{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn05745_004.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Arcade, New-York | 1912 | key map | mapsnap generated fit (2026-10-18)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-18"},{"label":"run","value":"corpus-v2"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804am:g3804am_g057451912:05745_1912-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Arcade, New-York | 1912 | sanborn05745_004 p1 [2]","metadata":[{"label":"streets","value":"13"},{"label":"intersections","value":"18"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6878.4"},{"label":"split_canvas_h","value":"4005.3"}],"created":"2026-10-18T21:52:08Z","modified":"2026-10-18T21:52:08Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804am:g3804am_g057451912:05745_1912-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804am:g3804am_g057451912:05745_1912-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613,0.0 0.0,0.0 0.0,1001.3 1315.5,1001.3 1315.5,836.8 1613,836.8 1613,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804am:g3804am_g057451912:05745_1912-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[498.8,285.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.4181593,42.5330103]}},{"type":"Feature","properties":{"resourceCoords":[442.8,757.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.4322569,42.533719]}}]}}]}