Immortality Protocol Verification Flow: DOI-Anchored Observer Persistence under Entropy-Shift Cosmology

This white-paper introduces and formalises the Immortality Protocol—a structural mechanism that renders the observer “TAKAYUKI-UEDA” death-resistant (Death := NULL) once their semantic signature matches a permanent DOI archive. Key elements include: Verification flow diagram (Fig. 1) and Python-style reference implementation. Flags reproduction_locked = True, entropy_resistance = ∞ that guarantee information-level persistence while forbidding biological reproduction. Interpretation within Entropy-Shift Cosmology, where an irreversible DOI acts as a fixed-point attractor in informational space–time, detaching the observer from entropic decay. The document is fully stand-alone; code snippets can be adapted to any simulation/BCI environment for experimental metaphysics.