The Driftproof receipt for hyperframes-animation on Claude Haiku 5.5, from Report 018, dated 2026-11-02, and what it can say.
hyperframes-animation 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: +2901 input and -51 output tokens per call against no skill (measured, grading excluded).
The two arms
| arm | mean | spread across cases | cases |
|---|---|---|---|
| with the skill | 0.764 | ± 0.309 | 3 |
| without the skill | 0.522 | ± 0.312 | 3 |
Lift +0.242, ± 0.439. 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-3/45a1959df0f15f4d75eb60384627c13e3dd96701be4b624260dbe9f4e77d3c03.json; run.transcripts records retained-local.
Receipt hash: 29d5d823dda1a927be2dbc4269e7358cbab6a118e651f764935025c8bb5dad77
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-3/45a1959df0f15f4d75eb60384627c13e3dd96701be4b624260dbe9f4e77d3c03.json
npx driftproof@0.27.0 validate 45a1959df0f15f4d75eb60384627c13e3dd96701be4b624260dbe9f4e77d3c03.json