What a passing check confirms
- The certificate is in a format Kumry issues.
- Its signed file fingerprint matches what the certificate says it contains.
- The signature is valid and was made with a Kumry signing key that was in use at the time.
- For a migration certificate, the organisation, period, source system and report fingerprints it lists agree with each other.
- For the ledger, each posted entry still links to the one before it, so earlier history has not been changed.

