## Content-addressed raster store

Cloud-Optimized GeoTIFFs named by a hash of their **contents**, not by species
or release. That is why a surface unchanged between releases is stored once:
measured across v3/v5/v6/v7, 120,974 model-surfaces collapse to 19,766 distinct
rasters.

Subfolders are **grids**, because a `cell_id` means a different place on each:

- `usa05` — v1–v7: 3103 × 2006 at 0.05°
- `global05` — v8+: 7200 × 3600 at 0.05°

You are not expected to guess a filename. Resolve one from a release's
`tables/model_asset.parquet` (species) or `tables/score_cog.parquet` (scores),
or search the **STAC API** (see `marine-atlas/{ver}/`).

```bash
# any COG here is a normal GDAL raster, readable in place
gdalinfo /vsicurl/https://storage.marinesensitivity.org/marine-atlas/cog/global05/<hash>.tif
```