Speculative conceptual note that unifies two phenomena under the UAT/UCP framework: the collapse of signal coherence (jitter and silence) when the causal load approaches the Ivancho limit (κ_crit = 4.978), and a reinterpretation of Hawking radiation as the decoding of structured information (Bit 1) back into the unmanifested substrate (Bit 0) when an event horizon forces the causal membrane into the Thermodynamic Overdrive regime. Both effects are governed by the same constants — R_geom = 0.2792, k_early = 0.967, and the 7% thermal calibration margin — without introducing new free parameters. The model predicts a ~7% excess in the evaporation spectrum of light primordial black holes (masses ~10^10–10^12 kg). A Monte Carlo simulation (500 realizations) illustrates the signal collapse, and a separate Python script compares the standard and UAT-corrected Hawking temperatures. This note is a theoretical exploration, not an empirical validation, and includes an epilogue reflecting on the limits of what any metric can describe.