Deponent
Research prototype
Govern an agent action before it runs, record allow or block, and recompute the decision evidence afterward.
Review DeponentCentennial Defense Systems
Evidence systems for actions that must be reviewed.
Centennial builds local-first software that records what an AI agent was allowed to do and turns investigative material into evidence another person can verify.
It doesn't answer. It testifies.
How the evidence travels
A decision should leave a path another person can inspect.
- Policy
- Action
- Record
- Verification
Products
Two public paths into the work.
Archivist
Review investigative material locally for core archive workflows, connect the evidence, and export a cited package with integrity metadata.
Explore ArchivistArchivist Sort
Live · $29 one-time
Local-first, review-first file cleanup for macOS: scan, review, quarantine instead of delete, roll back byte-verified. Every action receipted.
View Archivist SortTestify Challenge (AAAP)
Public · evidence published
A public adversarial challenge against the AAAP verifier: 54 commissioned attack cases across three passes — every break fixed and credited, the final pass unbroken. Evidence published in-repo.
Inspect the challengehonesty-gate
Source not yet published
A deterministic claim-vs-evidence checker that fails closed when a claim has no receipt. Built and tested; the source is not published yet, so there is nothing public to inspect until it is.
Read the glossary entryInspectable proof
Inspect the claim at the nearest public surface.
Centennial Defense Systems
Small company. Direct accountability.
- Founder
- CJ Chanhnourack
- Founder
- Company
- Colorado Springs, Colorado
- Founded 2026