Radial Coherential Dynamics (RCD) has developed over eighteen papers into a unified theoretical framework deriving spacetime, gravity, particle physics, and cosmology from a single scalar coherence field C(x,t) and one universal parameter α ≈ 1.3×10⁻⁴. This paper translates the full theoretical architecture into direct observational predictions. We present the complete Prediction Matrix of RCD: a consolidated set of quantitative predictions spanning gravitational wave echoes, the Hubble tension, dark matter properties, proton stability, neutrino-related observables, and Standard Model gauge couplings. All predictions follow from the same field and the same parameter, with no continuously adjustable free parameters. The paper emphasizes cross-domain consistency as the decisive test of unification: success or failure in one observational sector directly constrains the entire framework. Explicit falsification criteria (“hard kill switches”) are defined, including WIMP detection, proton decay, and incorrect gravitational-wave echo amplitudes. Additional “soft tests” are identified where experimental limitations may remove predictive leverage without falsifying the theory outright. This work serves as the definitive interface between RCD and experiment, providing a transparent roadmap for testing the framework across gravitational physics, cosmology, dark matter, and particle physics in the 2025–2030+ observational era.