# Independent reproduction protocol PPA-20260831

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

1. Disclose analyst identity, affiliation, compensation, conflicts, data rights, accounting role, and any relationship with InfiniSynapse.
2. Freeze source hashes, acquisition-unit definition, cohort window, CAC inclusions and allocations, attribution model and version, currency, taxes, contribution cost stack, billing/service period, refunds, credits, churn, exclusions, and late-arriving-data policy.
3. Publish separate count denominators for account coverage and dollar denominators for spend coverage. Do not infer one from the other.
4. Recalculate stable monthly payback only when recovery is stable and comparable. Otherwise publish the complete period series and first cumulative crossing of CAC.
5. Test duplicate identities, unmatched accounts, unmatched spend, organic units, annual billing, negative invoices, missing costs, multiple currencies, alternative attribution rules, and sensitivity to exclusions.
6. Publish de-identified rows or sufficient statistics, code, formulas, hashes, failures, approvals, and limitations without exposing personal or confidential data.
7. Separate descriptive attribution from causal incrementality and keep budget, billing, and accounting decisions with accountable humans.

A qualifying report must be produced outside InfiniSynapse with independently controlled data and reproducible calculations. Internal review, copying the aggregate CSV, or running the first-party checker alone does not qualify as independent validation.