Test certificates counterfeiters cannot print.
Material test certificates, calibration records and batch quality reports are sealed at the point of testing. Counterfeit certificates are a known problem in industrial procurement, and a sealed one cannot be faked.
What gets sealed
Mill and lab certs sealed at testing, so the alloy that was tested is the alloy that is claimed.
Instrument calibrations anchored on schedule, provable to any auditor.
Quality results sealed per batch, following the parts through the supply chain.
How it runs day to day
The lab or line system seals each certificate as tests complete.
Certificates travel with shipments as usual, proofs attached.
Buyers verify certificates against RoxChain at receiving.
Auditors trace any installed part back to a sealed, dated test record.
A batch of safety-critical fasteners arrives with impressive certificates. Verification fails: the documents were not sealed by the claimed lab. The counterfeit is caught at the dock instead of inside a bridge.
Counterfeit certificates are typically discovered after failure. Verification at receiving moves that discovery to before installation.