{"api":"v1","generated_at":"2026-09-15T21:51:17.936Z","licence":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/","attribution":"TOLL, with a link to the page cited"},"page":"https://tollindex.com/e/exhibit402-dylan-caponi-workers-dev-verify-a311b2","pinned_page":"https://tollindex.com/e/exhibit402-dylan-caponi-workers-dev-verify-a311b2/at/2026-09-15T21-20Z","pinned":false,"method":"https://tollindex.com/ledger/method","snapshot_at":"2026-09-15T21:20:12.737Z","snapshot_stamp":"2026-09-15T21-20Z","endpoint":{"slug":"exhibit402-dylan-caponi-workers-dev-verify-a311b2","canonical_url":"https://exhibit402.dylan-caponi.workers.dev/verify","resource":"https://exhibit402.dylan-caponi.workers.dev/verify","http_method":"GET","type":"http","x402_version":2,"registries":["cdp"],"primary_registry":"cdp","curated_by_coinbase":false,"description":"Re-verify any exhibit402 proof-of-publication certificate for $0.02. Pass id = ERC-721 token id, Arweave tx id, or job id. The service re-downloads the permanently stored screenshot and signed manifest, recomputes every SHA-256, and checks them against the manifest and the on-chain record (immutable screenshotSha256, tokenURI, owner). Returns a machine-readable verdict with per-check detail, so an agent can confirm a certificate is genuine without trusting the issuer.","service_name":null,"declared_category":null,"declared_tags":[],"route_template":null,"registry_updated":"2026-08-21T08:57:32.189Z"},"derived":{"note":"fields no registry supplies; TOLL derives them and marks them derived on the page","title":"verify","category":"identity","first_observed_by_toll":"2026-09-10T19:08:24.178Z","last_observed_by_toll":"2026-09-15T21:20:12.737Z","observation_began":"2026-09-10"},"presence":{"listed_now":true,"first_absent_at":null,"delisting_confirmed_at":null,"events":[{"registry":"cdp","at":"2026-09-10T19:08:24.178Z","event":"listed"}]},"accepts":[{"registry":"cdp","ordinal":0,"network":"eip155:8453","asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","asset_name":"USD Coin","symbol":"USDC","decimals":6,"amount_display":"0.02 USDC","amount_units":0.02,"decimals_known":true,"pay_to":"0x16B636328745E4e6086071B8Ff9f0C1C7DF9eB21","scheme":"exact"}],"counters":{"observed_at":"2026-09-15T21:20:12.737Z","calls_30d":3,"unique_payers_30d":1,"last_called_at":"2026-08-21T08:57:31.619Z"},"validation":{"latest":{"observed_at":"2026-09-15T06:04:57.006Z","state":"pass","failed_checks":[],"endpoint_http_status":402,"run_id":"daily-2026-09-15"},"uptime":[{"days":7,"observed":5,"passed":5,"ratio":1},{"days":30,"observed":5,"passed":5,"ratio":1},{"days":90,"observed":5,"passed":5,"ratio":1}],"history_90d":[{"observed_at":"2026-09-15T06:04:57.006Z","state":"pass","failed_checks":[],"run_id":"daily-2026-09-15","state_changed":false},{"observed_at":"2026-09-14T05:36:02.555Z","state":"pass","failed_checks":[],"run_id":"daily-2026-09-14","state_changed":false},{"observed_at":"2026-09-13T05:30:05.448Z","state":"pass","failed_checks":[],"run_id":"daily-2026-09-13","state_changed":false},{"observed_at":"2026-09-12T07:46:59.726Z","state":"pass","failed_checks":[],"run_id":"daily-2026-09-12","state_changed":false},{"observed_at":"2026-09-11T11:38:06.078Z","state":"pass","failed_checks":[],"run_id":"daily-2026-09-11","state_changed":true}]},"seller":{"wallet":"0x16B636328745E4e6086071B8Ff9f0C1C7DF9eB21","page":"https://tollindex.com/seller/0x16B636328745E4e6086071B8Ff9f0C1C7DF9eB21","endpoints":2,"hosts":1},"reports":0,"registry_record":{"cdp":[{"type":"http","accepts":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x16B636328745E4e6086071B8Ff9f0C1C7DF9eB21","amount":"20000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300}],"quality":{"lastCalledAt":"2026-08-21T08:57:31.619Z","l30DaysTotalCalls":3,"l30DaysUniquePayers":1},"resource":"https://exhibit402.dylan-caponi.workers.dev/verify","extensions":{"bazaar":{"info":{"input":{"type":"http","method":"GET","queryParams":{"id":"6"}},"output":{"type":"json","example":{"url":"https://en.wikipedia.org/wiki/SHA-2","note":"All stored bytes re-hashed to their recorded values.","tier":"CERTIFIED","checks":[{"name":"screenshot_hash","pass":true,"detail":"re-downloaded 4002928 bytes; SHA-256 matches the manifest"},{"name":"onchain_sha256","pass":true,"detail":"contract's immutable screenshotSha256 matches the manifest"}],"token_id":"6","verified":true}}},"schema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["id"],"properties":{"id":{"type":"string","description":"Certificate identifier: ERC-721 token id (digits), Arweave tx id (43 chars), or exhibit402 job id (uuid)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"url":{"type":"string"},"note":{"type":"string"},"tier":{"type":"string"},"checks":{"type":"array"},"token_id":{"type":"string"},"verified":{"type":"boolean"}}}}}}}}},"description":"Re-verify any exhibit402 proof-of-publication certificate for $0.02. Pass id = ERC-721 token id, Arweave tx id, or job id. The service re-downloads the permanently stored screenshot and signed manifest, recomputes every SHA-256, and checks them against the manifest and the on-chain record (immutable screenshotSha256, tokenURI, owner). Returns a machine-readable verdict with per-check detail, so an agent can confirm a certificate is genuine without trusting the issuer.","lastUpdated":"2026-08-21T08:57:32.189Z","x402Version":2}]}}