Summary paper of the UCM observational test suite (Papers 14b-23). Tests UCM (Omegaₘ=0. 3166, w=-1, Omegab h²=0. 02246) against nineindependent cosmological probes: DESI DR2 BAO (13 pts), eBOSS DR16 BAO (15 pts), Pantheon+ SN (24 pts), DES SN5YR (1820 pts), Cosmic Chronometers (33 pts) — total N=1905, cumulative ΔBIC=+19. 3 (decisive evidence on Jeffreys scale). Three CMB tests: Planck 2018 acoustic scale at 0. 22sigma (CLASS), ACT DR6 w=-1 at 0. 6sigma, KiDS Legacy S8 at 0. 9sigma. All predictions from a single constant fcold=sqrt (2-pi/2). Companion letter to PRL submission es2026apr03₅52.
Norbert Prebeck (Sat,) studied this question.