# Desk log GM-HOLD-20260823

**Status:** First-party illustrative assignment composite; not customer, production, randomized-trial, benchmark, or independently audited data  
**Run date:** 2026-08-23  
**Evidence checked:** 2026-08-31  
**Operator:** InfiniSynapse Data Team  
**Attestor:** William Zhu, InfiniSynapse cofounder ([GitHub @allwefantasy](https://github.com/allwefantasy))

The operator inspected an illustrative 35-day pack: 72,400 users split 49.8%/50.2%, a 1.6-point checkout delta, a 0.5-point refund delta, and 180-ms p95 latency movement. Shipping remained held because both displayed guardrails were adverse.

The [CSV](https://infinisynapse.com/blog-media/guardrail-metrics/downloads/guardrail-summary-GM-HOLD-20260823.csv) exposes six aggregates and one held decision. The [verification script](https://infinisynapse.com/blog-media/guardrail-metrics/downloads/verify-GM-HOLD-20260823.py) checks displayed output only. Rows, metric definitions, SQL, intervals, distributions, thresholds, and pre-registration evidence are unavailable.

External context: [ASA p-value statement](https://www.amstat.org/asa/files/pdfs/p-valuestatement.pdf), [NIST/SEMATECH e-Handbook](https://www.itl.nist.gov/div898/handbook/), and [FTC Advertising Substantiation](https://www.ftc.gov/legal-library/browse/advertising-substantiation) (retrieved 2026-08-31). These publishers did not review this run.