Third-party verification
Also known as: independent verification · buyer-side verification
Third-party verification is the ability, for whoever receives a document, to check its authenticity without going through the party that handed it over.
It is the criterion separating proof from assertion. As long as the only way to check is to ask the supplier again, the circuit stays closed on the interested party.
Three conditions make it real: an identifier printed on the document, a public address to enter it, and no account required to get the answer. Removing the third is enough to deter most verifications.
What it establishes must be bounded and stated: that the document genuinely comes from its issuer, that it has not moved, exactly what it covers, how long it holds, and whether it has been revoked since.
What it means for a small business
For a supplier, it is what makes the document useful to the buyer rather than to themselves — and therefore what gets it accepted.
Related terms
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Updated September 1, 2026 · Educational definition; not legal advice.