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Assurance tooling: proving a number instead of asserting it

A frozen benchmark, determinism gates, and lineage for every run.

SectorIndependent build
Period2026
RoleDesigner and sole engineer
Nonethird-party services used
Re-derivableevery headline number
By constructionoutput valid, not by luck

Context

Where a decision moves into a system, the organisation has to be able to re-derive the result — for an auditor, a regulator, or its own confidence. Most tooling cannot.

Intervention

Built an evaluation harness around a frozen document manifest, with determinism and reproduction gates that fail rather than drift, and lineage-grade run logs.

How it was proven

The extraction pipeline it governs achieves 100% schema compliance at 18.9 tokens per second on owned hardware, repeatable run over run.

Outcome

  • Any headline number can be re-derived rather than trusted.
  • Output is valid by construction, not by luck.
  • Nothing is sent to a third-party service.

Why it matters

If you are going to automate a decision, you need to be able to show your working. This is the tooling that makes that possible.

What this does not claim

Independent build, not a client engagement.