§ PRACTICE · 3 MIN READ
The Countersure stamped PDF — what is in it
Anatomy of the verification artefact.
Published 2026-04-16 · Countersure
On the page
Each PDF carries the VAT number, the registered name, the registered address, the source (HMRC live API), the verification ID, the date in ISO format, and the result (verified, flagged, or not found).
A circular passport-style stamp anchors the page. The verification ID format is CS-YYYYMMDD-XXXXXXXX.