Annual USDA NASS Cropland Data Layer (crop-specific land cover for CONUS) as an analysis-ready Icechunk Zarr store. Two groups: 30 m and 10 m (from 2024), each on a single EPSG:5070 grid with a year dimension. Pixels are bit-identical to the official rasters; class names/colors, CRS, citation, and per-year provenance are embedded as metadata. Sharded Zarr v3 layout: field-scale queries fetch tens of KB. US public domain.