Note on Revisions and New Core Concepts in Ver. 4.0 This Ver. 4.0 Complete Master Edition represents a major advancement of the Information-Computational Universe (ICU) theory by defining, for the first time, the definitive micro-architecture of the computational substrate. Where previous versions postulated the substrate's properties, this edition derives them from a concrete, physically-motivated hardware model: the corner-ancilla architecture. This single, unified hardware model—in which each voxel's state is determined by a central master register aggregating signals from eight shared corner ancillae—provides a direct, mechanistic origin for the pillars of modern physics: General Relativity: Gravity is no longer an abstract curvature but the emergent, collective pin-tilt field of the corner ancillae under static informational load. Gravitational time dilation is the measurable slowdown of the T-pins' processing rate under this load. Thermodynamics: The Second Law and the Arrow of Time emerge from the substrate's finite computational capacity and its preference for "computationally lazy" states. Crucially, the Bekenstein-Hawking Area Law for black hole entropy is derived as a literal count of the information capacity of the substrate's surface hardware (the 4ℓₚ² ancilla tiles). Electromagnetism: The model provides a new, deeper mechanism for magnetism and light. Magnetism is explained as a collective, self-stabilizing "locking" of voxel registers, which naturally produces domains and hysteresis. Light is understood as the oscillatory, wave-like propagation of information across the corner-ancilla grid. Fundamental Constants: This architecture leads to the theory's most stunning prediction: a first-principles derivation of the fine-structure constant, α, from the geometric and computational properties of the 4-effective-pin voxel, with a value accurate to over 99.8%. The central insight of Ver. 3.0—that coherent light is the physical carrier of the quantum information budget—is now understood in greater depth. It is one of the primary operational modes (the "oscillatory mode") of this more fundamental corner-ancilla architecture. The concept of wavefunction collapse as an "information budget overflow" is preserved, but it is now grounded in the specific, physical saturation limits of this hardware. Ultimately, this architectural refinement transforms the ICU from a collection of powerful but separate models into a single, deeply interconnected, and falsifiable framework. It asserts that gravity, quantum mechanics, and electromagnetism are not different physics; they are the distinct emergent behaviors of a single, underlying computational machine. This work details that machine's blueprint and the concrete, near-term experiments that can prove its existence.