Terms of Service
The protocol and the verifier are open and free. The Vault and the Verified Evidence Package are paid subscription services. These Terms cover both.
1. Who we are, and acceptance
The LedgerProof Protocol is owned and stewarded by the LedgerProof Foundation, a California nonprofit (501(c)(3) application in process). The managed services described here are operated by LedgerProof Inc. ("LedgerProof," "we," "us"). By using the website, the verifier, the SDK, or any paid service (together, the "Service"), you agree to these Terms. If you use the Service for an organization, you confirm you are authorized to bind it.
2. The open protocol and verifier
The protocol specification and the reference implementations are published as open source under Apache 2.0. You may read, implement, fork, run your own operator, and verify any receipt — for free, without an account, and without depending on LedgerProof. The verifier at verify.ledgerproofhq.io is free. Your use of the open-source software is governed by its Apache 2.0 licence; these Terms govern your use of our hosted Service.
3. Eligibility and accounts
- You must be at least 16 and able to form a binding contract.
- Provide accurate account information and keep it current.
- You are responsible for safeguarding your credentials and any signing keys, and for all activity under your account. Tell us promptly of any unauthorized use.
4. Acceptable use
You agree not to:
- use the Service unlawfully, or to submit content or AI systems you are not authorized to submit;
- infringe others' rights, or anchor content that is illegal to possess or distribute;
- disrupt, overload, probe, or circumvent the rate limits and abuse protections (including on the free tiers);
- resell or white-label the paid Service except under a written partner agreement.
We may suspend or limit access to protect the Service or other users, and will restore it once the issue is resolved.
5. Free tiers
The website demo, the verifier, and any free anchoring allowance are provided as is and subject to fair-use limits that may change. The free anchoring allowance is a per-user daily cap; verifying is always free. Nothing in the free tiers creates a service-level commitment.
6. Paid plans, billing, and renewals
- What's paid: the Vault (the system of record) and the Verified Evidence Package. Plans are priced per registered AI system, as shown on the pricing page or in your order.
- Billing: handled by our payment processor (Stripe). You authorize recurring charges for the plan and any metered usage (for example, additional AI systems or on-demand anchors).
- Renewal: subscriptions renew for successive terms unless cancelled before the renewal date. You can cancel from the app or by contacting us; cancellation takes effect at the end of the current term.
- Taxes: prices exclude VAT and other taxes, which are added where applicable.
- Changes: we may change prices for future terms with reasonable advance notice; changes do not affect a term you have already paid for.
- Refunds: except where required by law or stated in your order, payments are non-refundable. Your receipts remain verifiable after cancellation.
7. Your content, and the license you give us
You keep all rights to your documents and data. Because documents are fingerprinted on your device, we never receive your document content — only hashes, signatures, timestamps, and any metadata you choose to attach. You grant LedgerProof a limited, worldwide licence to process that hash-and-metadata material solely to provide and secure the Service. Processing of personal data is governed by our Privacy Notice and, for paid plans, a Data Processing Agreement.
8. Intellectual property
The protocol and reference implementations are open under Apache 2.0 and owned by the Foundation. The "LedgerProof" name, logo, and the design of our hosted apps and websites are owned by LedgerProof and may not be used without permission, except for nominative reference. Feedback you send us may be used without obligation.
9. What a receipt proves — and what it does not
A LedgerProof receipt is tamper-evident, not tamper-proof; assurance deepens with public-ledger confirmations. A receipt proves a record existed and is intact at a point in time. It does not prove the record's contents are true, accurate, complete, or who authored them, and it is not, by itself, a determination of legal compliance or admissibility. Your auditor, counsel, or regulator evaluates that on the merits. Nothing in the Service is legal, tax, financial, or compliance advice.
10. Third parties
The Service relies on third parties including Stripe (payments), Supabase (database and authentication), Cloudflare (network), and the public chain (anchoring). Their availability is outside our control; the public chain is permissionless and not operated by us.
11. Disclaimers
Except as expressly stated in a signed agreement, the Service and the open-source software are provided "as is" and "as available," without warranties of any kind, whether express, implied, or statutory, including fitness for a particular purpose and non-infringement. We do not warrant that the Service will be uninterrupted or error-free, or that any receipt will be accepted by any court, regulator, or counterparty.
12. Limitation of liability
To the maximum extent permitted by law, LedgerProof is not liable for indirect, incidental, special, consequential, or punitive damages, or for lost profits or data. For the free tiers, our aggregate liability is limited to €100. For paid plans, our aggregate liability is limited to the fees you paid for the Service in the 12 months before the claim. Nothing here limits liability that cannot be limited by law (including for fraud, or death or personal injury caused by negligence). Some mandatory consumer rights may not be excluded.
13. Indemnity
You will indemnify LedgerProof against claims arising from your unlawful use of the Service, your content, or your breach of these Terms, to the extent permitted by law.
14. Suspension and termination
You may stop using the Service at any time and cancel a subscription as described above. We may suspend or terminate access for material breach, legal requirement, or risk to the Service, with notice where practicable. On termination, your right to use the hosted Service ends; your receipts remain independently verifiable against the public chain, and you may export your records before access ends.
15. Changes to these Terms
We may update these Terms. Material changes affecting paid customers will be communicated through your account or by email at least 14 days before they take effect; continued use after that constitutes acceptance.
16. Governing law
Unless your order states otherwise, these Terms are governed by the laws of the State of Delaware, USA, without regard to conflict-of-laws rules, and subject to any mandatory consumer-protection laws of your country of residence. Where required, EU/UK consumers retain the protections of their local law and the right to bring proceedings in their home courts.
17. Contact
Commercial and contract questions: commercial@ledgerproofhq.io. Security: security@ledgerproofhq.io. Privacy: see the Privacy Notice.