SRP: A Deterministic Governance Replay Protocol for Responsibility Traceability in High-Risk Systems

This paper introduces the Sovereign Responsibility Protocol (SRP), a deterministic governance replay protocol for verifying whether high-risk governance decisions remain procedurally reconstructable under pre-committed parameters and total-injective responsibility mapping. SRP models governance replay as G = (I, R, φ, A), where I is an immutable input trace, R is a pre-committed parameter registry, φ is a deterministic governance evaluation function, and A is a total and injective accountability mapping. The contribution is protocol-layer rather than policy-layer. SRP does not prescribe decisions, assign blame, determine liability, optimize operational outcomes, or override institutional authority. Instead, it verifies replayability, registry integrity, deterministic state evaluation, accountability mapping, and governance vacuum detection. The paper includes a finite-state replay verification machine, registry lock and accountability uniqueness invariants, deterministic replay proof sketches, a reference implementation model, a synthetic benchmark with tampering and vacuum-detection cases, and a positioning analysis against event sourcing, blockchain audit trails, BFT logs, process mining, and safety-critical logging.