The Driftproof receipt for hyperframes-cli on Claude Haiku 5.5, from Report 018, dated 2026-11-02, and what it can say.
hyperframes-cli on claude-haiku-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 +76 output tokens per call against no skill (measured, grading excluded).
The two arms
| arm | mean | spread across cases | cases |
|---|---|---|---|
| with the skill | 0.904 | ± 0.069 | 3 |
| without the skill | 0.340 | ± 0.156 | 3 |
Lift +0.564, ± 0.170. 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 018 shows that reading.
What was verified
receipt_hash verified when this page was built from receipts/report-018/campaign-3/1460f2fbadb049e68e4b07c2a0628f83ebd89ff596b1dcf7f30a8d6b7bd35e33.json; run.transcripts records retained-local.
Receipt hash: 0f244fae953a7bc2b45d8c43c8a89a2792fec792ab12d8d67072c58308c70d61
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-018/campaign-3/1460f2fbadb049e68e4b07c2a0628f83ebd89ff596b1dcf7f30a8d6b7bd35e33.json
npx driftproof@0.27.0 validate 1460f2fbadb049e68e4b07c2a0628f83ebd89ff596b1dcf7f30a8d6b7bd35e33.json