AxoDen Micro-Grid Safety (Grid Flight Recorder): Deterministic Actuation Verification and Evidence Architecture for Cyber-Physical Control This manuscript specifies AxoDen Micro-Grid Safety v2, a deterministic verification-safety-recovery (VSR) control and evidence layer for microgrid actuation. The central architecture is the Grid Flight Recorder: analogous to an aircraft black box, it transforms the audit layer from a passive logging service into an active, deterministic safety gate that survives power loss and produces replay-verifiable evidence artifacts. The design addresses two structural vulnerabilities in conventional write-ahead audit architectures that remain unresolved in standard ICS practice: the God Key Failure, where a single cryptographic root can be extracted to forge a perfect audit trail, and the Async Ingestion Failure, where event storms during grid faults exhaust shared audit buffers and blind the very layer needed most. These failure modes are eliminated through multi-root attestation and Coprime-Factor Security (CFS) isolated ingestion transports respectively. The output contract is procurement-ready and replay-verifiable: CAR records and Replay Packs enable independent third-party re-verification of every enforcement decision. Regulatory alignment is provided against NERC CIP, IEC 62351, and IEC 61968/61970. Three deployment tiers (Bronze, Silver, Gold) define an interoperability path across heterogeneous DER stacks. This record is published for prior-art disclosure and academic review under restricted access. All rights reserved. Commercial use requires a licence from Luminesce Limited (UK). Implementation-specific parameters, thresholds, and deployment artefacts are intentionally omitted.
Erkan YALÇINKAYA (Wed,) studied this question.