A PVoC Certificate of Conformity (CoC) is issued by an accredited inspection body (SGS, Bureau Veritas, Intertek) after physical product testing. A TCR Verified record is a cryptographic proof-of-documentation layer that sits alongside the CoC — it proves the CoC and supporting documents have not been altered since the inspection. Customs authorities increasingly require both: the CoC proves the product passed testing, and the TCR record proves the CoC is genuine.