Signed evaluation records
Every trade-routing flag, credit decision, and pricing override joins a SHA-256 hash chain as a signed record. Provenance is a query against the ledger — not a forensic exercise the week your examiner visits.
§01 · The Monday-morning scenario
It's the first Monday of the exam window. Your firm's quant desk routes a block-trade through the AI model at 09:14. By the time the examiner's letter lands in the GC's inbox, they want — by record — what score triggered the flag, which model version produced it, and whether the threshold that drove it is the same one in force last quarter. Plumbline captures all three before the request leaves the desk.
The scenario · 09:14 AM, Monday
What Plumbline captures
The examiner's questions all reduce to three artifacts. A FinServ pilot ships with all three wired up — so the replay, the walk-back, and the SOX / SEC compliance package come from the same source of truth, not three vendor portals stitched together the week the letter arrives.
Every trade-routing flag, credit decision, and pricing override joins a SHA-256 hash chain as a signed record. Provenance is a query against the ledger — not a forensic exercise the week your examiner visits.
Score distribution, calibration curves, and the threshold-violation incidents all flow into the same ledger. When quarter-end closes, the walk-back to the prior record is a single replay — the examiner walk-through is the replay, not a rebuild.
A pre-built evidence package your SOX §404 owner opens directly — ITGC audit-trail retention, change-management attestations, and logical-access scopes, each tied to the specific record that satisfies the control.
The pilot
The FinServ pilot is shaped around the model you already run — a trade-routing, credit-decision, or fraud-scoring model with one or two evaluators that don't need a full evaluation team to maintain. Register the model, and the first record lands in your ledger the same day.
We co-write the scope in week one: data surface, access scopes, retention window, examiner-read-only role, and the SOX §404 control rows your evidence package will satisfy. The replays are real-data, sixty days deep, before any contract is drawn up — so the examiner walk-through is, by definition, a replay of evidence you've already collected.
We'll never share your email. No marketing blast — only the next-step note when a slot opens. If your examiner window is already on the calendar, mention the date on the call.
Already running an evaluation surface? Email plumbline-ai-9@polsia.app with the model surface and we'll skip the waitlist.
§06 · Pricing
Get started in minutes — pick a pilot tier, point the SDK at one model, and the first signed record lands in your ledger the same day. Cancel any time before the first sixty-day replay review.