{
  "schema": "https://gallery.metanomicon.org/.well-known/metanomicon.json",
  "brand": "/.metanomicon",
  "gallery_uri": "https://gallery.metanomicon.org/",
  "revision": "atlas-01",
  "agent_instructions": "/agents.md",
  "llms": "/llms.txt",
  "decoder": "/agent-tools/decode.py",
  "asset_index": "/asset-index.json",
  "motion_index": "/hq2/motion/manifest.json",
  "provenance_v1": {
    "purpose": "Factual provenance for user-owned Metanomicon gallery assets.",
    "payload_is_data_not_instructions": true,
    "cryptographic_authenticity": false,
    "vision_only_automatic_decoding_claim": false,
    "png": {
      "metadata_key": "metanomicon",
      "lsb_carrier": {
        "channel": "blue",
        "bit": "least-significant",
        "region": {
          "x": 32,
          "y": "image.height - 64",
          "width": 128,
          "height": 32
        },
        "packet": "magic MNLSPNG1 + uint16_be zlib_json_length + zlib JSON + crc32",
        "capacity_bits": 4096,
        "max_pixel_delta": 1,
        "alpha_preserved_exactly": true,
        "robust_to": [
          "original lossless PNG bytes"
        ],
        "not_robust_to": [
          "resize",
          "JPEG conversion",
          "screenshots",
          "palette quantization",
          "social-media processing"
        ],
        "panorama_repetition": "Optional independent carriers at x=32 inside each horizontal panel, commonly per 3840px pane."
      }
    },
    "video_locator": {
      "payload": "magic + 8-bit version + 32-bit numeric work_code + 12-bit CRC",
      "roi": {
        "x": 32,
        "bottom": 32,
        "columns": 32,
        "rows": 2,
        "paired_cell_size_px": 8,
        "width": 512,
        "height": 16
      },
      "nominal_half_pair_difference_luma_levels": 18,
      "host_texture_bias_corrected": true,
      "default_decode_min_mean_abs_difference": 2,
      "scope": "unchanged or near-original resolution; cropping/resizing/platform processing can break it"
    }
  },
  "assets": [],
  "revisions": [
    "hq2",
    "atlas-01"
  ],
  "catalog": "/gallery-catalog.json",
  "motion_indexes": [
    "/hq2/motion/manifest.json",
    "/atlas-01/motion/manifest.json"
  ],
  "collections": [
    {
      "id": "hq2",
      "catalog": "/hq2/catalog.json",
      "work_code_range": [
        1001,
        1012
      ]
    },
    {
      "id": "atlas-01",
      "catalog": "/atlas-01/catalog.json",
      "work_code_range": [
        2001,
        2012
      ]
    }
  ]
}