The Theorem of Time (TTU): How Time Became an Object of Physics

In classical physics, time was a parameter; in quantum physics, a background; in general relativity, a coordinate. But what if time is a substance? The Temporal Theory of the Universe (TTU) proposes a radical shift: all physical phenomena — from mass and interactions to wormholes and CP violation — emerge from the phase structure of the time field $$\rho_T(x,t)$$.This article explains how TTU completes the journey started by Einstein, transforming time from a silent parameter into an active object of physics. We explain how antitime eliminates singularities, how cooling can reduce mass, and why causality is not absolute but a phase state.TTU is not just a theory. It is an ontological reconstruction of physics, open to experimental verification and philosophical reflection.Keywords: temporal theory; TTU; ontology of time; phase field; antitime; emergence; mass as a gradient of time; CP violation; quantum foam; singularities; ontological reconstruction; experimental verification; philosophy of physics; time Lagrangian; temporal substance