Evidence row 120602

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://saylorinnovations.com/api/shipping/carbon"
    ]
  ],
  "name": "Saylor Innovations  Shipment Car",
  "owner_address": "0xa2a8df0f7caabea4e120a2568118f141569fc8aa",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:shipping:carbon",
          "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": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb",
          "memo": "saylor:shipping:carbon",
          "reference": "GCZm5PX4y75R1Rw3bBQYzwAAoP8UCg4w64T1xuxCu57B",
          "session": "eyJhcnRpY2xlSWQiOiJzaGlwcGluZzpjYXJib24iLCJyZWZlcmVuY2UiOiJHQ1ptNVBYNHk3NVIxUnczYkJRWXp3QUFvUDhVQ2c0dzY0VDF4dXhDdTU3QiIsInJlY2lwaWVudCI6IjdMU2pmckpmOGZOc0I4VkE5dTdOM1dFbjI1c21RTHBvYjNTdnlVdlhhY3k3IiwibWludCI6IkVQakZXZGQ1QXVmcVNTcWVNMnFOMXh6eWJhcEM4RzR3RUdHa1p3eVREdDF2IiwibWluQW1vdW50IjoxMDAwMCwiZXhwIjoxNzkxODExNjQzNjM1fQ.a1WOH4-56nrQLdpp8qj4KEiQf5wXteg1A90iOY1yrD8"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      }
    ],
    "description": "Shipment carbon estimate from cargo mass, distance and mode (air, road, rail, sea) in kg CO2e",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "type": "http"
          },
          "output": {
            "example": {
              "distance_km": 1000,
              "estimated_kg_co2e": 62,
              "formula": "kg CO2e = weight tonnes × distance km × mode factor",
              "mode": "road",
              "scope_note": "Screening estimate only; not a carrier declaration.",
              "weight_kg": 1000
            },
            "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"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "distance_km": {
                      "type": "number"
                    },
                    "emission_factor_kg_co2e_per_tonne_km": {
                      "type": "number"
                    },
                    "estimated_g_co2e": {
                      "type": "number"
                    },
                    "estimated_kg_co2e": {
                      "type": "number"
                    },
                    "factors": {
                      "type": "object"
                    },
                    "formula": {
                      "type": "string"
                    },
                    "mode": {
                      "type": "string"
                    },
                    "rounding": {
                      "type": "string"
                    },
                    "scope_note": {
                      "type": "string"
                    },
                    "source_note": {
                      "type": "string"
                    },
                    "tonne_km": {
                      "type": "number"
                    },
                    "weight_kg": {
                      "type": "number"
                    }
                  },
                  "required": [
                    "weight_kg",
                    "distance_km",
                    "mode",
                    "estimated_kg_co2e",
                    "formula",
                    "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": "2026-10-12T13:25:23.693Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-12T13:25:23.5Z"
    },
    "resource": "https://saylorinnovations.com/api/shipping/carbon",
    "serviceName": "Saylor Innovations  Shipment Car",
    "tags": [
      "shipping",
      "carbon",
      "eta",
      "freight-class",
      "emissions"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Shipment carbon estimate from cargo mass, distance and mode (air, road, rail, sea) in kg CO2e"
}

What the leaf hashes

{"body":"25e43ce057623ce0d4fe9a40fcef0efe3899b65029939238d862cf419627fee7","id":120602,"kind":"listing","method":"baseline/1","observed_us":1793025618326113,"prev":null,"subject":"x402_bazaar:https://saylorinnovations.com/api/shipping/carbon","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. 0x301588ac9b5e9fb5dcbdb8577179052420e2a20b04e1e0150bf439cee71f5461
2. 0x9593fba75ba7bfc0062fad1d171bd31071c4ec20feb04cf5a216df2e2b08b3fa
3. 0xba4b4df66b68ba238eae63ab448a049f2a1a3d00c1eb0568064b02f7214e608f
4. 0xfafaf893813b19358774429aebd3d166df5720532b201d9e5ac4e6a52b75ef40
5. 0xce458163d981773f6aaa7968f8fcb6a6e712765bf93c33a159d9bdbf9324066b
6. 0x576878b11adab6e475573acb461f3a430a0b955510c83fed7f877ee62964a1a0
7. 0x65166c17a40f2eb2bca95fd163997f6d8daced8ade8bdd12b5d4b921a492e669
8. 0xc560f89de8b353398271c0e6e4d4e0c4af28f4c95fd6978037d3dd3b73c3082e
9. 0x6fc7e2e45769dc8be34332b70e4648d5b6ef31ecf6358f59aec6d50f7df8095f
10. 0xfc41c6565c167c5fee646cb3779bde7c2fc51d01a9e07093c87ead9e962c2976
11. 0x66b4d790d6ae725a0af009d5a6edacaec5a6147d597bc8410a97be11d56a00d1
12. 0xd85c7204d76d26255c94ef4caa12c05addd08238caa5cdc3888ea60b74e6b940
13. 0x36a44931b230976c04691d90bf3a25ed4111d74c78b672850d8025a911ca88dd
14. 0x683955a5b2250ad50568d022a6580d8739b6aff1356779d72a773b088e7c289c
15. 0x610738e0c43687aded83c613c73de8b5226c73c375858a167436461c522ea213
16. 0x06d71bfa7d8b41d62c8836efc2c601e1cc3772d9453596b2ae4950887f3310ca
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae