# 9 PHC — 9-Point Hallucination Calibration

- **Event:** [Meta Global AI Developer Hackathon](https://cerebralvalley.ai/e/meta-ai-developer-hackathon)
- **When:** Oct 26, 12:00 PM – Nov 4, 9:00 PM (EST)
- **Where:** Online
- **Team:** [Richard Vigslist](https://cerebralvalley.ai/u/NuviraTech)
- **GitHub:** https://github.com/NuviraTechnologies/9phc
- **Demo video:** https://drive.google.com/file/d/18_SgE3CX7RfEjW5sRDV9k8_WKOOMuAeS/view?usp=drivesdk
- **Gallery:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/377

9 PHC — 9-Point Hallucination Calibration

A post-research audit program that runs every checkable claim in a finished piece of AI-assisted research through nine verification checks and returns each claim Verified, Corrected, or Held — unverified, with receipts.

Paste in a finished draft or report. 9 PHC extracts every checkable claim and checks: source existence, source fidelity, alias sweep, right-level check, secondary sweep, own-files sweep, numbers recomputed three times in deterministic code, names and IDs letter-checked in deterministic code, and an adversarial pass in a fresh context whose job is to kill the claim. Sources are peer-reviewed or primary only; registries (Crossref, DataCite, Open Library, OpenAlex, Semantic Scholar) are read before any model judges anything.

What was pre-existing: the idea only — conceived the week before the event. No code existed before the October 26 kickoff; everything shown was built during the event.

Live record: scores 6/6 on the planted-defect sets across all three demonstration briefs; caught an invented citation and an invented tablet catalogue number cold on an unscripted brief; zero false corrections in its last five runs. Full record: docs/RUN-RECORD.md in the repo.

## More from Meta Global AI Developer Hackathon

- [EcoNest Systems](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/374)
- [Pistis Sophia](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/375)
- [Toru's Team](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/376)
- [Form M Copilot](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/378)
- [8bitvapor](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/379)
- [Orbital](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/380)

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