How to Distinguish Supplier Claims from Independently Verified Evidence

Use three visible states

An observed fact is something an editor can directly confirm, such as a policy page being accessible on a recorded date. A supplier claim is a statement made by the seller, such as an asserted dispatch origin. An independently verified fact has a corroborating source that is sufficiently separate and relevant.

The same page can contain all three states. Do not label an entire supplier ‘verified’ because one document was confirmed.

Identify the source’s relationship

A laboratory-hosted report may be independent of the supplier’s website, but the supplier may still have selected and paid for the sample. A marketplace review score is external, yet it can be incomplete or manipulated. Independence is a relationship to describe, not a magic badge.

Write claims with attribution

Use ‘the supplier states’ for uncorroborated marketing or policy statements. Use ‘we observed’ for dated desk checks. Use ‘the issuing portal confirmed report X’ only where that exact confirmation was completed. Precise attribution lets readers see where uncertainty sits.

Update state without rewriting history

When a claim becomes verified, retain the earlier observation date and add the new source and date. When evidence disappears, log the change rather than pretending it never existed. This makes rankings auditable over time.

• Who made the claim?
• What exactly was checked?
• Which source was independent?
• When was the evidence last available?