CMB Record Consensus

A reproducible record-consensus diagnostic for redundant measurement products, demonstrated on a high-quality public test case: the Planck PR3 component-separated CMB temperature maps (Commander, NILC, SEVEM, SMICA). The diagnostic measures how quickly disagreement shrinks when redundant record channels are averaged (r̄, D(k)) and states exactly what that agreement licenses.

The deposit includes the frozen reproducibility package, the conversion re-execution artifacts that verify every published digit from public materials, and supplements enabling one-command end-to-end recovery.

What this paper does not claim. The agreement measured here licenses a consensus demonstration among highly redundant records (k_eff ≈ 1) — not an independence audit.

Keywords: CMB; Planck PR3; record consensus; redundancy; reproducibility.