"Evolving Tully-Fisher Normalization as a Test of a Cosmologically Anchored Acceleration Scale"

If the acceleration scale governing galaxy rotation curves evolves with the universe’s expansion, galaxy rotation velocities should be systematically faster at high redshift, not because of more mass, but because a₀ was larger then. The prediction: v_TF(z)/v_TF(0) = (H(z)/H₀)^{1/4} No additional free parameters beyond ΛCDM. Testable with existing JWST kinematic programs. A descriptive comparison against nine published high-redshift measurements shows the constant-a₀ prediction consistently undershoots observed velocities across all nine redshifts. A definitive test requires a homogeneous JWST survey of N ≥ 50 galaxies per redshift bin.