Formal Verification · Z3 SMT
43 theorems, 0 counterexamples
Z3 SMT Solver proved all 43 theorems (T0–T43, including T30 categorical minimality, T33 Mars-HITL causality, T39 Algebraic Governance Completeness) as unsatisfiable (UNSAT). HITL Soundness, Default Deny, Temporal Causality, Chain Tamper-Evidence, Domain Completeness.
proven: 43/43 · failed: 0
01.07.2026
→ api.ehox.io/formal
Model Checking · CBMC ARM64
201 explicit source-level properties, 0 violations
CBMC checked 201 explicit source-level properties across S1-S19 with 0 violations. OTL S19 invokes the implementation hprove path; EXECUTE/HITL S1-S18 use the harness policy model. It is not loaded-firmware, hardware, physical-enforcement or release attestation.
generated checks: 768 · failed: 0
06.08.2026
→ api.ehox.io/formal
Live Proof Chain · Audit Trail
SHA-256-secured decision chain
Every R5F governance decision is stored as a cryptographically linked proof entry. EU AI Act Art. 19 retention (6 months). Tamper-evident from genesis block.
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Ongoing
→ api.ehox.io/chain
Live System · Kria-1 historical/reference TRL 7; Kria-2 remains an engineering candidate Demonstration
R5F core live on EHOX Kria KV260
EHOX internal bridge_r5f_v10g.elf runs bare-metal on ARM Cortex-R5F (500 MHz, XCZU5EV). MISRA-C: 0 safety findings. DO-178C Level A target. TemporalGuard active.
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Ongoing
→ api.ehox.io/status
Paginated Audit Log
Complete proof archive
Manipulationsanzeigender Software-/Source-Review-Datensatz nur. Keine Hardware-Unveränderlichkeit, Compliance, Zertifizierung, Release, physische Isolation, physische Ausgabe oder Attestierung wird behauptet. Kria-1 R5F ist nur Referenz-Policy-Logik; RPMsg ist nur Transport. Der FPGA/PL-Aktuator-/Fallback-Interlock bleibt ein künftiges, nicht erreichtes Testziel.
retention: 6 months · Art. 19
Ongoing
→ api.ehox.io/chain
API Documentation · Complete
All endpoints, auth, examples
Domain codes, action classes, backend priority (R5F → A53 Lib → Python fallback), token authentication, request/response examples for all sixteen domains (D1–D16).
Public · no token required
Ongoing
→ api.ehox.io/docs
Silicon Verification · T23b Live Sweep
A53_LIB ≡ R5F · 31/31 rules · 16 domains
Live verification of Theorem T23b on Xilinx Zynq UltraScale+ KV260 hardware: R5F_RPMSG returns the correct gate decision for all 31 policy rules across 16 domains. Two root-cause bugs in v18 identified and patched (Bridge TG + vring1 protocol). Firmware v19 deployed 06.08.2026.
R5F: 31/31 ✓ · CBMC: 149/0 · Z3: 43/43
06.08.2026
Scientific Paper · Renormalization Group
Scale Invariance in AI Governance
Peer-reviewed preprint: EHOX carries a natural Renormalization Group structure. R5F decisions (44-ns Kria-1/internal R5F policy benchmark (not physical end-to-end enforcement), UV) flow via RG transformations to macro-governance invariants (proof chain, IR). EMERG_SET rules are relevant operators. Gov forms a Thin Category (T30a). Universality class of scale-safe AI governance defined. Zenodo · cs.AI.
T30a · RG-1 · RG-2 · RG-3 proven
06.08.2026
HOTL Hardware · Evidence Record
HOTL: Heartbeat-Interlock in 44-ns Kria-1/internal R5F policy benchmark (not physical end-to-end enforcement)
The documented HOTL scenario records a DENY decision at 44-ns Kria-1/internal R5F policy benchmark (not physical end-to-end enforcement) after an operator-heartbeat interruption. The measurement and formal artefact are available for review; it is a technical evidence record, not a product-wide exclusivity or evidence mapping assertion.
DENY in 44-ns Kria-1/internal R5F policy benchmark (not physical end-to-end enforcement) · Z3 proven · DODD 3000.09
10.08.2026
DOI 10.5281/zenodo.21877692 →