{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn01569_006.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Boise, Idaho | 1949 | 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:gmd427m:g4274m:g4274bm:g015691949:01569_1949-0000/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boise, Idaho | 1949 | sanborn01569_006 p0","metadata":[{"label":"streets","value":"132"},{"label":"intersections","value":"436"}],"created":"2026-10-18T09:01:49Z","modified":"2026-10-18T09:01:49Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd427m:g4274m:g4274bm:g015691949:01569_1949-0000/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd427m:g4274m:g4274bm:g015691949:01569_1949-0000","type":"ImageService3","width":1607,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,1949.0 0.0,0.0 1607.0,0.0 1607.0,1949.0 0.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd427m:g4274m:g4274bm:g015691949:01569_1949-0000/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[706.1,1584.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-116.2036011,43.5971646]}},{"type":"Feature","properties":{"resourceCoords":[722.8,487.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-116.219745,43.6280689]}}]}}]}