The Driftproof receipt for hyperframes-registry on Claude Sonnet 5.5, dated 2026-10-18, and what it can say.
hyperframes-registry 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.
The two arms
| arm | mean | spread across cases | cases |
|---|---|---|---|
| with the skill | 0.978 | ± 0.025 | 3 |
| without the skill | 0.429 | ± 0.165 | 3 |
Lift +0.549, ± 0.167. 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/skill-measurements/published/a57716bebf216652ad631dc7d8b984e6eb6b21e03aeb7a8961fa6871c7303c43.json; run.transcripts records retained-local.
Receipt hash: ff6bb0a23b2b250c71181de274ba684ac5706558cd3214e08acc637823290029
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/skill-measurements/published/a57716bebf216652ad631dc7d8b984e6eb6b21e03aeb7a8961fa6871c7303c43.json
npx driftproof@0.22.4 validate a57716bebf216652ad631dc7d8b984e6eb6b21e03aeb7a8961fa6871c7303c43.json