{
  "x402Version": 2,
  "id": 13224,
  "slug": "13224",
  "resource": "https://exhibit402.dylan-caponi.workers.dev/verify",
  "description": "Re-verify any exhibit402 proof-of-publication certificate for $0.02. Pass id = ERC-721 token id, Arweave tx id, or job id. The service re-downloads the permanently stored screenshot and signed manifest, recomputes every SHA-256, and checks them against the manifest and the on-chain record (immutable screenshotSha256, tokenURI, owner). Returns a machine-readable verdict with per-check detail, so an agent can confirm a certificate is genuine without trusting the issuer.",
  "type": "http",
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0x16B636328745E4e6086071B8Ff9f0C1C7DF9eB21",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "20000",
      "maxTimeoutSeconds": 300
    }
  ],
  "outputSchema": {
    "bazaar": {
      "info": {
        "input": {
          "method": "GET",
          "queryParams": {
            "id": "6"
          },
          "type": "http"
        },
        "output": {
          "example": {
            "checks": [
              {
                "detail": "re-downloaded 4002928 bytes; SHA-256 matches the manifest",
                "name": "screenshot_hash",
                "pass": true
              },
              {
                "detail": "contract's immutable screenshotSha256 matches the manifest",
                "name": "onchain_sha256",
                "pass": true
              }
            ],
            "note": "All stored bytes re-hashed to their recorded values.",
            "tier": "CERTIFIED",
            "token_id": "6",
            "url": "https://en.wikipedia.org/wiki/SHA-2",
            "verified": true
          },
          "type": "json"
        }
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "method": {
                "enum": [
                  "GET"
                ],
                "type": "string"
              },
              "queryParams": {
                "properties": {
                  "id": {
                    "description": "Certificate identifier: ERC-721 token id (digits), Arweave tx id (43 chars), or exhibit402 job id (uuid)",
                    "type": "string"
                  }
                },
                "required": [
                  "id"
                ],
                "type": "object"
              },
              "type": {
                "const": "http",
                "type": "string"
              }
            },
            "required": [
              "type",
              "method"
            ],
            "type": "object"
          },
          "output": {
            "properties": {
              "example": {
                "properties": {
                  "checks": {
                    "type": "array"
                  },
                  "note": {
                    "type": "string"
                  },
                  "tier": {
                    "type": "string"
                  },
                  "token_id": {
                    "type": "string"
                  },
                  "url": {
                    "type": "string"
                  },
                  "verified": {
                    "type": "boolean"
                  }
                },
                "type": "object"
              },
              "type": {
                "type": "string"
              }
            },
            "required": [
              "type"
            ],
            "type": "object"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      }
    }
  },
  "tags": [
    "bazaar"
  ],
  "sourceHost": "exhibit402.dylan-caponi.workers.dev",
  "lastUpdated": "2026-08-21T08:57:32.189Z",
  "quality": {
    "calls30d": 3,
    "uniquePayers30d": 1,
    "lastCalledAt": "2026-08-21T08:57:31.619Z"
  },
  "liveness": {},
  "verified": false,
  "featured": false,
  "provider": {
    "host": "exhibit402.dylan-caponi.workers.dev",
    "manifest_name": "exhibit402.dylan-caponi.workers.dev",
    "source": "cdp-mirror",
    "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources",
    "submitted_at": "2026-09-18T22:00:31.484Z"
  }
}