Proof. continuous correctness audit The register ↗

Every claim on this page comes with proof. So will every claim in your codebase.

Most marketing can't say that. Neither can most codebases.

seven claims ↓
CLAIM 001

Your software makes promises nobody ever wrote down.

EVIDENCE
46%

of developers distrust the accuracy of AI-written code — 33% trust it. Stack Overflow survey, 2025

90%

of teams use AI to write code. 30% trust what it writes. DORA, 2025

The gap between those numbers is where unwritten promises live.

signed · a named reviewer
CLAIM 002

We can dig them out of your code.

EVIDENCE

recovered from code · commit history · tickets — 123 promises recovered and signed on our first public audit

check it yourself ↗
signed · a named reviewer
CLAIM 003

We can prove your promises don't contradict each other.

EVIDENCE
Whenever parsing fails, the parser shall return an error and shall not modify the input buffer.
NO CONTRADICTIONS · machine-checked
how

Requirements are written in FRETish, a NASA requirements language, and checked by the Kind2 and Z3 solvers for consistency, realizability, and vacuity.

check it yourself ↗
signed · a named reviewer
CLAIM 004

We can tell you how many tests are enough.

EVIDENCE

⚠ worst case: silent data loss
⚠ worst case: crash on bad input

situations to cover: 14 (illustrative slice — the real number is computed per requirement)

how

MC/DC condition coverage — the avionics standard — measured in eleven languages; per-requirement hazard analysis asks what the worst failure would be.

signed · a named reviewer
CLAIM 005

Bugs we close stay closed.

EVIDENCE
F-001 unguarded negative index → panic · lived at eight call sites · closed the same day · pinned on every release since
MISS-001 silent data loss in Set() · closed, family swept · pinned forever

Every fix becomes a permanent test. The class dies, not the ticket.

check it yourself ↗
signed · a named reviewer
CLAIM 006

We are wrong sometimes. We say so, in public, with our name on it.

EVIDENCE

MISS-001 escaped our audit with 100% coverage on the affected code. A user caught it. We published the full postmortem — what we missed, why, and the requirement that now prevents its whole family.

An audit firm that only shows you its wins is asking for faith. We don't ask for faith.

check it yourself ↗
signed · L. Bugaev
CLAIM 007

One component. About four weeks. A fixed fee, agreed before we start. Then it runs in your CI — and keeps running if we part ways.

EVIDENCE
Fixed feeagreed up front
One componenta real slice, not a survey
~4 weeksscoped before we start
Yours to keepruns in your CI without us
signed · the practice

this page · claims: 7 · with evidence: 7 · asking for faith: 0 exit 0

Make us prove it.

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