Legal

Terms of Use

Last updated 9 October 2026

These terms govern your use of the provenrail.com website and the open-source Provenrail software. By using either, you agree to them. If you do not agree, do not use them.

The software and its licenses

Provenrail is open-source. The client, SDK, verifier, and specification are provided under the MIT License. The server is provided under the GNU AGPL-3.0-or-later. A separate commercial license is available for organizations that prefer not to be bound by the AGPL. The applicable open-source license text, not these terms, governs your rights to use, modify, and redistribute the code. The phone remote is included for a 14-day evaluation and afterwards requires a paid licence key; the check is in open-source code. See licensing.

What Provenrail is, and is not

Provenrail is evidence tooling. It makes the records that reach a sink tamper-evident and independently verifiable. It is not legal advice and not a guarantee of compliance. It cannot prove completeness: an agent that never calls the SDK will not appear in the record. References to regulatory frameworks describe how the technical controls map to those frameworks as supporting evidence; they are not certifications. See the disclaimer.

No warranty

The software and the website are provided "as is", without warranty of any kind, to the fullest extent permitted by law. We do not warrant that they will be uninterrupted, error-free, or fit for a particular purpose. You are responsible for how you deploy and rely on them.

Undo is a convenience for recovering a working tree, not a backup. It covers only what the documentation lists, checkpoints are pruned after 14 days, and a checkpoint may not exist if the hook did not run, failed or timed out. Keep your own version control and backups. See the disclaimer.

Limitation of liability

To the fullest extent permitted by law, we are not liable for any indirect, incidental, special, or consequential damages, or for loss of data, profits, or goodwill, arising from your use of the software or website. Nothing in these terms limits liability that cannot be limited under applicable law.

Acceptable use of the website

Do not attempt to disrupt, overload, probe, or gain unauthorized access to the website or its infrastructure. The hosted verifier is rate-limited and size-capped; do not attempt to circumvent those limits.

Trademarks

"Provenrail" and the Provenrail logo are marks of the project. The open-source licenses grant rights to the code, not to the marks.

All other trademarks, service marks, and product names referenced on the site or in the software are the property of their respective owners. Reference to them does not imply affiliation with, endorsement by, or sponsorship by those owners.

Billing and refunds

Paid subscriptions are billed through our payment processor, Polar, which acts as merchant of record. You may request a full refund within 14 days of a purchase by emailing [email protected]; the refund is processed by Polar under its standard terms. This does not affect any stronger statutory right you have as a consumer in your country of residence.

Governing law and disputes

These terms are governed by the laws of the Republic of Lithuania, without prejudice to any mandatory consumer-protection rules of your country of residence that cannot be waived by agreement. If you are a consumer in the European Union, this choice of law does not deprive you of the protection of the mandatory provisions of the law of the country where you live.

If a dispute arises, please contact us first at [email protected] so we can try to resolve it informally. If that does not work, the courts of Lithuania have jurisdiction, except that if you are an EU consumer you may also bring proceedings in the courts of your country of residence. EU consumers may also use the European Commission online dispute resolution platform at ec.europa.eu/consumers/odr.

Changes

We may update these terms. Material changes will be reflected in the date above. Continued use after a change means you accept the updated terms.

Contact

Questions about these terms: [email protected].