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SHA-256 · hash-chain

Verify a timeline

Every tracked event on TrackJet is sealed into a SHA-256 hash-chain the moment it is recorded. Paste a tracking number or chain ID to check that its history has not been altered since.

Verify a TrackJet Passport

Paste a Passport JSON document. The Ed25519 signature is checked against the published key — one altered byte makes it invalid.

The verifier exposes only integrity metadata — never shipment contents. How the chain is built: Verifiable Timeline specification