# Schema and coordinate version 0.1.0-alpha.1

Recording registry: one row per source asset/recording, not a guaranteed unique physical animal. Stable `recording_id`, `source_dataset`, source version/asset/path/checksum, lab/animal/session IDs, license, QC and hosted-component flags are required. Nullable biological fields stay unknown until directly inspected. JSON strings encode optional TCZYX shapes, XYZ voxel spacings, channel arrays, and source digest mappings.

Tracking: one row per observation; scope is recording + label_set + frame_index. Detection IDs and track assignments are unique in each valid scope. Native XYZ voxel fields remain present. Physical XYZ micrometers are nullable. `annotation_type`, raw scorer provenance, validity, and coordinate system distinguish trusted annotations, predictions, and unresolved provenance. Missing source observations are not interpolated; dropped perturbation observations remain rows with validity false.

ZephIR: normalized point coordinates map to continuous voxel centers as `normalized * axis_size - 0.5`, inverse of the native GUI's `(index + 0.5)/shape`. Original normalized values remain present. Out-of-bounds rows are preserved and flagged. Native imagery and annotations remain inspectable.

Targettrack: original frame CXYZ is permuted to CZYX. Mask centers are computed in native XYZ, separately from the unresolved original-to-processed affine direction. This is derived localization from a mask, with unknown annotation quality. No micron spacing is guessed.

Anatomy: same-animal reference origin is explicit; uncertainty is null where unknown. Population atlases are not substituted for temporal truth. SF behavior summaries preserve original timestamps, signal paths and empty source units; they cannot be interpreted as centerlines or synchronized 3D body transport without further audit.

Schemas are in `schemas/`, full Parquet types in `schemas/arrow_schemas.json`, and integrity results in `evaluation/validation.json`. Large structured tables are recording-partitioned. The standard library client never bulk downloads volumes.