# Independent reproduction protocol CAC-20260831

**Published:** 2026-08-31 · **Status:** No qualifying independent report received

1. Disclose identity, affiliation, compensation, conflicts, data rights, and finance/growth roles.
2. Freeze the cohort window, acquisition definition, spend inclusions, attribution method/window, billing key, contribution formula, currency, and exclusions.
3. Publish de-identified rows or sufficient statistics, mapping logic, SQL/code, hashes, denominators, uncovered records, approvals, and limitations.
4. Reconcile aggregate spend and cohort membership to controlled sources.
5. Calculate payback as CAC divided by a period-compatible contribution or gross-profit measure; do not combine a cohort CAC with an incompatible median.

A qualifying report must be authored outside InfiniSynapse using independently controlled data. Running the first-party checker alone does not qualify.