Headline results

The latest frozen benchmark, physical-hardware evidence, and precise evidence labels.

Latest frozen QSC-Bench confirmation: retained-residual and fixed-window members completed 210 of 210 registered simulator runs. In the primary scale ladder, both completed 30 of 30 seeds at every width through 65,536 controls with a flat acquisition exponent; the retained median was approximately twelve acquisitions.

Development extension: both confirmed five of five runs at one million controls. This is development evidence, not a primary confirmation tier and not an independent community replication.

Physical hardware: the public archive includes a Rigetti Cepheus closed loop under software-commanded disturbance and static or ablation diagnostics on IQM and IBM hardware. These results do not establish native-drift compensation on a QPU.

Independent manuscript reference: a separate controlled-simulation ladder reaches one hundred million channels at one seed on the top rung. That range, plant, and implementation do not authorize a production switching rule at the hosted 4,096-control ceiling.