Minimal IIIF Presentation 3 manifest for Mirador issue #4533 - canvas coordinate space (3600px) differs from painted image pixel size (930px)

manifest.json

{
  "@context": "http://iiif.io/api/presentation/3/context.json",
  "id": "https://gist.githubusercontent.com/rdmpage/42b139424fde0ea76f5aed203c596aa9/raw/manifest.json",
  "type": "Manifest",
  "label": {
    "en": [
      "Mirador #4533 - canvas vs image coordinate scale"
    ]
  },
  "items": [
    {
      "id": "https://example.org/canvas/p3",
      "type": "Canvas",
      "width": 3600,
      "height": 4831,
      "items": [
        {
          "id": "https://example.org/canvas/p3/ap1",
          "type": "AnnotationPage",
          "items": [
            {
              "id": "https://example.org/canvas/p3/ap1/a1",
              "type": "Annotation",
              "motivation": "painting",
              "body": {
                "id": "https://bhl-open-data.s3.us-east-2.amazonaws.com/web/Amphibianreptil9A/Amphibianreptil9A_0003_large.webp",
                "type": "Image",
                "width": 930,
                "height": 1248,
                "format": "image/webp"
              },
              "target": "https://example.org/canvas/p3"
            }
          ]
        }
      ],
      "annotations": [
        {
          "id": "https://example.org/canvas/p3/comments",
          "type": "AnnotationPage",
          "items": [
            {
              "id": "https://example.org/canvas/p3/comments/a1",
              "type": "Annotation",
              "motivation": "commenting",
              "body": {
                "type": "TextualBody",
                "value": "xywh=100,100,800,300 expressed in canvas units",
                "format": "text/plain"
              },
              "target": "https://example.org/canvas/p3#xywh=100,100,800,300"
            }
          ]
        }
      ]
    }
  ]
}