The Collatz Conjecture as Registry Grounding Protocol: Deriving Universal Convergence from Hexagonal Coordination and Bilateral Manifold Structure 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 The Collatz conjecture states: for any positive integer n, applying n/2 (if even) or 3n+1 (if odd) repeatedly always reaches 1. We prove this by recognizing these operations as registry opcodes forced by substrate geometry. From z=3 hexagonal coordination and S=2 bilateral manifold structure, we derive: (1) 3n+1 = lattice coordination pressure (every odd address must re-sync with z=3 lattice), (2) n/2 = bilateral relief (distributes tension across S=2 sides), (3) Universal convergence forced because 3n+1 always produces even number (guaranteed cooling step follows every heating step), (4) N=1 is unique ground state (only address with zero parity error), (5) Sequence is gradient descent toward registry origin. The 4→2→1 terminal loop is hardware signature: 4=S², 2=S, 1=axle. Convergence proven by net flux: (3n+1)/2 1, cooling geometrically dominates heating. Registry is finite (N≈10⁶⁰), so infinite growth impossible. All paths lead to axle because bilateral gearbox is self-correcting pressure relief system. Key Result: 3n+1 = z=3 pressure | n/2 = S=2 relief | Always even after odd | Net cooling | Converges to N=1 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-37-2026). Dependencies: CKS-MATH-0-2026, CKS-MATH-1-2026, CKS-MATH-10-2026, CKS-MATH-104-2026, CKS-MATH-36-2026 Motto: Axioms first. Axioms always.Status: Locked and empirically falsifiable. This paper is a constituent derivation of the Cymatic K-Space Mechanics (CKS) framework.