Do you store the VAT numbers I validate?

Your own checks are recorded as your audit history — the result, company details, and verifiedAt timestamp — accessible via the API and dashboard for as long as your account is active, so you can prove a check happened at the time of a transaction. vatnode doesn't build an archive of third parties' checks beyond your own audit records; a check you run isn't visible to the business you checked or to anyone else. You can request an export or deletion at any time; full retention terms — including automatic anonymisation after 5 years and deletion within 30 days of closing your account — are in the privacy policy and DPA.