The Quantumograph: A Discrete Ontology of Spacetime and the Empirical Accessibility of Quantum Gravity

Quantum gravity is traditionally regarded as a domain of mathematical physics devoid of direct empirical access. This paper proposes an alternative research program-the Quantumograph (TQGT) (Materov 2026) - in which spacetime is ontologically identical to a finite quantum graph, while continuum notions (metric, fields, time) are strictly emergent. I argue that this program possesses excess empirical content: its central predictions are testable on existing cryogenic quantum processors, thereby relocating quantum gravity from speculation to experimental science. Philosophical analysis reveals ontological consequences: support for ontic structural realism, the constitutional finitude of the Universe, the dynamic nature of time, and two fundamental theorems on the absence of asymptotic chaos and computational reducibility. A comparison with string theory, loop quantum gravity, and the Fredkin–Wolfram–Lloyd digital-physics tradition locates the program's unique status as a falsifiable digital structuralism.