Two-Body Validation of Solution B as the Dominant Kuiper Cliff Perturber: ATMAN v5.0 Paper IV

(Abstract) We present a two-body validation test for the candidate solutionsidentified in Paper III of this series. Simulations including bothSolution A (2.5 M⊕, a=100 au) and Solution B (6 M⊕, a=75 au)confirm that Solution B is the dominant perturber responsible forthe Kuiper Cliff morphology, with a two-body combined score of 0.586(−2.3% relative to the single-body reference). The three-bodyscenario (Erebo + Solution A + Solution B) is ruled out.The control-run anomaly (R_max_control=0.6446) is resolved byadopting the depletion proxy as the primary discriminant metric.SHA-256 of simulation output: 027f47017a1f32cacca31ecf8517396bda8eade3dce685d0d510c03554b5bf13.This is Paper IV of the ATMAN v5.0 series. Author: Ariel Fernando Martini, Buenos Aires, Argentina (2026).Contact: ariel_martini_3@hotmail.com