# Claim-to-Evidence Ledger

Rhinohead Labs · Free reusable research template

## Record one claim at a time

Claim ID / exact claim:

Who made it / original source URL:

Event date / date accessed:

Metric and units / currency / geography:

Reporting period / numerator / denominator:

Revenue, gross sales, net profit, learning or student outcome?

Starting resources / prior audience / experience:

Documented costs / refunds / labor / missing costs:

Evidence available / provenance / permission to publish:

Conflicts or incentives:

Contradictory evidence / alternative explanations:

Grade A, B, C or D and narrow reason:

What this establishes:

What this does not establish:

Question for the subject / response / response date:

Next verification step / owner / due date:

Publication status / editor / corrections:

## Grade carefully

A: authoritative primary record for the narrow claim or independently reconciled records.
B: documented method/observations with material limitations.
C: selected self-report, promotional case study or preliminary observation.
D: missing or unverified support. Unknown is not false.

Label hypotheses and illustrative models separately. A seller's page can establish its advertised terms without proving its promised outcomes. Do not publish private financial records without permission and redaction.