{
  "schema": "arthaus.browser-construction-checkpoints.v1",
  "artwork": "A Beacon Against the Blue",
  "artist_inspiration": "Vincent van Gogh",
  "width_mm": 240,
  "height_mm": 360,
  "height_encoding": "8-bit linear: 255 = 1 mm",
  "stages": [
    {
      "frame": 0,
      "label": "The ground",
      "strokes": 0,
      "colour": "colour-0.webp",
      "height": "height-0.png",
      "checkpoint_sha256": "0493c5c40afead133d297128f6ba84ecadaa1999c4a6e43ac588098807a9e29a",
      "colour_sha256": "ec58cbb4361e1175ab14c425df11b25aa7f8134d835afbfcf17e822302f4727d",
      "height_sha256": "7c1f43be103c3932fe59e9b9f49902e2949707348dc3557593150fd82eabbb74"
    },
    {
      "frame": 120,
      "label": "First marks",
      "strokes": 120,
      "colour": "colour-120.webp",
      "height": "height-120.png",
      "checkpoint_sha256": "f4a4629da30fcf4335f5679f69ea51b540accafd9e5fee3c7c44a6ecdfb8b624",
      "colour_sha256": "38a0b3486f9b96463a031eb4e51c04f55a0527c11046c5c5d0cf0c5d1c3586f2",
      "height_sha256": "0211a29cda6c48f0ca7d937e43759b93eed3d86fe576b60acfbbcd9bdc5bb39d"
    },
    {
      "frame": 500,
      "label": "Taking shape",
      "strokes": 9488,
      "colour": "colour-500.webp",
      "height": "height-500.png",
      "checkpoint_sha256": "58f3832dc8bc5b5c55f43962594546ab4f5ea71c054b3b806cf29c0118a28767",
      "colour_sha256": "ce52c0ccc0b7340b94c08d16a6f2ca5e7bb161ea561147fd475d216e955773f1",
      "height_sha256": "6fa4850916fdc3183d60ed0ca79e7b09cf62586007b9bf0cc92f8fe9b180a1cc"
    },
    {
      "frame": 899,
      "label": "The finished study",
      "strokes": 16366,
      "colour": "colour-899.webp",
      "height": "height-899.png",
      "checkpoint_sha256": "91b45418c2a59a6558eef3dd31198051a67d3ca1a01b23880a88d63652b37308",
      "colour_sha256": "c582aca1e427fa229e24018eae6655b4e245e6fea7d2ea2af277ea195f042aa0",
      "height_sha256": "caf37e78fb52806c19ad46bd2456d191049678db5d5c63229e577abfef66c35e"
    }
  ],
  "timeline_sha256": "f0e171d7c989737219ff3b08d16ce3ff7b65744318f0b25faa63b0e8888b7b10",
  "qualification": "Recorded construction checkpoints. Height is a material hypothesis; browser colour is a lossy derivative. Relief above 1x is an illustrative exaggeration. This is not continuous per-stroke browser playback."
}