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The Driftproof receipt for hyperframes on Claude Sonnet 5.5, dated 2026-10-18, and what it can say.

hyperframes on claude-sonnet-5-5

Run on 2026-10-18, runner 0.22.2, surface claude-cli, verification level TESTED.

Regressed

A case separated downward under the band rule. That is a separation detected under the rule, not proof that the skill moved the score.

driftproof badge: regressed on claude-sonnet-5-5, 2026-10-18

The two arms

armmeanspread across casescases
with the skill0.946± 0.0613
without the skill0.919± 0.1193

Lift +0.026, ± 0.133. 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.

The two arms of this receipt drawn as ranges, with the effect floor marked. 0 0.25 0.5 0.75 1 overlapping without the skill 0.919 with the skill 0.946

What was verified

receipt_hash verified when this page was built from receipts/skill-measurements/published/4b26323ffc4e79d0f411769a3ae524e747e386ff4fabdd339099c202c03c82cf.json; run.transcripts records retained-local.

Receipt hash: 0aba83f8316912473981b79d945c81c443f47de415bdac61098b5dac642afdde

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/4b26323ffc4e79d0f411769a3ae524e747e386ff4fabdd339099c202c03c82cf.json

npx driftproof@0.22.4 validate 4b26323ffc4e79d0f411769a3ae524e747e386ff4fabdd339099c202c03c82cf.json

Embed the badge

[![driftproof](https://driftproofhq.com/r/0aba83f8316912473981b79d945c81c443f47de415bdac61098b5dac642afdde/badge.svg)](https://driftproofhq.com/r/0aba83f8316912473981b79d945c81c443f47de415bdac61098b5dac642afdde/)