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Terms of service

Effective 1 October 2026.

These terms are an agreement between you, or the organisation you represent (“Customer”, “you”), and Altix Code Ltd, a company registered in the Republic of Cyprus (“Altix”, “we”), governing your use of Viesproof(the “Service”). By creating an account you accept these terms. If you are creating an account on behalf of an organisation, you confirm you have authority to bind it, and “you” in these terms means that organisation.

1. The Service

Viesproofperforms requester-qualified VAT number checks against the European Commission’s VIES service and produces a tamper-evident, hash-chained receipt for every check, including the ones that fail. It returns one of three outcomes — valid, invalid, or unavailable — never collapsing the second and third into one answer. Plans, limits and pricing are described on our pricing page and may change on reasonable notice as described in Section 5.

The Service is not tax advice. A valid check is one substantive condition for treating an intra-Community supply as zero-rated under Article 138 of Directive 2006/112/EC; it is not the only one, and whether a particular transaction qualifies remains your responsibility. A check and its receipt are evidence of diligence at the moment performed, not a guarantee of any counterparty’s status at any other time or for any other purpose.

2. Accounts, orgs and team members

  • You must provide accurate information when creating an account and keep your credentials confidential. You are responsible for all activity under your account and your org.
  • An org may be shared by a team. The person who creates it is its first Owner. Owners and Admins may invite other people as team members and assign them a role (Owner, Admin, or Member), each with different permissions.
  • Your org is responsible for the conduct of every team member it adds, for ensuring it has the right to add them, and for removing access promptly when it is no longer appropriate.
  • At least one Owner must exist on every org at all times; the Service will not let the last Owner be removed or demoted. Only an Owner may manage billing or delete the org.
  • We log security-relevant account actions — invitations, role changes, removals, API key creation and revocation, and org deletion — in an audit trail visible to Owners and Admins.

3. Acceptable use

You agree not to use the Service to:

  • Check a VAT number for any purpose other than your own legitimate business diligence, or submit requests at a volume or pattern intended to disrupt the VIES service or any member state’s system behind it.
  • Alter, fabricate, or present as genuine any check result or receipt other than one the Service itself produced and recorded.
  • Represent a check or receipt as tax advice, or as a guarantee of a counterparty’s status at any time other than when the check was performed.
  • Violate any applicable law in your use of the Service or its output.
  • Probe, scan, or attempt to bypass the security of the Service, or resell or sublicense access to it without our written permission.

We may suspend or terminate an account that breaches this section, with notice where practicable.

4. Subscriptions, billing and taxes

  • Paid plans are billed in advance on a recurring monthly basis through Stripe, and renew automatically until cancelled.
  • You can cancel at any time from the billing page; cancellation takes effect at the end of the current billing period, and you keep access until then. We do not provide partial-period refunds except where required by law.
  • Fees are exclusive of VAT and other taxes unless stated otherwise; Stripe may calculate and add applicable tax to your invoice based on the billing details you provide, including any VAT number you supply at checkout.
  • If a payment fails and is not resolved, we may suspend access to paid features until it is.
  • Invoices for amounts paid are issued through our internal invoicing system and are retained independently of your Viesproof account for as long as our accounting and tax obligations require.

5. Changes to the Service and these terms

We may update these terms or the Service from time to time. For a material change we will notify org Owners by email at least 14 days before it takes effect, except where a change is required sooner for legal or security reasons. Continuing to use the Service after a change takes effect is acceptance of it; if you do not agree, you may cancel and delete your org before it takes effect.

6. Data processing terms

Where the Service processes a VAT number, your own requester identity, or any trader details returned by a check, you are the data controller and Altix is the data processor, acting only on your documented instructions (to perform the check and produce its receipt, as described in our documentation). The following, together with our Privacy Policy, forms our data processing terms:

  • We process this data only to perform your check, build and store its receipt, and let you later query and verify your own archive while your org exists — and for no other purpose.
  • Our only sub-processor for this specific data is the European Commission’s VIES service, which necessarily receives the VAT number and country code you submit, and your own requester identity when configured — performing the check requires sending it there. We do not disclose it to any other third party.
  • We implement the technical measures described in our Privacy Policy (hashed credentials, hash-chained and HMAC-signed receipts, TLS in transit) and will notify you without undue delay if we become aware of a breach affecting this data.
  • Retention of your receipt archive is governed by your plan’s advertised window as a floor, not a ceiling — see our Privacy Policy, Section 5, for the current, specific state of automated pruning (not yet enforced as of the effective date above). Deleting your org permanently deletes every receipt in its chain; it is your responsibility to export any receipt you may still need for your own statutory retention obligations before you do so.
  • You remain responsible for ensuring you have a lawful basis for each counterparty check you make and for your own compliance use of the resulting receipts.

7. Termination and deletion

  • An org Owner may delete the org at any time from Settings, by typing the org’s name to confirm. This immediately cancels any subscription, permanently deletes every VAT-check receipt in the org’s chain and every team member’s access, and cannot be undone or recovered by us afterward.
  • We may suspend or terminate your account for breach of Section 3, for non-payment that remains unresolved after reasonable notice, or if required to do so by law.
  • Sections that by their nature should survive termination do — including Sections 6 (to the extent data still exists), 8, 9, 10, and 12.

8. Disclaimer of warranties

The Service is provided “as is” and “as available.” VIES is operated by the European Commission and its availability is outside our control; an UNAVAILABLE outcome reflects that, not a defect in the Service. To the maximum extent permitted by law, we disclaim all warranties, express or implied, including fitness for a particular purpose and non-infringement, and do not warrant that the Service or VIES will be uninterrupted or error-free, or that a check or receipt constitutes tax advice or a guarantee of any counterparty’s status.

9. Limitation of liability

To the maximum extent permitted by law, Altix’s total liability arising out of or relating to the Service will not exceed the amount you paid us in the 12 months before the claim arose, and Altix will not be liable for any indirect, incidental, special, consequential, or punitive damages, or for loss of profits, revenue, data (including a deleted receipt archive), or goodwill. Nothing in these terms limits liability that cannot be limited under applicable law, including liability for death, personal injury, or fraud.

10. Indemnification

You agree to indemnify and hold Altix harmless from any claim arising from your breach of Section 3 (acceptable use), or from a tax position you took in reliance on a check or receipt without meeting the other substantive conditions the law applying to that transaction requires.

11. Intellectual property

Altix owns all rights in the Service, excluding your own data and content. We grant you a limited, non-exclusive, non-transferable right to use the Service during your subscription, for your own internal business purposes.

12. Governing law and disputes

These terms are governed by the laws of the Republic of Cyprus, without regard to its conflict-of-laws rules. The courts of Cyprus have exclusive jurisdiction over any dispute arising from these terms or the Service, except where mandatory consumer protection law gives you the right to bring a claim in your own country of residence.

13. General

  • If any provision of these terms is found unenforceable, the rest remain in effect.
  • These terms, together with our Privacy Policy, are the entire agreement between you and Altix regarding the Service.
  • You may not assign these terms without our consent; we may assign them in connection with a merger, acquisition, or sale of assets.
  • A failure to enforce any right under these terms is not a waiver of it.

14. Contact

Altix Code Ltd (Cyprus). Questions about these terms: legal@altixcode.com.