Evidence row 119561

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://saylorinnovations.com/api/construction/concrete?"
    ]
  ],
  "name": "Saylor Innovations  Concrete Vol",
  "owner_address": "0xa2a8df0f7caabea4e120a2568118f141569fc8aa",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:construction:concrete",
          "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:concrete",
          "reference": "7ngdzk3hq3BjVWF36mX94YT3Xb5dKkNCykvLpVfjajCx",
          "session": "eyJhcnRpY2xlSWQiOiJjb25zdHJ1Y3Rpb246Y29uY3JldGUiLCJyZWZlcmVuY2UiOiI3bmdkemszaHEzQmpWV0YzNm1YOTRZVDNYYjVkS2tOQ3lrdkxwVmZqYWpDeCIsInJlY2lwaWVudCI6IjdMU2pmckpmOGZOc0I4VkE5dTdOM1dFbjI1c21RTHBvYjNTdnlVdlhhY3k3IiwibWludCI6IkVQakZXZGQ1QXVmcVNTcWVNMnFOMXh6eWJhcEM4RzR3RUdHa1p3eVREdDF2IiwibWluQW1vdW50IjoxMDAwMCwiZXhwIjoxNzkyMTE2NjE0MzQ1fQ.K6nvA8Lzr29wAQJiMfKmT-lfYiaqCfEdgeGfniB2mjA"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      }
    ],
    "description": "Concrete volume estimate for a rectangular pour with waste allowance - cubic meters and liters",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "depth_m": "0.1",
              "length_m": "5",
              "waste_percent": "10",
              "width_m": "3"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "depth_m": 0.1,
              "estimated_volume_m3": 1.65,
              "length_m": 5,
              "scope_note": "Quantity estimate only; site practice varies.",
              "waste_percent": 10,
              "width_m": 3
            },
            "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": {
                    "depth_m": {
                      "description": "required positive depth meters (query)",
                      "type": "string"
                    },
                    "length_m": {
                      "description": "required positive length meters (query)",
                      "type": "string"
                    },
                    "waste_percent": {
                      "description": "required non-negative waste allowance percentage (query)",
                      "type": "string"
                    },
                    "width_m": {
                      "description": "required positive width meters (query)",
                      "type": "string"
                    }
                  },
                  "required": [
                    "length_m",
                    "width_m",
                    "depth_m",
                    "waste_percent"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "depth_m": {
                      "description": "Depth, in metres",
                      "type": "number"
                    },
                    "estimated_volume_liters": {
                      "description": "Estimated volume liters",
                      "type": "number"
                    },
                    "estimated_volume_m3": {
                      "description": "Estimated volume m3",
                      "type": "number"
                    },
                    "formula": {
                      "description": "Formula used for the calculation",
                      "type": "string"
                    },
                    "length_m": {
                      "description": "Length, in metres",
                      "type": "number"
                    },
                    "scope_note": {
                      "description": "What this data covers and what it leaves out",
                      "type": "string"
                    },
                    "waste_percent": {
                      "description": "Waste allowance as a percentage",
                      "type": "number"
                    },
                    "width_m": {
                      "description": "Width, in metres",
                      "type": "number"
                    }
                  },
                  "required": [
                    "length_m",
                    "width_m",
                    "depth_m",
                    "waste_percent",
                    "estimated_volume_m3",
                    "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": "2026-10-16T02:08:14.472Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-16T02:08:13.761Z"
    },
    "resource": "https://saylorinnovations.com/api/construction/concrete?",
    "serviceName": "Saylor Innovations  Concrete Vol",
    "tags": [
      "construction",
      "concrete",
      "paint",
      "tile",
      "materials"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Concrete volume estimate for a rectangular pour with waste allowance - cubic meters and liters"
}

What the leaf hashes

{"body":"a6d47ceef02cc7028cf0ea4cb3bc49731fa7395a8782e864252f1cea10dfa929","id":119561,"kind":"listing","method":"baseline/1","observed_us":1793025615917603,"prev":null,"subject":"x402_bazaar:https://saylorinnovations.com/api/construction/concrete?","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. 0xc6ca6b68775d65811da9fc114da3c2ef456a7ea0e09036f6088b875ebf42a122
2. 0x7e03a657cc9e5b191b810be05efe2a4b034ba5b89d211789cd367b4a88b542d7
3. 0xed54dc9c3dca5f784b912f0d062952948eb06ef54393d8a541bc5e2b51d323cb
4. 0xf533eb104316a5ed71e68f1eaf769e0b9ed120e64ac28c6dbe3c2fab713bd028
5. 0x17fe5e5f315299355cba2e4f5af1f2d229fdada478043feb54b5daf25162e076
6. 0x579c81b26c7630706b60dbfa350772d76f5b98abf65ffe7f2ed60b256a0bb968
7. 0x05c7a9fd8418f3747410a899bf36119784d68c8cd4b7884b7bcf5014f45c2b2a
8. 0x8c124d36eface76d3b31cad3ca831f043331f9398555550f178c0da20e0ac62a
9. 0xcbd20ca8a5a9e5e61234e3bec18f76c373018d9ee1d145906aef0eebe99017a3
10. 0xa5d93de518cc5a3e0fcb59e9d61337c743409d708b23c5352bebbbec973ca249
11. 0xcf79908a8c2a5f4d274583b3f75e7aa2d8b29ffc384541425852fe761ae31d56
12. 0x9d99c5dad23613921cdfabc849c2dd3c97729992eaa05c4dab5e86e83ed6d220
13. 0x72e35aac89ebca631656c2b1aecbdc094807d9807f12c22a6ddf35cc1f5e21d6
14. 0x5b20d8aab05225a3497eadcce89d2e2a586a510fb31334793d3f46f88f0157c5
15. 0xe94ca5b798e9899ad611e57835af42266e20f53f44977e487d81365e30972beb
16. 0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae