Mu Sigma · Verification proof
What's verified. By what evidence. When.
The proof page lists every verification record contributing to this provider's standing. Date and level are public; client identity is anonymised unless the client opts in; underlying data sources are held in the evidence vault.
Confidentiality.
Trustgent verifies privately and displays publicly. The evidence vault holds the underlying artefacts (analytics screenshots, exported CSVs, dashboard read-only access tokens, audited reports). The public proof page surfaces what the client has agreed to disclose: typically the metric, the window, and an anonymised reference to the engagement.
Verifications decay. L3 ratings decay over ~24 months; L4 and L5 records carry their own decay timers documented on how we verify.