Evidence row 2201925

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://environment-screen.x402tookit.com/aqi-category"
    ]
  ],
  "name": "Environment Screen",
  "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": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
          "transactionVersions": [
            0
          ]
        },
        "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": "Convert a PM2.5, PM10, ozone or NO2 concentration to its US EPA AQI number and category (2024 PM2.5 table).",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "pollutant": "pm25",
              "value": 40
            },
            "type": "http"
          },
          "output": {
            "example": {
              "aqi": 112,
              "asOf": "2026-10-21T00:33:14.874Z",
              "averagingAssumed": "24-hour average",
              "categories": [
                {
                  "name": "Good",
                  "upTo": 50
                },
                {
                  "name": "Moderate",
                  "upTo": 100
                }
              ],
              "category": "Unhealthy for Sensitive Groups",
              "degraded": false,
              "disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
              "inputUnit": "ugm3",
              "inputValue": 40,
              "notChecked": [
                "the averaging time of your value: the AQI assumes 24 h for PM, 8 h for O3, 1 h for NO2",
                "CO and SO2 sub-indices",
                "…2 more"
              ],
              "pm25Revision": "2024",
              "pollutant": "pm25",
              "reasons": [],
              "source": "US EPA AQI Technical Assistance Document breakpoints (computed locally)",
              "summary": "PM25 40 ugm3 maps to US AQI 112 (Unhealthy for Sensitive Groups).",
              "tableValue": 40,
              "truncatedValueUsed": 40,
              "verdict": "UNHEALTHY_FOR_SENSITIVE_GROUPS"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "pollutant": {
                      "description": "pm25, pm10, o3 or no2",
                      "type": "string"
                    },
                    "revision": {
                      "description": "PM2.5 table: 2024 (default, current) or 2012 (previous)",
                      "type": "string"
                    },
                    "unit": {
                      "description": "ugm3, ppm or ppb (defaults: pm ugm3, o3 ppm, no2 ppb)",
                      "type": "string"
                    },
                    "value": {
                      "description": "Concentration (pm: ug/m3; o3: ppm; no2: ppb unless unit given)",
                      "type": "number"
                    }
                  },
                  "required": [
                    "pollutant",
                    "value"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "aqi": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "asOf": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "averagingAssumed": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "categories": {
                      "items": {
                        "properties": {
                          "name": {
                            "type": [
                              "null",
                              "string"
                            ]
                          },
                          "upTo": {
                            "type": [
                              "null",
                              "number"
                            ]
                          }
                        },
                        "type": "object"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "category": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "degraded": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "disclaimer": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "inputUnit": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "inputValue": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "notChecked": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "pm25Revision": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "pollutant": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "reasons": {
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "source": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "summary": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "tableValue": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "truncatedValueUsed": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "verdict": {
                      "type": [
                        "null",
                        "string"
                      ]
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-01T22:52:36.056Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-11-01T22:52:35.892Z"
    },
    "resource": "https://environment-screen.x402tookit.com/aqi-category",
    "serviceName": "Environment Screen",
    "tags": [
      "aqi",
      "epa",
      "air-quality",
      "calculator"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Convert a PM2.5, PM10, ozone or NO2 concentration to its US EPA AQI number and category (2024 PM2.5 table)."
}

What the leaf hashes

{"body":"87809831cd6a00158968ca2b6bbeb8cccd5593a40323a67f40b516dc86a2de9e","id":2201925,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646810222387,"prev":null,"subject":"x402_bazaar:https://environment-screen.x402tookit.com/aqi-category","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-02 (444186 rows).

1. 0xd56781ff082eceb9e63fb9db40872e28d1926e918beb7611c3c803cbf37ad75d
2. 0x0cc58861370a3851607aaf3be84a889d2243805e4500b51a13940b0f4348c046
3. 0xde3aa2e51516d15e6440b178f895f1fef944c8d7428003846562fba85cfcdab3
4. 0x804842219c3168e4dae73a281e9bbb2a0acd3a45c8fce7f2b52b714a1f4db348
5. 0xcb8bb1fe2cbb8682042c74c3de89bd37d7cd98fc3f8c909bb95d655815b81d33
6. 0x18989df68fe4f19e48d9228d1c4784625e3080badb6bcb7638194dc9bf2ca07f
7. 0x6ae2342f793269a65dab2ff378ba3e7ab503c15dab08caf960b42369d9db3b64
8. 0xf3b6e4220d204b44e95c10837b9e605de7a21676e319beaebea8cda9a86e5550
9. 0x845ac96742995a933f8dd8719d6aa4f4386586c37341ad6d9e6caa60ff360d82
10. 0xe88f24bd72232867cc909388fb81d3c95cf718896dfe023dc2a6bb37bb248f63
11. 0x36d2017338871ac6d86bda5fd407cc327391d6094cabb24575c2290562e50746
12. 0x381b6cfdeaf8ea03cb439693a260cbb0d6ca9377a1c036675bd1e416d9d82eac
13. 0x6a9bee5282acc64846540deef79ef327521ab20b00328c4b297bc96a5b4036c5
14. 0xc94ac971f2e2765086823b6227f70a7d3fdcf267884d07ae0a3f85c1caf941d2
15. 0xa9134f4ed9cec34e13ba243b6a51db73753dbbb3b48c63bd82b22694813d2b02
16. 0x7ddefa7d79e7640c3fed21ee4472689415182c41a0258ab04a81d60495f4c40a
17. 0xdb8bd933619a267f9790faac9839143d202be46af284371cc369cdf683f897ba
18. 0x98cbbf2c68ab4c0b4db782aeb88bea1f30b02178cf8b5d3d24a931d19492ea6d
19. 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af