Every certificate, surveillance, renewal, suspension and withdrawal is recorded as a linked SHA-256 event in our immutable TrustChain™ ledger — anchored to the Blockchain Verification Ledger™.
Each certificate event (issued, audited, renewed, suspended) creates a new SHA-256 hash linking to the previous event — making any tampering immediately detectable.
The hash includes the certificate ID, event type, actor, timestamp, payload and previous hash. Changing any single value breaks the chain.
Key events are anchored to the Blockchain Verification Ledger™, creating an external, independently verifiable timestamp.
Anyone can view the TrustChain™ timeline for any active certificate on the public verification page.