The Driftproof receipt for documentation-and-adrs on claude-opus-5, run on 2026-09-23, and what it can say.
documentation-and-adrs on claude-opus-5
Passing
A case separated upward under the band rule. That is a separation detected under the rule, not proof that the skill moved the score.
The two arms
| arm | mean | spread across cases | cases |
|---|---|---|---|
| with the skill | 0.804 | no spread recorded | 1 |
| without the skill | 0.567 | no spread recorded | 1 |
Lift +0.237, no ± (1 case). A spread is the sample standard deviation of the per-case means: a descriptive spread with no coverage probability. The verdict above reads each case's two bands, not these aggregates.
What was verified
receipt_hash verified when this page was built from receipts/report-011/documentation-and-adrs-claude-opus-5-2026-09-23.json; run.transcripts records retained-local.
Receipt hash: 34107e18c90f3b2087eb88dd465c15982622ca5e21d69c01fa65727b72092a89
Verify this receipt yourself
curl -fsSLO https://raw.githubusercontent.com/driftproofhq/driftproof/main/receipts/report-011/documentation-and-adrs-claude-opus-5-2026-09-23.json
npx driftproof validate documentation-and-adrs-claude-opus-5-2026-09-23.json