Corner/Check
FAIL-CLOSED FIGHTER-SAFETY CLEARANCE
LIVE SYSTEM

The agent that
refuses to guess.

A Slack agent for fight-operations teams. It checks cross-jurisdiction suspensions and return-to-competition windows over source-cited commission records, corroborates against a live boxing record feed, and refuses to clear when fighter identity is statistically uncertain. Every decision lands in a tamper-evident, hash-chained audit ledger. A human always makes the final call.

The proof, run live

The clearance engine's suspension-window logic is proven equivalent to an independently written safety specification over all dates and intervals, by the Z3 theorem prover. Not at build time. Right now, on this server, when you click.

Three locks, no single point of trust

01Proven rules

The rule engine's window logic is Z3-verified against an independent safety spec: an active suspension can never produce CLEAR. The proof found and killed a real fail-open bug before launch.

02Certified identity

The match threshold is conformally calibrated on thousands of query variants built from the real fighter table. Two plausible candidates force a human pick. Two real fighters named Bruno Silva is not an edge case here; it is the point.

03Evidence or nothing

Verdict cards render only from the deterministic engine, never from model prose. A live second source can tighten a verdict, never loosen it. The ledger is append-only and HMAC-chained; you can export it to a Canvas and hand it to a commission.

What it does all day

In Slack: ask about one fighter or paste a whole fight card; every bout lands on one board, banded CLEAR, DO NOT CLEAR, or NEEDS PICK with the blocking record cited. Click into the live Z3 proof or the hash-chained audit trail from any verdict.

> Check this card in Texas: Junior dos Santos vs Curtis Blaydes, Bruno Silva vs Brad Tavares

On its own: a daily roster monitor re-checks every suspension window (the failure that killed Tim Hague was a lapsed window nobody re-verified) and pushes a deterministic digest to the ops channel. No model decides or phrases an alert. Quiet days send nothing.

Honestly scoped: curated, source-cited records, not an exhaustive registry. A CLEAR means no recorded suspension matched; commissions remain the source of truth.