Terms of service

1. Independent service

AlphaProof Code is an independent third-party proof-engineering service. It is not affiliated with Google, Google DeepMind, Lean, the Lean FRO or any theorem-prover vendor. Product names and trademarks belong to their respective owners.

A proof pass provides bounded proof-engineering attention. It is not a software license, cloud compute contract, academic credential or promise that an open mathematical problem will be resolved.

2. Passes, credits and scope

• ✓Each pass has a fixed number of proof credits and a one-time USD price shown at checkout.
• ✓Credits are consumed only under the intake terms supplied with the pass.
• ✓The request must include a reproducible repository revision, toolchain, build command and smallest useful failing context.
• ✓Changing a theorem statement, dependency set or acceptance criteria may require a new scope.

3. Payment and delivery

Stripe Checkout processes payment. The server verifies the Stripe amount, currency and order reference before advancing delivery. The amount displayed by Stripe is authoritative.

Passes are delivered manually through the private order page. No customer account is created. Keep the order number and purchase email safe; support may require both for access and fraud checks.

4. Refunds and cancellations

• ✓Undelivered orders may be reviewed for a refund.
• ✓Delivered digital passes and consumed proof credits are generally non-refundable.
• ✓Contact support before initiating a chargeback so the order and delivery evidence can be reviewed.
• ✓Nothing in these terms excludes non-waivable consumer rights.

5. Acceptable use

• ✓Do not submit material you do not have the right to share.
• ✓Do not send passwords, private keys, access tokens or recovery codes through checkout or email.
• ✓Do not use the service for fraud, academic misrepresentation or unauthorised account access.
• ✓Do not attempt to bypass payment, order access controls or rate limits.

6. Verification and disclaimers

Lean's kernel checks formal terms relative to definitions and assumptions. Human review is still required to decide whether a formal statement matches the intended mathematics. We do not guarantee completeness, publication acceptance or downstream correctness.

The service is provided on a reasonable-effort basis. Availability may be limited by queue capacity, third-party payment systems or infrastructure providers.

7. Changes and third-party terms

We may update these terms. The version published when an order is placed governs that order unless a change is required by law. Stripe, hosting and other providers may apply their own terms to their services.