The phenomenon of Dark Matter (DM) in galaxies and clusters is addressed by the **Unified Causal Principle (UCP)** as a **geometric correction** required for Causal Homeostasis, rather than a non-baryonic particle. This mechanism is governed by the **Causal Coherence Constant (κcrit) which sets the acceleration threshold (AUCP) below which the spacetime must distort its local geometry to avoid a catastrophic causal collapse, exemplified by the gravitational singularity of a black hole. We derive the Causal Interpolation Function (µUCP) from first principles, successfully predicting the observed flat galactic rotation curves. Numerical results confirm that the velocity difference attributed to DM is entirely accounted for by the UCP’s correction factor, establishing MOC as a thermodynamically mandated consequence of the causal structure of the universe. 1 Introduction: The Causal Problem of Gravitational Collapse The standard cosmological model (ΛCDM) requires the existence of a non-baryonic component, Dark Matter (DM), to explain the observed rotation speeds of galaxies. This paper applies the Unified Causal Principle (UCP) framework, which has already provided a quantifiable solution to the Hubble Tension [1] and the quantum measurement problem [2], to this final major enigma. The UCP asserts that the universe operates under a strict Thermodynamic Causal Constraint to maintain a global entropic balance ( ˙Snet ≈ 0). In this context, the existence of DM is the necessary defense mechanism against the gravitational conditions that lead to a Causal Singularity. The collapse into an **Agujero Negro** is the point where the Causal Homeostasis fails entirely miguel_percudani@yahoo.com.ar (+5411) 2923463661