Evidence row 2202080

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://construction-calc.x402tookit.com/board-feet"
    ]
  ],
  "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": "Board feet for lumber from thickness, width, length and quantity (nominal sizes), with total cost at a price per board foot.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "lengthFt": 8,
              "quantity": 10,
              "thicknessIn": 2,
              "widthIn": 4
            },
            "type": "http"
          },
          "output": {
            "example": {
              "asOf": "2026-10-11T14:25:11.860Z",
              "boardFeetPerPiece": 5.333333,
              "cubicFeet": 4.444444,
              "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.",
              "linearFeet": 80,
              "notChecked": [
                "actual dimensions: a 2x4 measures 1.5 x 3.5 in, but lumber is sold and counted by the NOMINAL size used here",
                "whether your supplier sells hardwood by board foot and softwood by the piece or linear foot",
                "…1 more"
              ],
              "quantity": 10,
              "reasons": [
                "Board foot = thickness (in) x width (in) x length (ft) / 12; one board foot is 144 cubic inches of wood.",
                "Uses the nominal sizes you give, which is how board feet are normally priced."
              ],
              "source": "computed locally",
              "summary": "5.3333 board feet per piece, 53.3333 for 10 pieces.",
              "totalBoardFeet": 53.333333,
              "totalCost": null,
              "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": {
                    "lengthFt": {
                      "description": "Length in feet",
                      "type": "number"
                    },
                    "pricePerBoardFoot": {
                      "description": "Price per board foot, to get a total",
                      "type": "number"
                    },
                    "quantity": {
                      "description": "Number of pieces, default 1",
                      "type": "integer"
                    },
                    "thicknessIn": {
                      "description": "Thickness in inches (nominal, for example 2 for a 2x4)",
                      "type": "number"
                    },
                    "widthIn": {
                      "description": "Width in inches (nominal, for example 4)",
                      "type": "number"
                    }
                  },
                  "required": [
                    "thicknessIn",
                    "widthIn",
                    "lengthFt"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "asOf": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "boardFeetPerPiece": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "cubicFeet": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "degraded": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "disclaimer": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "linearFeet": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "notChecked": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "quantity": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "reasons": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "source": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "summary": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "totalBoardFeet": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "totalCost": {},
                    "verdict": {
                      "type": [
                        "null",
                        "string"
                      ]
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-01T22:43:37.863Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-11-01T22:43:37.544Z"
    },
    "resource": "https://construction-calc.x402tookit.com/board-feet",
    "serviceName": "Construction Calculators",
    "tags": [
      "lumber",
      "board-feet",
      "wood",
      "estimating"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Board feet for lumber from thickness, width, length and quantity (nominal sizes), with total cost at a price per board foot."
}

What the leaf hashes

{"body":"78208896bc77c9c0a5ff8211c840178ed815a05e7123855a2e2a5071e5d9af4a","id":2202080,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646812420253,"prev":null,"subject":"x402_bazaar:https://construction-calc.x402tookit.com/board-feet","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. 0xb4c4042aa93d52fb57f2ea2f1676345b18cec891be700c35a291cc86aa671bd1
2. 0x559ae5106ac83fea78ce78ecf01c083fecd2483fdd039a706a3d0a0e528d6ee3
3. 0x2c072b373acb125ee00d7012e323fe287dcc2a09d2a6a1865ffa267de8dfbe50
4. 0x0021d65c71cd75e5e87b6ce632a4e7602c96227805b8d93cde2dd12862844545
5. 0x07b7afdb0d1a1fc7bbc6d05a4fc2fc0202db428674578c6af99a36eca2406e81
6. 0x153851cde0a94ef71834449f6c03b6364e16a0e024c9b7e2055ca7bc7eb3227d
7. 0xbfd15ef820b9000cb4e804121e72e7bbd9bd96c3cb01660919d6d0ddf6e7216b
8. 0xcd4919f12e2565cb92cc372fc9c9b677c29e4e80fbb7a045025728a1c205a662
9. 0x64d4b70c46986752051b475cb9c8aaf929e0f69c747c350e86286b22a8d5afe4
10. 0xa885ee95f751280fd19fba9daa1f939fd6d868e104b763e6bf14389725f4396c
11. 0xae3d752497e0b1117ec3e1c4e69aabf294556064d09c8f5a7ec60bea1e2919c0
12. 0x699ae7fef9e8b87b378f2b7f3c6ae482aa3f19000267f273752a19f30c704991
13. 0x8f3b097427a1bfae26e9231cb5b00552011a27ad93aa4c0d3e267190fcbbb962
14. 0x08da04eef748b7ac08271324db18913501d72c52afa240bf3f08b6da46e3b97f
15. 0x834b6b9a36b42da183e2542785e8d2d7548ace455268a81922edbe6020cef644
16. 0x2922573a524a0694086782ac45fa3083d3fc3f6a2a479b2105e1e2f06b2916f7
17. 0x07ad80c0c234ecea379a2f4450dfd0804db049dbc62abe77af6306049ca6b6c2
18. 0x98cbbf2c68ab4c0b4db782aeb88bea1f30b02178cf8b5d3d24a931d19492ea6d
19. 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af