This record defines QDL–SO10–1, a fixed SO (10) -compatible benchmark in the Quantized Dimensional Ledger grand-unification sequence. The release is a benchmark-definition package, not a complete global scan. It includes the manuscript and machine-readable tables specifying the breaking chain, threshold spectrum, running intervals, matching corrections, neutrino-sector values, electroweak reference inputs, benchmark reconstruction map, and proton-decay exposure channels. The purpose is to make the QDL–SO10–1 benchmark citable, inspectable, and extensible for later numerical stress testing. The benchmark is defined by the breaking chain SO (10) → SU (4) C × SU (2) L × SU (2) R → SU (3) C × SU (2) L × U (1) Y, with MU = 1. 00 × 10¹6 GeV, MI = 4. 70 × 10¹3 GeV, αU^−1 = 25. 6, a seesaw-compatible right-handed-neutrino hierarchy, declared heavy-threshold spectrum, two-loop running blocks, matching corrections, and proton-decay exposure channels.
James D. Bourassa (Fri,) studied this question.