CASMI26 private mass-only candidate pool

Private helper dataset for the owner’s CASMI26 BASE-02 CPU kernel. It contains the 274,195 scorer identities represented by competition training structures, representative SMILES, and RDKit exact neutral masses. At inference, the kernel converts each test precursor/adduct to neutral mass, selects candidates within ±10 ppm, and orders candidates by minimum absolute ppm error across the molecule's spectra (identity as deterministic tie-break).

The mass table is a derived competition artifact, not a public/reference-spectrum library. Keep this dataset private and do not redistribute it to nonparticipants. Provenance and the compressed-file SHA-256 are in mass-only-manifest.json.