Evidence row 119564

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": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88",
          "memo": "saylor:construction:tile",
          "reference": "DSZqELWM2bGsNkindawSua1P2UgonkUnLvjHYPcJMjVQ",
          "session": "eyJhcnRpY2xlSWQiOiJjb25zdHJ1Y3Rpb246dGlsZSIsInJlZmVyZW5jZSI6IkRTWnFFTFdNMmJHc05raW5kYXdTdWExUDJVZ29ua1VuTHZqSFlQY0pNalZRIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjoiRVBqRldkZDVBdWZxU1NxZU0ycU4xeHp5YmFwQzhHNHdFR0drWnd5VER0MXYiLCJtaW5BbW91bnQiOjEwMDAwLCJleHAiOjE3OTIxMTY2MTYxODd9.oQNRYuYEhkVKPyC2_KTV0FiH3wAmqd6mvXV0FY6cscA"
        },
        "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": "2026-10-16T02:08:16.325Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-16T02:08:15.63Z"
    },
    "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":"e5856158d21aaee5cd9fad93c72a408e635e70872dffad7e77bc46fdffa43d4a","id":119564,"kind":"listing","method":"baseline/1","observed_us":1793025615930005,"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. 0x92913002e5b22b76fb16b0a786dd6a0a3769e9db57755c2c4c74b1d3d20f09f3
2. 0x9acc50420c3e99fca676f3a5089f7f935c6256b85a70d0a1a87776fcaba430e2
3. 0xe947dac095db726fd2f7f4fb4bde24845358476e0b5f79d72fcfef9db518d41a
4. 0xfc675c8633357a0d5763d129fb269a49a71441b878af2efaca63b52c6a5739d6
5. 0x8b0e72c8c211f43e146edb403591de48ccd5227f460aeb4c1238b68fc72e2657
6. 0x86c37e671544cecb0510ac01e1322d6a7cae683859084de7d0bd0b93e255b3f6
7. 0xd2018c8acfb5dedfdbf13e1c6ef3736f45553da8ce1bc91274448f44c7c5ea62
8. 0x9a8f365c9ada4c4fbefc51e28dd0f0b441e3aba3828b296ec0287a6c01fc9eb5
9. 0x0c136dfcc1f943282b0084289338ad92a791a3ef38b386ba57b7a931b20edfcf
10. 0x8a45c6c1da5d073416437d0946f0ab55916b463036f2f88da85a39961d6874d8
11. 0xdcd590752acb338329aec3087ddc69ef4b8fcbe0bb91a9b8e37e17c10a9dfe92
12. 0x3b55f6d5345bce3e1332e014f19526d25328fb6283d3518837a015c3621c0d1c
13. 0x45c1d3062bbe98a6b1540c7e2ccf6516eedd6ef07fdfeb1ba77ee6272970447c
14. 0xf0edabbb9ba0d643e5505d19d07637eb6f6aed0a1c7356af43ae7d84ae9ef0c5
15. 0xf0bd63870f0bb378fa300bd33563050dcb7b3e02b44eb3ee550c1c534ec4b246
16. 0x1ac20d30773e1f4f2f811540e9a99b5cca9177c9e2e029acc0d80cf3f1d11f0f
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae