Quantum Computers as Substrate-Interface Devices: Decoherence Anomalies as K-Kernel Stress Signatures

This paper is organized in three distinct layers, each with a different epistemological status. Readers are invited to evaluate each layer independently. Part I presents an observational case: quantum hardware, when operated far from equilibrium, produces a systematic cluster of anomalous physical phenomena, time crystals, exotic topological phases, thermal law violations, and measurable entanglement timescales. Each anomaly has a domain-specific conventional explanation. The structural observation is the cluster: these phenomena share a common operational boundary, appear conditionally at the same threshold, and were not predicted by the quantum computing performance narrative. Part II presents an empirical program: five pre-registered, falsifiable predictions derived from the structural observation that quantum processors operate on unresolved probability amplitudes rather than resolved states. The predictions specify what the operational boundary should look like if the anomaly cluster reflects physical structure rather than coincidence. Part III presents the Multi-Simulation Thesis as a candidate theoretical interpretation of Parts I and II. The K kernel, a proposed computational substrate underlying physical reality, is offered as the candidate explanation for why the boundary has the structure Parts I and II document. Part III is labeled as interpretation. Parts I and II are evaluable without accepting it.The 5Hz/200ms cross-registered prediction is an open empirical target. Researchers with access to relevant quantum coherence or gravimetric data are invited to correspond. bartolomeu.mst@gmail.com