{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn01567_005.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Blackfoot, Idaho | 1907 | key map | mapsnap generated fit (2026-10-22)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-22"},{"label":"run","value":"corpus-v2.1"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd427m:g4274m:g4274bm:g015671907:01567_1907-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Blackfoot, Idaho | 1907 | sanborn01567_005 p1 [2]","metadata":[{"label":"streets","value":"16"},{"label":"intersections","value":"22"},{"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":"4832.7"}],"created":"2026-10-22T13:16:12Z","modified":"2026-10-22T13:16:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd427m:g4274m:g4274bm:g015671907:01567_1907-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd427m:g4274m:g4274bm:g015671907:01567_1907-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613,0.0 0.0,0.0 0.0,923.9 1173.8,933.1 1170.6,1208.2 1613,1208.2 1613,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd427m:g4274m:g4274bm:g015671907:01567_1907-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1191.2,690.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-112.348545,43.188549]}},{"type":"Feature","properties":{"resourceCoords":[1030.7,727.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-112.3532087,43.1902019]}}]}}]}