The Driftproof receipt for git-workflow-and-versioning on claude-opus-5, run on 2026-09-23, and what it can say.
git-workflow-and-versioning on claude-opus-5
Not enough draws
Not enough draws to conclude at this effect floor.
Draws needed: no draw count at these spreads (case commit-message-conventional-type: the two arms' spreads sum to 0.278, at or above the 0.05 floor).
The two arms
| arm | mean | spread across cases | cases |
|---|---|---|---|
| with the skill | 0.861 | no spread recorded | 1 |
| without the skill | 0.765 | no spread recorded | 1 |
No lift is stated for a state that did not measure one. 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/git-workflow-and-versioning-claude-opus-5-2026-09-23.json; run.transcripts records retained-local.
Receipt hash: 2ba4ef175d7f1caf6e54b5cce6f6f24362d4ae0c4976a4b0b821ea26f6cb9488
Verify this receipt yourself
curl -fsSLO https://raw.githubusercontent.com/driftproofhq/driftproof/main/receipts/report-011/git-workflow-and-versioning-claude-opus-5-2026-09-23.json
npx driftproof validate git-workflow-and-versioning-claude-opus-5-2026-09-23.json