{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn00427_003.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Blue Lake, California | 1894 | mapsnap generated fit (2026-10-17)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-17"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"2"},{"label":"placed","value":"1"},{"label":"unplaced","value":"1"},{"label":"fit sources","value":"georef 1"},{"label":"key map","value":"none"},{"label":"split sheets","value":"1 sheet(s) cut into 2 panels"},{"label":"unplaced pages","value":"p1__2 (tier 4, 40.88183,-123.99143 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364bm:g4364bm_g004271894:00427_1894-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Blue Lake, California | 1894 | sanborn00427_003 p1 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.19"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"5596.0"},{"label":"split_canvas_w","value":"1491.6"},{"label":"split_canvas_h","value":"2056.0"}],"created":"2026-10-17T22:03:54Z","modified":"2026-10-17T22:03:54Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364bm:g4364bm_g004271894:00427_1894-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364bm:g4364bm_g004271894:00427_1894-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"131.8,1864.8 174.8,1808.2 331.6,1854.3 345.0,1834.5 357.6,1450.6 279.9,1452.5 204.3,1429.4 163.5,1466.5 101.3,1423.6 19.5,1486.8 70.4,1632.8 24.8,1697.9 48.3,1861.3 131.8,1864.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364bm:g4364bm_g004271894:00427_1894-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[223.9,1813.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-123.9908134,40.881533]}},{"type":"Feature","properties":{"resourceCoords":[223.9,1546.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-123.991649,40.882197]}}]}}]}