Evidence row 2201471

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://pet-calc.x402tookit.com/dog-age"
    ]
  ],
  "name": "Pet Care Calc",
  "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": "Human-equivalent age of a dog by the AVMA 15-9-5 rule and the 2020 epigenetic-clock formula 16 ln(age) + 31.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "dogYears": 7
            },
            "type": "http"
          },
          "output": {
            "example": {
              "asOf": "2026-10-12T01:16:19.630Z",
              "degraded": false,
              "differenceYears": -13.13,
              "disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
              "dogYears": 7,
              "epigeneticReliable": true,
              "humanYearsAvma": 49,
              "humanYearsEpigenetic": 62.13,
              "notChecked": [
                "breed and size, which change how fast dogs age (large breeds age faster)",
                "individual health",
                "…1 more"
              ],
              "reasons": [
                "AVMA rule: 15 human years for the first dog year, 9 for the second, 5 for each after that.",
                "Epigenetic formula: human age = 16 x ln(dog age) + 31, from DNA-methylation clocks."
              ],
              "source": "computed locally (AVMA convention; Wang et al. 2020 epigenetic formula)",
              "summary": "A 7-year-old dog is about 49 in the AVMA rule and 62.1 by the epigenetic formula.",
              "verdict": "COMPUTED"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "dogYears": {
                      "description": "The dog's age in calendar years (for example 7 or 2.5)",
                      "type": "number"
                    }
                  },
                  "required": [
                    "dogYears"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "asOf": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "degraded": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "differenceYears": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "disclaimer": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "dogYears": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "epigeneticReliable": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "humanYearsAvma": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "humanYearsEpigenetic": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "notChecked": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "reasons": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "source": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "summary": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "verdict": {
                      "type": [
                        "null",
                        "string"
                      ]
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-01T23:43:59.61Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-11-01T23:43:58.901Z"
    },
    "resource": "https://pet-calc.x402tookit.com/dog-age",
    "serviceName": "Pet Care Calc",
    "tags": [
      "dog",
      "age",
      "human-years",
      "pets"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Human-equivalent age of a dog by the AVMA 15-9-5 rule and the 2020 epigenetic-clock formula 16 ln(age) + 31."
}

What the leaf hashes

{"body":"6335327d698e977eb0d6c18e75f065ce4afbc7a646af012994a072239f1ddea5","id":2201471,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646805637372,"prev":null,"subject":"x402_bazaar:https://pet-calc.x402tookit.com/dog-age","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. 0x7c74341da350e49dcb49dbff88ee9e10dad0a0a4c7d7b7ffc99d3d855bff6571
2. 0xc10f39eba7b348f158fa307f1b4fccf5c0884f6a1b3af6aa63a49a193b03d012
3. 0xe14ab2397a7dd4672271ac5e4ba6c8609e0898519236927ccfafdb12fd6b62c1
4. 0xc88968972ab514b7f4fc1d8c8cde9b14869beaa522ad96cca0d7cdc3227df257
5. 0x357eab29cffd1854c4e416fe60a2aeb4256385bee37d9febec65839c9a497da7
6. 0x05141e56faf026bcbf4a292c4cbe10250bbc6358b42965625276cae99ef63cd1
7. 0x56ae5d232b18a58c0f33b66107c68ec5b5e380ab8b8a2221eada3350dd59d13f
8. 0xb3b9ef500fa494e02437d31b229d592732d66a0d19ab7c2e8da55003403e08d9
9. 0xbf566343a018d394092c65583a0a560f0f72f555ce937c8d88538c1904e5b729
10. 0xee45cec710e4626abe0d6a93a4092955f5f6453fe29302abfa521be087869822
11. 0xba4835b6b8933e1938390e10fbaea2d501aed997dc7616319e16144711f9b5bf
12. 0x8d1e21bdb30d190f33f362fb3e038520281852ad2d6e49bf14075b805164fae9
13. 0x96da2b0c348fe4c196311a3c711ae28b065713c442f3976e291c0a6f22cb1f7e
14. 0x3e60cda43ffc319c006284ca48609bc80da357b45fb9e0a57810e00816d3e8e0
15. 0x46991481c678139203ebc3c532867ce1643c09ddc33966c4fb48bb7f033ab22f
16. 0x3b89dd05634a82075204d3c671f613081ddfd9df739c64c0a8f39081bdfa32c7
17. 0x1805ef693fbdb2c23fcb61616f830408ca89bec1dc5b68ee47a770ffc0b9760a
18. 0x4d205063c881c48edbbb37762a8d3bbb7444d4c42daa882f663a231893d25c35
19. 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af