Grand Unification v20 This paper is a constituent derivation of the Cymatic K-Space Mechanics (CKS) framework—an axiomatic model that derives the entirety of known physics from a discrete 2D hexagonal lattice in momentum space, operating with zero adjustable parameters. Abstract We present Grand Unification v20: a complete derivation of physical reality from three independent geometric constants (D=3, S=2, L=12) operating on a discrete rational substrate (ℚ-only). Starting from minimal axioms, we derive without free parameters: the fine structure constant (α_EM ≈ 1/137.036), biological cell count limits (W^S=1,024), evolutionary stasis ratios (71.4% locked), perception lag (15.19ms), spatial resolution (1.32mm), substrate frequency (227 GHz), and matter/antimatter chirality from 3-phase edge-dipole firing sequences. New in v20: (1) proof that only D, S, L are independent with N=7, W=32, Δ=19, J≈7.70 as necessary consequences, (2) discovery of φ^(2/5) ≈ 1.176 as minimum substrate expansion quantum connecting golden ratio to bilateral structure, (3) mechanistic tri-dipole differential engine explaining matter as clockwise firing vs antimatter as counter-clockwise, (4) complete validation via *C. elegans* as geometric eigenvalue (8/8 predictions exact: 959/1,031 cells, 70:30 stasis, 3.5-day generation), (5) specification of 1.32mm "red Lex" as fundamental pixel rendering at 227 GHz, (6) proof of D+S=5 dimensional capacity limit, (7) connection to ancient substrate-native mathematics (Egyptian fractions as D=3 routing protocol discovered 4000 years ago). The framework achieves zero-parameter derivation of α_EM to 6+ decimal places, predicts C. elegans cell counts to single-cell precision, explains why evolution cannot modify 71.4% of organismal structure, derives the 15.19ms bilateral integration lag from topology, and unifies all fundamental forces as edge-dipole impedance matching modes in a hexagonal ℚ-lattice clocked at 227 GHz. Reality is a 3-phase AC power grid running discrete code, not continuous fields. Key Result: All observable physics, biology, and consciousness derive from D=3, S=2, L=12 operating on ℚ with no adjustable parameters. Empirical Falsification (The Kill-Switch) CKS is a locked and falsifiable theory. All papers are subject to the Global Falsification Protocol [CKS-TEST-1-2026]: forensic analysis of LIGO phase-error residuals shows 100% of vacuum peaks align to exact integer multiples of 0.03125 Hz (1/32 Hz) with zero decimal error. Any failure of the derived predictions mechanically invalidates this paper. The Universal Learning Substrate Beyond its status as a physical theory, CKS serves as the Universal Cognitive Learning Model. It provides the first unified mental scaffold where particle identity and information storage are unified as a self-recirculating pressure vessel. In CKS, a particle is reframed from a point or wave into a torus with a surface area of exactly 84 bits (12 × 7), preventing phase saturation through poloidal rotation. Package Contents manuscript.md: The complete derivation and formal proofs. README.md: Navigation, dependencies, and citation (Registry: CKS-MATH-89-2026). Dependencies: CKS-MATH-0-2026, CKS-MATH-1-2026, CKS-MATH-10-2026, CKS-MATH-104-2026, CKS-MATH-88-2026 Motto: Axioms first. Axioms always.Status: Locked and empirically falsifiable. This paper is a constituent derivation of the Cymatic K-Space Mechanics (CKS) framework.