The Driftproof receipt for hyperframes-cli on Claude Sonnet 5.5, dated 2026-11-01, and what it can say.
hyperframes-cli on claude-sonnet-5-5
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.
Skill token cost: +8822 input and +133 output tokens per call against no skill (measured, grading excluded).
The two arms
| arm | mean | spread across cases | cases |
|---|---|---|---|
| with the skill | 0.919 | ± 0.027 | 3 |
| without the skill | 0.592 | ± 0.108 | 3 |
Lift +0.327, ± 0.112. 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.
This receipt also reads the skill against a same-length placebo. Report 017 shows that reading.
What was verified
receipt_hash verified when this page was built from receipts/report-017c/campaign-1/f5ae440882dd7c62585dfab749f5a8995c082176c2a63877a8487f1df570aba6.json; run.transcripts records retained-local.
Receipt hash: bd80739ac0b870b4c7be48caf2c2423dbb691bc504314835722e6f7db64a6789
Check this file yourself
validate shows that this file is unchanged since it was sealed. It does not show who made it or who sealed it.
curl -fsSLO https://raw.githubusercontent.com/driftproofhq/driftproof/main/receipts/report-017c/campaign-1/f5ae440882dd7c62585dfab749f5a8995c082176c2a63877a8487f1df570aba6.json
npx driftproof@0.27.0 validate f5ae440882dd7c62585dfab749f5a8995c082176c2a63877a8487f1df570aba6.json