Evidence row 77208

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://loonie-toll.onrender.com/drinkingwater"
    ]
  ],
  "name": "ClearCheck",
  "owner_address": "0xb531320805c5bed1d46aeadcf4f008fdf172dbda",
  "raw": {
    "accepts": [
      {
        "amount": "20000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
        },
        "maxTimeoutSeconds": 300,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "DUPiupXtuox38dcGoXUKer5mAydCzmaHjrbQ66qeEm8s",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:137",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:42161",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      }
    ],
    "description": "Drinking water verdict for a US public water system: violations on record, health-based or not, CLEAR to REVIEW.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "pwsid": "TN0000128"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "disclaimer": "Advisory only, provided as is without warranty of accuracy or completeness. SDWIS reflects state-reported compliance data that can lag or contain reporting artifacts; a violation is not proof water is…",
              "query": {
                "name": null,
                "pwsid": "TN0000128",
                "state": null
              },
              "reasons": [
                "COLUMBIA POWER AND WATER SYSTEMS (serves 84,617 people) has no violations on record in SDWIS."
              ],
              "recentViolations": [],
              "retrievedAt": "2026-09-17T16:24:14.380Z",
              "source": "EPA Safe Drinking Water Information System (Envirofacts)",
              "system": {
                "active": true,
                "name": "COLUMBIA POWER AND WATER SYSTEMS",
                "populationServed": 84617,
                "pwsid": "TN0000128",
                "sourceWater": "SW",
                "state": "TN",
                "type": "CWS"
              },
              "verdict": "CLEAR",
              "violationCounts": {
                "healthBased": 0,
                "total": 0,
                "unresolved": 0
              }
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "name": {
                      "description": "System name to search when the PWSID is unknown",
                      "type": "string"
                    },
                    "pwsid": {
                      "description": "Public water system ID, e.g. TN0000128",
                      "type": "string"
                    },
                    "state": {
                      "description": "2-letter state code, required with name search",
                      "type": "string"
                    }
                  },
                  "required": [],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "disclaimer": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "query": {
                      "properties": {
                        "name": {},
                        "pwsid": {
                          "type": [
                            "null",
                            "string"
                          ]
                        },
                        "state": {}
                      },
                      "type": [
                        "null",
                        "object"
                      ]
                    },
                    "reasons": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "recentViolations": {
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "retrievedAt": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "source": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "system": {
                      "properties": {
                        "active": {
                          "type": [
                            "boolean",
                            "null"
                          ]
                        },
                        "name": {
                          "type": [
                            "null",
                            "string"
                          ]
                        },
                        "populationServed": {
                          "type": [
                            "null",
                            "number"
                          ]
                        },
                        "pwsid": {
                          "type": [
                            "null",
                            "string"
                          ]
                        },
                        "sourceWater": {
                          "type": [
                            "null",
                            "string"
                          ]
                        },
                        "state": {
                          "type": [
                            "null",
                            "string"
                          ]
                        },
                        "type": {
                          "type": [
                            "null",
                            "string"
                          ]
                        }
                      },
                      "type": [
                        "null",
                        "object"
                      ]
                    },
                    "verdict": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "violationCounts": {
                      "properties": {
                        "healthBased": {
                          "type": [
                            "null",
                            "number"
                          ]
                        },
                        "total": {
                          "type": [
                            "null",
                            "number"
                          ]
                        },
                        "unresolved": {
                          "type": [
                            "null",
                            "number"
                          ]
                        }
                      },
                      "type": [
                        "null",
                        "object"
                      ]
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-20T13:35:18.145Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-20T13:35:17.955Z"
    },
    "resource": "https://loonie-toll.onrender.com/drinkingwater",
    "serviceName": "ClearCheck",
    "tags": [
      "government-data",
      "compliance",
      "verification",
      "public-records",
      "risk-screening"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Drinking water verdict for a US public water system: violations on record, health-based or not, CLEAR to REVIEW."
}

What the leaf hashes

{"body":"ba18a9b285fe49962c128918b7452527214c4f404bf0f3aae0ba5ef14f4a70a7","id":77208,"kind":"listing","method":"baseline/1","observed_us":1793025493463479,"prev":null,"subject":"x402_bazaar:https://loonie-toll.onrender.com/drinkingwater","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

1. 0xfb3829c19695835f3f4da0ea89878f290ee53310e99a2d98a8ca1537f43d9129
2. 0x252e5f3ac6cf00e20f2711a42f982c687b0949f1483525c24fdf65e58772fd68
3. 0xdd780472090b277812f086d85c440dbc3e5743bfa001116fa702a759cc204ac2
4. 0xfce7da568d06671fc27d92b9918e91e9bc1b47834b3711095c32c2e626959bb8
5. 0x57337d7a551e8df9196f87876ee2b71874bc01e8a56b8d15e0b61f06d4428b61
6. 0x54548f8e5c12bb9c900792456f71b6fb8acbb777e2cdd77c3def5e9321f5f4c2
7. 0xde5136c9664a3801a865b22ed70fcc1fd8ea84e4b442bcb344ce730d51b9ca42
8. 0x52603e6dbeb65c57ecd303b696d4cb56699ec6e47748a85f45868d3a7cbc5e72
9. 0x58a264708b2de7686001e7a3f193bfa24c3c73c95dc89570827da2e8e66343b8
10. 0x1b07c7876c95e52802884c5d693a686ed53bb8a2740e3d87b145fb511a8d605e
11. 0xcf10f42f956ec0f58e8d60fb00e23c6415064b00d70e8566efe0f1b98e7e1d0a
12. 0xf8173f36b7a27e1bb0f6961a49501bba1d99349c5e11449d0d557fbaa910be0a
13. 0xbee644d57738676bfb20eb90d6021f364bf883a8d54f8d17e9dc4749b4074c3d
14. 0x44945ea9ad8b24e723ad5a8fd6d014024a49531783f74ff9229c2ab6930e84c8
15. 0x68d296b1e00b4899fb83c3fba36fffaefa311eac2903067dbebfe776a12b4a9a
16. 0x5fb5dda563336cd1bc1b9f44c52b76237ae72ed2145cb9290f39f304ca7dd678
17. 0x74a0a08e4e7ab9aa5bfbead33dec7e1c7e8e364cff69a63720d764bbe987aadc

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae