CAIN-42 CAIN StudioProduct 3 · the attach
Fix + Prove — $500–$2,500 per fix
Ship the patch and prove it: the test fails on the old code and passes on the new one, signed.
What it is
We ship the patch and prove it: an independent test fails on the old code, passes on the new code, and the whole record is signed and re-runnable. It is sold to a client who already has a finding — usually from the review.
Who it is for
- An existing review client with a finding they need closed.
- A team that cannot ship a fix without evidence for their customer.
- A vendor whose buyer asked “show me it is fixed.”
What they get
- The patch, in their code.
- An independent test that fails on the old code and passes on the new.
- A signed record and a verifier.
- A short note they can forward to their buyer.
Build a quote
Total: $1,500
How to sell it
“The review found four issues. Want me to fix and prove the first one? The test fails on your old code and passes on the new; you get the verifier. $1,500 for this one. If it doesn’t verify, you don’t pay.”
Pricing
| Size | Price |
|---|---|
| Small, one file, one test | $500 |
| Medium, a few files | $1,500 |
| Complex, cross-module | $2,500 |
Objections
“We can fix it ourselves.”
Then you are both the claimant and the verifier. We remove that conflict and give your buyer something they can re-run.
“Why charge for a fix?”
You are buying the proof, not the diff. The diff is the commodity; the re-runnable evidence is the product.
Delivery checklist
Honest limits
A proof covers the contract and the tests we ran. It is not a proof that the whole system is safe. The report states exactly what was checked.