Directional Coherence of Cosmological Anomalies Under the Glass Onion Theorem

The Glass Onion Theorem (GOT) proposes that the observable universe is a metastable crystallized geometric projection of a pre-dimensional, non-metric substrate S₀, governed by a density cascade operator D̂₀→₁ and stabilized by substrate osmotic pressure Λₒsm. We present the Jackson Cosmological Paradigm Observational Protocol (JCP-OBS-001), a preregistered multi-channel test of the GOT framework against eight independent cosmological anomalies (A₁ through A₈), including the CMB hemispherical power asymmetry, the Hubble tension directional bias, the >5σ quasar dipole mismatch, and the NANOGrav gravitational wave background anisotropy. We define the Ξw coherence statistic measuring the weighted directional alignment of anomaly vectors against the predicted Λₒsm pressure gradient. Under the GOT framework, these anomalies are not independent statistical outliers but correlated projections of a single underlying substrate geometry, predicting Ξw → 1. We demonstrate that no single-mechanism modification to ΛCDM can reproduce this correlated alignment without invoking exponential fine-tuning, whereas the GOT framework generates it as a geometric mandate. All predictions were preregistered under document ID JCP-OBS-001-G1-PREREG prior to data execution. Results, falsifiability criteria, and the GOT research program are presented.