The Projective Dynamic Logo (PDL) programme derives the structure of physical reality from four axioms on finite signed graphs, without presupposing spacetime, particles, or fields. This document resolves OP-B, the last remaining structural gap in the gravitational branch of the PDL causal chain. The hierarchical filter factor k = 0. 921716, which connects the geometric leakage parameter ₆₄₎₌ = 329/10087 to Newton's gravitational constant G via 18 coherence filters, is derived analytically from axioms C1–C4 without any free parameter. The key result is k = (1-₆₄₎₌) (rₕ₀₋/Rₓ₎ₓ) ^1/18, yielding k = 0. 92172 with a residual of 0. 4 ppm relative to the CODATA 2022 experimental value. With OP-B resolved, the complete causal chain C1–C4 → K₄ → proton quintuplet → ₆₄₎₌ → G → G is established as a sequence of unconditional theorems, with m₈ₒ₎ = md - mᵤ as the sole external input. Document D44 of the PDL Framework.
Cédric Laubscher (Tue,) studied this question.