[01] hero · sha:5302cf3deb77 · build:2026-04-21T09:01:57.630Z
It doesn't answer. It testifies.
See what ships →[02] ships · sha:5302cf3deb77 · build:2026-04-21T09:01:57.630Z
Every product enforces the same three invariants in code: fail-closed, audit-first, deterministic. All shipped products are available today.
[ship-01]
Local-first investigative evidence intelligence. Content-addressed, tamper-evident archives with chain-of-custody export and a standalone verifier. macOS. Zero network calls during operation. v6.1.0.
Personal $49 · Professional $99 · Investigator $249/year
[ship-02]
Process governance for AI workloads on a single machine. Port, GPU, and repository collision prevention with a hash-chained audit log. Local only. Zero configuration.
pipx install fleet-watch
[ship-03]
Deterministic, fail-closed AI code governance. Git pre-commit and CI-diff gates that emit tamper-evident evidence logs. CMMC-scoped compliance support.
pip install sworncode
Buddy Core — Behavioral regulation runtime. Operator physiological and cognitive state as a governed input to system safety. Phase 1, internal.
Agent Civilization — Empirical study of governance primitives in multi-agent populations. P1 paper under submission for NeurIPS 2026.
SafetySpine — Fail-closed governance kernel for autonomous drone systems. SBIR-track; Navy FY26 topic selection in progress.
[03] believe · sha:5302cf3deb77 · build:2026-04-21T09:01:57.630Z
Most software is built on the assumption that the network is there. Centennial Defense Systems is built on the opposite assumption.
The environments that need governance most — a disconnected operator on a ship, an aircraft at 35,000 feet with no WiFi, a forward-deployed system where calling the cloud for policy is not an option — are the environments where cloud-dependent security models fail.
So every product is built to run without the network. Policy is evaluated locally. Evidence is captured locally. Decisions produce receipts. Uncertain states halt instead of guessing.
Receipts prove what happened under policy. They don't outrank it.
[04] who · sha:5302cf3deb77 · build:2026-04-21T09:01:57.630Z
CJ Chanhnourack. Founder, Centennial Defense Systems, Inc. United States Marine Corps veteran — aviation supply, Hawaii. Exercise science at the University of Colorado Colorado Springs. Started writing software in December 2025. Founded 2026. Solo-operated. CAGE-registered Delaware C-Corp. Colorado Springs, Colorado.
Writing: The Internal OS on Substack — cjchanh.substack.com
Code: github.com/cjchanh
[05] engagements · sha:5302cf3deb77 · build:2026-04-21T09:01:57.630Z
Product inquiries, engagement proposals, SBIR partnership discussions: cj@centennialsystems.com
Archivist direct purchase: archivist.tools
No intake form. No automated scheduler. One human on the other end of the address above.