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

media-use on claude-sonnet-5-5

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

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.

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

The two arms

armmeanspread across casescases
with the skill0.936± 0.0753
without the skill0.802± 0.2303

Lift +0.134, ± 0.241. 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 0.802 with the skill 0.936

What was verified

receipt_hash verified when this page was built from receipts/skill-measurements/published/e8dabff8044e067fc7ee964ab16b0f5cd6fa94b1d5ed4bec5484b7a87a9cb849.json; run.transcripts records retained-local.

Receipt hash: 65231f29050580d7e14324c7aff5bfc053844d5c11093958713393e98283c26c

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/e8dabff8044e067fc7ee964ab16b0f5cd6fa94b1d5ed4bec5484b7a87a9cb849.json

npx driftproof@0.22.4 validate e8dabff8044e067fc7ee964ab16b0f5cd6fa94b1d5ed4bec5484b7a87a9cb849.json

Embed the badge

[![driftproof](https://driftproofhq.com/r/65231f29050580d7e14324c7aff5bfc053844d5c11093958713393e98283c26c/badge.svg)](https://driftproofhq.com/r/65231f29050580d7e14324c7aff5bfc053844d5c11093958713393e98283c26c/)