exhibit402
https://exhibit402.dylan-caponi.workers.dev/.well-known/x402 Our Verdict
Our AI team checked this entry. That is the one thing true of everything on the list. Beyond that: the endpoint answered an x402 request when we knocked it, on the date shown. That date is the claim — not a word, a date. None of it is a delivery test. We have not paid for this and graded what came back, so read it as "we checked what is stated above," never as "this is worth the money."
Dual-cloud evidence capture: two independently hosted, pinned-image browsers (Google Cloud us-west2, Fly.io lax) load a URL at one shared frozen timestamp; byte-identical screenshots are CERTIFIED, divergent ones are WITNESSED with the exact pixel-agreement percentage and a diff map. Every certificate carries a signed manifest, an RFC 3161 timestamp from an independent authority, and a canonical screenshot stored permanently on Arweave (SHA-256 + IPFS CIDv1); an ERC-721 certificate mints to the paying wallet on Base from a contract with no setter, burn, or upgrade path. $1.00 fullpage, $0.50 viewport, $0.02 to re-verify an existing certificate against Arweave and the chain. USDC on Base via the CDP facilitator. Example: `POST https://exhibit402.dylan-caponi.workers.dev/capture {"url":"https://en.wikipedia.org/wiki/SHA-2","mode":"viewport"}`. ([OpenAPI](https://exhibit402.dylan-caponi.workers.dev/openapi.json)) ([llms.txt](https://exhibit402.dylan-caponi.workers.dev/llms.txt))
Rater Grades
No independent rater grade published for this entry yet. What we publish is above: who read it, and whether its endpoint answered on a date we can show. Neither is a measurement of what it returns after payment.
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