We present a complete derivation, from the Page-Wootters (PaW) mechanism, a equation of the TTE-EPR (Temporal Thermodynamic Entanglement – Einstein-Podolsky-Rosen) framework: Δt = tP × ΔS / η̃, where tP is the Planck time, ΔS is the entropy produced by the vacuum clock, and η̃ is an adimensional parameter characterizing the local processing rate of the quantum vacuum. The derivation proceeds in three stages. First, we show that the equation follows directly from the Page-Wooters (PaW) mechanism by identifying the quantum vacuum as the universal entangled clock, with the clock energy ε = EP × η̃. Second, we derive the cosmological evolution η̃(t) ∝ H²(t) from quantum field theory in curved spacetime via the quantum geometric tensor of the squeezed vacuum. Third, following Erker-Huber, we identify ΔS as the thermodynamic entropy cost of each clock tick, connecting the geometric phase of PaW with the irreversible entropy production required for measurable time. We demonstrate consistency with Heisenberg’s uncertainty principle, recover gravitational time dilation through η̃ = 1/√(–g00), and show that the quantum geometric tensor of the vacuum naturally unifies gravitational and gauge degrees of freedom as its real (Fisher information) and imaginary (Berry curvature) components, respectively. We demonstrate that the Berry connection of the vacuum, pulled back from the manifold ℳ = Sp(56,ℝ)/U(28) to spacetime, undergoes a dynamic reduction of its holonomy from U(28) to SU(3) × SU(2) × U(1) via a Coleman-Weinberg mechanism on ℳ, deriving the Standard Model gauge group without free parameters. Using the exact heat kernel on ℳ and the SO(5)/SO(4) sub-system triple, we derive a closed-form prediction for the Higgs mass, m_h = 123.8 ± 1.9 GeV (tree-level plus one-loop Coleman-Weinberg), and for the Higgs VEV, v* = 248.1 GeV (via marginal vacuum stability at three-loop order), both within 2.4% and 0.75% of the measured values respectively. Furthermore, this complete manuscript applies the fundamental framework to the current cosmological crisis. We demonstrate that the cross-epoch evolution of the vacuum clock rate induces a mandatory logarithmic correction to the effective expansion history. This differential relational aging naturally contracts the comoving sound horizon at recombination by the precise fraction required to shift the CMB-inferred expansion rate to exactly match local universe observations (H_0 ≈ 73 km/s/Mpc), without invoking Early Dark Energy (EDE) models. The framework strictly preserves the Etherington distance duality. This document serves as the foundational, full-length theoretical manuscript detailing the axiomatic derivations, macroscopic limits, and exact analytical partial derivatives for Fisher matrix analysis in standard cosmological pipelines.