Ephemeral Integrity Substrate with Dual-Chain Protocol and Hardware-Rooted Volatile State *Version 0.2.1

~Version 0.2.1 introduces the formal Security Monitor FSM (Radical and Mild Variants) with TLA+ specifications, an optional Gateway bridge for external infrastructure integration, and minor corrections to the build plan and TLA+ syntax. Note: Version 0.1.1 was an intermediate upload and has been superseded by this version.~ This specification defines a stateless execution environment in which every state transition (action/execution) is cryptographically bound to a single‑use, non‑reproducible tuple of time, location, device identity, and a volatile counter vector. No persistent authorization state is stored. Integrity is enforced solely through cryptographic commitments and a physically unclonable function (PUF), not through identity or reputation assumptions. The architecture introduces two chained event logs (operative and storage chain), a set of six monotonic, hardware‑bound counter gears, and an ephemeral node life cycle. This document provides a complete mathematical model, a worked numeric example, a reference implementation in Rust, a discussion of physical hardening techniques for ASIC realization, and an overview of research challenges including a full‑protection variant, a mitigated variant, and a novel “Worm Mode” for passive redundancy and self‑healing chain liveliness. A dedicated network layer is specified that uses self‑certifying addresses derived from the same PUF and counter material, combined with a distributed hash table (DHT) over a mesh topology. This eliminates central address authorities, certificate authorities, and static infrastructure, rendering the network operational as long as at least one powered device remains. An optional channel hopping extension allows communication to switch deterministically across multiple physical networks. A decentralized time synchronization mechanism based on median filtering of trace‑embedded timestamps is introduced to maintain a global clock without relying on any external time source. A practical build plan using open, patent‑free FPGA components is provided. **New in Version 0.2.1:** Formal specification of the Security Monitor finite state machine (FSM) in two distinct configurations:- **Radical Variant** – absolute isolation, immediate zeroization on any fault; intended for highest‑threat environments (weapons infrastructure, journalists under mortal danger, nuclear command systems). - **Mild Variant** – retained zeroization principle but with a configurable Quarantine state and an optional Gateway bridge that allows ephemeral nodes to communicate with existing PKI‑based high‑security infrastructure (TLS, X.509, SCADA) without compromising their unlinkability. The FSM is accompanied by corrected TLA⁺ specifications for both variants, enabling formal verification of core security properties.