Evidence row 119563

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://saylorinnovations.com/api/construction/tile"
    ]
  ],
  "name": "Saylor Innovations  Tile Quantit",
  "owner_address": "0xa2a8df0f7caabea4e120a2568118f141569fc8aa",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:construction:tile",
          "name": "USD Coin",
          "note": "Base settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:8453",
        "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F",
          "memo": "saylor:construction:tile",
          "reference": "7uc1yCiSzkcK9pHWndrunqxJQrw7pnFpstawCPP7CZNd",
          "session": "eyJhcnRpY2xlSWQiOiJjb25zdHJ1Y3Rpb246dGlsZSIsInJlZmVyZW5jZSI6Ijd1YzF5Q2lTemtjSzlwSFduZHJ1bnF4SlFydzdwbkZwc3Rhd0NQUDdDWk5kIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjoiRVBqRldkZDVBdWZxU1NxZU0ycU4xeHp5YmFwQzhHNHdFR0drWnd5VER0MXYiLCJtaW5BbW91bnQiOjEwMDAwLCJleHAiOjE3OTIxNTUwOTM3MjF9.4wmwl6yc7MXzkkj93Qcv1G4mjU_5LO9-VVALScvsgck"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      }
    ],
    "description": "Tile quantity estimator from area, tile size and waste allowance",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "area_m2": "20",
              "tile_height_cm": "60",
              "tile_width_cm": "30",
              "waste_percent": "10"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "area_m2": 20,
              "estimated_tiles": 123,
              "scope_note": "Material estimate only; layout and cuts vary.",
              "tile_height_cm": 60,
              "tile_width_cm": 30,
              "waste_percent": 10
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET",
                    "POST",
                    "PUT",
                    "PATCH",
                    "DELETE",
                    "HEAD"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "area_m2": {
                      "description": "required positive installation area in square meters (query)",
                      "type": "string"
                    },
                    "tile_height_cm": {
                      "description": "required positive tile height in centimeters (query)",
                      "type": "string"
                    },
                    "tile_width_cm": {
                      "description": "required positive tile width in centimeters (query)",
                      "type": "string"
                    },
                    "waste_percent": {
                      "description": "required non-negative waste allowance percentage (query)",
                      "type": "string"
                    }
                  },
                  "required": [
                    "area_m2",
                    "tile_width_cm",
                    "tile_height_cm",
                    "waste_percent"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "area_m2": {
                      "description": "Area, in square metres",
                      "type": "number"
                    },
                    "estimated_tiles": {
                      "description": "Estimated tiles",
                      "type": "number"
                    },
                    "formula": {
                      "description": "Formula used for the calculation",
                      "type": "string"
                    },
                    "scope_note": {
                      "description": "What this data covers and what it leaves out",
                      "type": "string"
                    },
                    "tile_area_m2": {
                      "description": "Tile area, in square metres",
                      "type": "number"
                    },
                    "tile_height_cm": {
                      "description": "Tile height, in centimetres",
                      "type": "number"
                    },
                    "tile_width_cm": {
                      "description": "Tile width, in centimetres",
                      "type": "number"
                    },
                    "waste_percent": {
                      "description": "Waste allowance as a percentage",
                      "type": "number"
                    }
                  },
                  "required": [
                    "area_m2",
                    "tile_width_cm",
                    "tile_height_cm",
                    "waste_percent",
                    "estimated_tiles",
                    "scope_note"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "json",
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1791811517/bazaar-icons/bc5e2b3d111ebbef.jpg",
    "lastUpdated": "2026-10-16T12:49:33.767Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-16T12:49:33.43Z"
    },
    "resource": "https://saylorinnovations.com/api/construction/tile",
    "serviceName": "Saylor Innovations  Tile Quantit",
    "tags": [
      "construction",
      "concrete",
      "paint",
      "tile",
      "materials"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Tile quantity estimator from area, tile size and waste allowance"
}

What the leaf hashes

{"body":"ff88815ecb487c2f2ff7858d53b8dd93bf0359251ca011e872df84e40850a386","id":119563,"kind":"listing","method":"baseline/1","observed_us":1793025615926420,"prev":null,"subject":"x402_bazaar:https://saylorinnovations.com/api/construction/tile","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

1. 0x7b1ee1d7565e02ebe3a3cc6fc14b52a890b0a179912055a5236de1025164b5c0
2. 0xd24c05d1b00ad9565d0f20c26f2c3a7a632878f7f8c4bc95f3e7289f9b870efb
3. 0x96546d12784bf71442d7c2ccd4ff9e736e6766fb7c635816939ba0808eacb01d
4. 0x2c8d2e11e72873f49741ffc8d5a60b6488cf436de1cbbbbeefe2317c5c8eaef3
5. 0x080412af70a40742221c12585ca31d8be43c1008e608df3b22f7c62d510dde32
6. 0x64549a9e139adc560d09ea11296d01e967d58e9735f105979ccc8ecb194d1b22
7. 0x60d05625f30a7ea1df81319987bd6f8c6c8fe10f1edc5878dc03083093201234
8. 0xa3d6361a1d810e70f1d1869c5de792f8b97c4e84db477eba3a410d7e80565f13
9. 0x997e889f6eaf42b61a159d47487522772148ec542d6d21d60d6cf169c618537b
10. 0x227b1846e9338d14a584d945977a59dd6a05f2e84a33212202400515ac9c0632
11. 0xe7152aaccc7d7d5da2d13bc6ee8ec470b8c1a5abe7dfed1431f0ed53ec50ebc5
12. 0xa6406b1a5540d26e0cbd03bb274a01c10968fadb17913a6043bb9427ddfb71ba
13. 0x01c95624b1f2385ef774ee258a9ae58a4df07a1bdaa829de84e1d5201f3f39c2
14. 0x7721d38652b6444b18e1193824e50490ade04851ce6221771f6e374c4527d80f
15. 0x15039087bf60ae9b06b756ec3cbc299760e59923a438bbd91e34d105186db0ed
16. 0x2b6e23e3624a1b66e1d2298cfbce99a93ce6b13d24a58112a71802d79c5f7a76
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae