Evidence row 1792066

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://instructional-decision-engine-x402.vercel.app/agent/read"
    ]
  ],
  "name": "NovaPath",
  "owner_address": "0x6b62673ccbe35ff0dc68490c7ca576334e0d607e",
  "raw": {
    "accepts": [
      {
        "amount": "2000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x6B62673cCbe35ff0dc68490c7Ca576334e0D607e",
        "scheme": "exact"
      }
    ],
    "description": "Read one or two permitted public HTTPS pages or text-layer PDFs in one paid request. Return clean bounded text, original URLs, retrieval times, content hashes and reading limits. No model call or provider key required from the buyer. Respect robots and access restrictions; any failed requested read prevents settlement. No browser rendering, OCR or login.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "permissionConfirmed": true,
              "urls": [
                "https://www.weather.gov/documentation/services-web-api"
              ]
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "apiVersion": "0.9.0",
              "documents": [
                {
                  "coverage": "Illustrative; no source was fetched.",
                  "mediaType": "text/plain",
                  "retrievedAt": "2026-10-31T00:00:00Z",
                  "rights": "Illustrative example.",
                  "sha256": "0000000000000000000000000000000000000000000000000000000000000000",
                  "text": "Illustrative public source text, not a fetched document.",
                  "title": "Illustrative public source",
                  "url": "https://example.com/public-source"
                }
              ],
              "generatedAt": "2026-10-31T00:00:00Z",
              "limitations": [
                "Illustrative schema example; no source fetch or payment."
              ],
              "operation": "agent-read"
            },
            "type": "json"
          }
        },
        "schema": {
          "$defs": {
            "gatewayShape0": {
              "additionalProperties": false,
              "properties": {
                "apiVersion": {
                  "const": "0.9.0"
                },
                "documents": {
                  "items": {
                    "$ref": "#/$defs/gatewayShape1"
                  },
                  "maxItems": 2,
                  "minItems": 1,
                  "type": "array"
                },
                "generatedAt": {
                  "type": "string"
                },
                "limitations": {
                  "items": {
                    "type": "string"
                  },
                  "maxItems": 5,
                  "minItems": 0,
                  "type": "array"
                },
                "operation": {
                  "const": "agent-read"
                }
              },
              "required": [
                "apiVersion",
                "operation",
                "generatedAt",
                "documents",
                "limitations"
              ],
              "type": "object"
            },
            "gatewayShape1": {
              "additionalProperties": false,
              "properties": {
                "coverage": {
                  "type": "string"
                },
                "mediaType": {
                  "type": "string"
                },
                "retrievedAt": {
                  "type": "string"
                },
                "rights": {
                  "type": "string"
                },
                "sha256": {
                  "pattern": "^[a-f0-9]{64}$",
                  "type": "string"
                },
                "text": {
                  "type": "string"
                },
                "title": {
                  "type": "string"
                },
                "url": {
                  "type": "string"
                }
              },
              "required": [
                "url",
                "title",
                "text",
                "sha256",
                "mediaType",
                "retrievedAt",
                "coverage",
                "rights"
              ],
              "type": "object"
            }
          },
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "properties": {
                    "permissionConfirmed": {
                      "const": true,
                      "type": "boolean"
                    },
                    "urls": {
                      "items": {
                        "maxLength": 1000,
                        "minLength": 1,
                        "pattern": "^https://[^?#]+$",
                        "type": "string"
                      },
                      "maxItems": 2,
                      "minItems": 1,
                      "type": "array"
                    }
                  },
                  "required": [
                    "urls",
                    "permissionConfirmed"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "$ref": "#/$defs/gatewayShape0",
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-31T22:39:46.344Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-31T22:39:46.127Z"
    },
    "resource": "https://instructional-decision-engine-x402.vercel.app/agent/read",
    "serviceName": "NovaPath",
    "tags": [
      "web-search",
      "web-reading",
      "research",
      "agent-tools"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Read one or two permitted public HTTPS pages or text-layer PDFs in one paid request. Return clean bounded text, original URLs, retrieval times, content hashes and reading limits. No model call or provider key required from the buyer. Respect robots and access restrictions; any failed requested read prevents settlement. No browser rendering, OCR or login."
}

What the leaf hashes

{"body":"2428116fb4b263465fa6eee85760acbcf64491e4e2e5e7a387819f0cb8d3497b","id":1792066,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793560007064661,"prev":null,"subject":"x402_bazaar:https://instructional-decision-engine-x402.vercel.app/agent/read","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-01 (302406 rows).

1. 0x42a87ed52f8dff075ec215515bf84ff66f277ede94564380d866b3019ad4544d
2. 0x46fc3c87140f3399600e1f9583fde687e4263b6a85b9eb6b3e1bf4390874fc1d
3. 0x8ae8e0e8997c36647545dbf8efae5252e27e8df0f97b1a0bb652f74dc4c0ea92
4. 0xe76a8b3af0b0959d71e26f68addfe1db22693d306778b65a6185a0c4d1c1589a
5. 0x8f76fc9ddaa723dd2e6b4da6a264aa4e210847b823f69df6235da3f6cb10cd49
6. 0x6b1720752a46913272f3e7bc94ca1b49e4ecd88e2bc5126f39c146d2df7104fc
7. 0x865f817f7ccc445727e60b9dfe1575a11c4193830f831462d91aa77ad4929d05
8. 0xc0366fda304660fd3cfbfef4004a3b16885a2e9457a29cccc85b3d610b247dd2
9. 0x5d333ced914de0e881b03f28c134c80225076f3b1bdaa09c827a15d3edd8e78c
10. 0x893631bb0415dafc1aefbdeb56d5a5114282a03e0b5f5497f2c0c213fe5ce301
11. 0x08ad35ac81f2c2246b59c5a90ffac0b32f1bf7add87e2adf5a65c8ea3be7bf8b
12. 0x7e6a909e94d1f8837cab15b651ff95e7ac83fd5ae3cade1b35a9feb386827986
13. 0xb0ac6ba344d3036c1dcee62f9b248fb9e72f51af0768ac256a6f2e19b8431780
14. 0xafcf38f796fa072123f5d525a88fd2fb85646ecc6e7e9a763c13179738711c9e
15. 0x9518f8c5450505f008d5d964f03e490f2bbe4e73e8c89384cb6b935788ff2107
16. 0x00ec7149eb024693951d82cb635dfa183f4f34dae011e77ba0420a38a378e0aa
17. 0x97f6f39e601b6ef0e47b730aa0488b718c0d7882ad840342bbd7d3a705a1b3a2
18. 0x1973893697931b7512ae5dc1a3c92ef92f633ae3574dce9029a35b5e94d2d364
19. 0x3315fd2757fdd435852cc277377234a3f3909a6d2a089d0e36f6d59aacfda910

Day root

0x7fa2cba1cf3d6b35630896f5fe1a650adb307ea2c376e80a5f2d9276b7cb5ab3

Chained

0x577ff89ba012beeff3197bcff7fa86752074bdf54205a24359cc437be2a952a4

Published

On Arc Testnet, block 70262758: 0x435bc1b9331471d72e1998f2e420983b5189d4da65ffbd6f27ef40daf5e1ea90