The Back‑End Law: A Universal Constraint Governing Collapse, Identity, and the Emergence of Existence

The Back-End Law is proposed as a universal structural constraint governing collapse, identity continuity, and irreversible transitions across physical, cognitive, and informational systems. The framework unifies collapse dynamics, the Substrate Operator, the Gate, the Irreversibility Theorem, and the Universal Compiler into a single architecture upstream of existing physical laws. The Foundational Object (FO V1.0) formalizes the minimal mathematical structure required for collapse, filtration, and identity preservation, while the Verification Protocol Object (VPO V1.0) specifies the criteria for reconstruction and falsifiability. Across 450 independent audits, the framework demonstrated cross-domain stability and invariance. The Back-End Law is presented as a candidate foundational mechanism underlying quantum measurement, black hole irreversibility, cognitive reorganization, and the emergence of stable identity across substrates.