Lamp_MET_DT4342.jpg) |
| `potter-hands` | Gannu03 | [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0) | [Potter shaping clay on a traditional manual potter’s wheel in India 01.jpg](https://commons.wikimedia.org/wiki/File:Potter_shaping_clay_on_a_traditional_manual_potter%E2%80%99s_wheel_in_India_01.jpg) |
| `wood-workshop` | s w wengenroad | [CC0](http://creativecommons.org/publicdomain/zero/1.0/deed.en) | [Woodworking workshop (Unsplash).jpg](https://commons.wikimedia.org/wiki/File:Woodworking_workshop_(Unsplash).jpg) |
| `walnut-carving` | Daderot | [CC0](http://creativecommons.org/publicdomain/zero/1.0/deed.en) | [Side Chair, Boston, 1730-1745, walnut with maple - Chazen Museum of Art - DSC02579.JPG](https://commons.wikimedia.org/wiki/File:Side_Chair,_Boston,_1730-1745,_walnut_with_maple_-_Chazen_Museum_of_Art_-_DSC02579.JPG) |
| `workshop-stool` | Ditigibt | [Public domain](https://commons.wikimedia.org/wiki/Template:PD-self) | [Wooden stool made in 1930 in France.jpeg](https://commons.wikimedia.org/wiki/File:Wooden_stool_made_in_1930_in_France.jpeg) |
| `waterproof-player` | Edd Thomas | [CC BY 2.0](https://creativecommons.org/licenses/by/2.0) | [Alba Aquaman personal stereo cassette player.jpg](https://commons.wikimedia.org/wiki/File:Alba_Aquaman_personal_stereo_cassette_player.jpg) |
| `twin-lens-archive` | Heimatmuseum Aesch | [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0) | [Rolleiflex Synchro Compur Twin-Lens Reflex Camera 1.jpg](https://commons.wikimedia.org/wiki/File:Rolleiflex_Synchro_Compur_Twin-Lens_Reflex_Camera_1.jpg) |

`photos.json` includes source and download URLs, source SHA-256 hashes, responsive derivative hashes/dimensions/bytes, attribution and explicit demo/reference flags. The public application should consume this manifest or persist the same provenance when creating additive photo-backed requests. Existing records/uploads must not be overwritten.

For the two museum images without an individual photographer in source metadata, the manifest explicitly records that absence and credits the institutional provider. Do not invent an individual creator. Some Commons originals returned HTTP 429; where available the officially supplied cached thumbnail URL was used and recorded as `downloadedUrl`. Failed downloads are excluded from the public manifest.