Evidence row 2202079

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://construction-calc.x402tookit.com/bulk-material"
    ]
  ],
  "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": "Cubic yards and approximate tons of gravel, sand, topsoil, mulch or compost to cover an area at a given depth.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "areaSqFt": 200,
              "depthIn": 3,
              "material": "gravel"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "approxShortTons": 2.593,
              "asOf": "2026-10-11T14:25:12.116Z",
              "assumedLbPerYd3": 2800,
              "cubicFeet": 50,
              "cubicMeters": 1.416,
              "cubicYards": 1.85185,
              "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.",
              "material": "gravel",
              "notChecked": [
                "real density: weight swings with moisture, size and source (use your supplier's tons-per-yard figure for ordering by weight)",
                "slopes, uneven ground and edges",
                "…2 more"
              ],
              "orderYd3": 2,
              "reasons": [
                "Volume = area x depth / 12 / 27.",
                "Weight uses a typical 2800 lb per cubic yard for gravel; it varies widely.",
                "…1 more"
              ],
              "source": "computed locally",
              "summary": "1.852 yd3 of gravel for 200 sq ft at 3 in deep: about 2.59 short tons.",
              "totalCost": null,
              "verdict": "ESTIMATE"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "areaSqFt": {
                      "description": "Area to cover in square feet",
                      "type": "number"
                    },
                    "compactionPct": {
                      "description": "Extra for settling or compaction, default 0 (10 to 20 for gravel base)",
                      "type": "number"
                    },
                    "depthIn": {
                      "description": "Depth in inches (mulch 2 to 3, gravel path 3 to 4)",
                      "type": "number"
                    },
                    "material": {
                      "description": "gravel, crushed-stone, sand, topsoil, compost or mulch",
                      "type": "string"
                    },
                    "pricePerYd3": {
                      "description": "Price per cubic yard, for a total",
                      "type": "number"
                    }
                  },
                  "required": [
                    "material",
                    "areaSqFt",
                    "depthIn"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "approxShortTons": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "asOf": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "assumedLbPerYd3": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "cubicFeet": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "cubicMeters": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "cubicYards": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "degraded": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "disclaimer": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "material": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "notChecked": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "orderYd3": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "reasons": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "source": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "summary": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "totalCost": {},
                    "verdict": {
                      "type": [
                        "null",
                        "string"
                      ]
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-01T22:43:40.148Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-11-01T22:43:39.892Z"
    },
    "resource": "https://construction-calc.x402tookit.com/bulk-material",
    "serviceName": "Construction Calculators",
    "tags": [
      "gravel",
      "mulch",
      "topsoil",
      "landscaping",
      "estimating"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Cubic yards and approximate tons of gravel, sand, topsoil, mulch or compost to cover an area at a given depth."
}

What the leaf hashes

{"body":"2559987b74d6911e4198f97a375d48523de5c503fbd5679baff133d7ff76ab55","id":2202079,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646812417567,"prev":null,"subject":"x402_bazaar:https://construction-calc.x402tookit.com/bulk-material","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. 0x011aa56126130b1ce58805894513bfa0e3df24152d854b9e013d3839790f3fab
2. 0x4e6027252fa9880d76ee46bc4fdc407af99fe6e0e5c59ee6a8141ca015b6d3d8
3. 0xb2df76a6ffb3cd902e49b156721110d52da41d07cad4f237ac0ee254dfed814f
4. 0xb54f855ce155cb3e9318fa3065b930a8b02945e177438117022e633482db179e
5. 0x597df58e009ecf374c26a4effe063ae811433293b24aae6fc607e620ec586026
6. 0x9ef45fabd30f2bf3b924d81613b41c5bd51eeea277744af4d5a16a2093808073
7. 0x9469686ff6c6862a5081be6ee0ba39730dcb08b5fa61b4817637f147d06b98f6
8. 0xf24f05796f9afb2a71d6e0a7fbb90b3aa68fe766c390a611eac62c103cb20b14
9. 0xfaf9e637b184fc510ad8e4e80be9bc517ae98c3f9fc4db69bd1dc124d07eca16
10. 0x185bc0e471d554c3bb360a392faf4ab03f847c268c795c43b6adc5ba5226c53e
11. 0xc9d65486a416f3ad36110811c68c7be128b1397a5091f7c77de718600fe9ee8a
12. 0x65c4fed8aabb2a2a2c39a5fe7d7ead0ca6133b2439bf808bb16adcf998ac7db7
13. 0x9ccfa562467b683727533a101c56f2ec1b15d392976c5a1d03db8b6563b90233
14. 0x9acdcc385ecc9f1094faf2e01677d863638d23bede5aed4ca22def76698e0af3
15. 0x150a4dbcf309a6bb857da0b59f7588bd57a20fca094e579bf41d6cc6df9c7bff
16. 0x7cb861d18f06406535ade133f716d897f27d257cf0121f99d94c78c713c4b54d
17. 0x53a741b69e9e51c4a288a74712aa6ac3fb28c8923cd3e6461d161c4f2d48b31a
18. 0x050f2978b537f7afb21ee1551577cdf146d1c56f4df12d24315ae5e69366b0a4
19. 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af