attest_page

io.github.UltraStarz/x402-extract · Verify this server

Prove what a web page said, at a time, in a way someone who distrusts you can check. Renders the page and returns a signed, timestamped record of it: the text and its SHA-256, the HTTP status, the response headers, the serving IP, and the TLS certificate the site presented. Optionally a screenshot and its hash. All of it hashed into one claim and signed, so any single altered byte breaks the signature. Use it when a page might change or be denied later: terms of service before you agree, a price before you act on it, a policy you are relying on, a claim a competitor published, a listing that can be edited. Verification is free, needs no account, and does not depend on this service continuing to exist — the math is public and `verify_attestation` explains how to redo it yourself. We keep no copy, so the response you receive IS the evidence. Store it. $0.25 USDC per call over x402. A render that fails costs nothing.