Evidence row 2202074

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://construction-calc.x402tookit.com/paint-coverage"
    ]
  ],
  "name": "Construction Calculators",
  "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": "Gallons of paint for a room from its size, doors, windows and coats; optional ceiling. Rounds up to the quart.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "coats": 2,
              "doors": 1,
              "heightFt": 8,
              "lengthFt": 12,
              "widthFt": 14,
              "windows": 2
            },
            "type": "http"
          },
          "output": {
            "example": {
              "asOf": "2026-10-11T14:25:13.423Z",
              "buyGallons": 2.25,
              "ceilingSqFt": 0,
              "coats": 2,
              "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.",
              "exactGallons": 2.0857,
              "extraQuarts": 1,
              "notChecked": [
                "primer, dark-to-light colour changes or porous surfaces that need extra coats",
                "trim, baseboards, closets and textured walls (rough walls can use 20% more)",
                "…2 more"
              ],
              "openingsSqFt": 51,
              "paintableM2": 33.91,
              "paintableSqFt": 365,
              "reasons": [
                "Walls 416 sq ft minus 51 sq ft of openings.",
                "Coverage assumed 350 sq ft per gallon.",
                "…1 more"
              ],
              "source": "computed locally",
              "summary": "365 sq ft to paint x 2 coats = 2.086 gal; buy 2.25 gal (2 gal + 1 qt).",
              "verdict": "ESTIMATE",
              "wallAreaSqFt": 416,
              "wholeGallons": 2
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "coats": {
                      "description": "Coats, default 2",
                      "type": "integer"
                    },
                    "coverageSqFtPerGallon": {
                      "description": "Label coverage, default 350",
                      "type": "number"
                    },
                    "doors": {
                      "description": "Doors to subtract, default 0",
                      "type": "integer"
                    },
                    "heightFt": {
                      "description": "Ceiling height in feet",
                      "type": "number"
                    },
                    "includeCeiling": {
                      "description": "yes to include the ceiling, default no",
                      "type": "string"
                    },
                    "lengthFt": {
                      "description": "Room length in feet",
                      "type": "number"
                    },
                    "widthFt": {
                      "description": "Room width in feet",
                      "type": "number"
                    },
                    "windows": {
                      "description": "Windows to subtract, default 0",
                      "type": "integer"
                    }
                  },
                  "required": [
                    "lengthFt",
                    "widthFt",
                    "heightFt"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "asOf": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "buyGallons": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "ceilingSqFt": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "coats": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "degraded": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "disclaimer": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "exactGallons": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "extraQuarts": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "notChecked": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "openingsSqFt": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "paintableM2": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "paintableSqFt": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "reasons": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "source": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "summary": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "verdict": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "wallAreaSqFt": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "wholeGallons": {
                      "type": [
                        "null",
                        "number"
                      ]
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-01T22:43:54.332Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-11-01T22:43:54.165Z"
    },
    "resource": "https://construction-calc.x402tookit.com/paint-coverage",
    "serviceName": "Construction Calculators",
    "tags": [
      "paint",
      "walls",
      "coverage",
      "estimating"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Gallons of paint for a room from its size, doors, windows and coats; optional ceiling. Rounds up to the quart."
}

What the leaf hashes

{"body":"b32cbad5c38265dd162594be86229d2781d96b1bb081ede1a57a64b8b742feb8","id":2202074,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646812402039,"prev":null,"subject":"x402_bazaar:https://construction-calc.x402tookit.com/paint-coverage","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. 0x7cddd29f66b45a0e04d3037da716f09abe2fcbb317f3b25b2f833ec7df7dbfd8
2. 0xb6257636a702dff176520c3c105d02c6af97401e520947e820e1cb41841fff96
3. 0xb09e87a56f9df4d77f2ad9bfa3ef4cf37ca6397795db26e4cf8a1a193fd6bcb1
4. 0xe917f2d4b3aa5ec8404257ca60fd13b1b5e9aa4e9290b9a5a990edff82fa4f19
5. 0xcc6d6003d6be54e08ecd1d18098d8aa6a471935b873b533bee4fcb76b90eb5c8
6. 0x1ccd23cbd3ce72eb60bdc03554451e35e1e48f85f9e55a069b658540e7f84bc3
7. 0x0a7118dc8c6a088ee58eea6c48b8bdfa28b2c605f153bbcdbf570d25ad054401
8. 0xffe379f2a2c50480c01c3888ce3a25c4fb61ac6d8e53c734f28d83b028d90a2d
9. 0x3776173270d5c49780d47878a09f856af07b576ad3d8881aa1ea281a8f30ac9c
10. 0x2ac356e5e38ddff303604ce567e3e790e60b08658a36ea172c89c53585f8675b
11. 0x251e0c548ac924285726cb52143b94b39e981457627c4bc6fe942e36a4cfc0b5
12. 0xc176653014f433cfc5db8c3ea32a9fe09147abfbd97c5e12c9cc2911e6d964f2
13. 0x8e66b29b3c90df538b0747f470a8bf19f7d97dcd0cb8f1d9345876a0f21cff35
14. 0x3e60cda43ffc319c006284ca48609bc80da357b45fb9e0a57810e00816d3e8e0
15. 0x46991481c678139203ebc3c532867ce1643c09ddc33966c4fb48bb7f033ab22f
16. 0x3b89dd05634a82075204d3c671f613081ddfd9df739c64c0a8f39081bdfa32c7
17. 0x1805ef693fbdb2c23fcb61616f830408ca89bec1dc5b68ee47a770ffc0b9760a
18. 0x4d205063c881c48edbbb37762a8d3bbb7444d4c42daa882f663a231893d25c35
19. 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af