Evidence row 120730

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://saylorinnovations.com/api/transit/boston/alerts"
    ]
  ],
  "name": "Saylor Innovations Transit",
  "owner_address": "0xa2a8df0f7caabea4e120a2568118f141569fc8aa",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:transit:boston-alerts",
          "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": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
          "memo": "saylor:transit:boston-alerts",
          "reference": "FyUfNNg2RroNfD5vdmfDjammea7F9wQhnfiqfYnd7KMC",
          "session": "eyJhcnRpY2xlSWQiOiJ0cmFuc2l0OmJvc3Rvbi1hbGVydHMiLCJyZWZlcmVuY2UiOiJGeVVmTk5nMlJyb05mRDV2ZG1mRGphbW1lYTdGOXdRaG5maXFmWW5kN0tNQyIsInJlY2lwaWVudCI6IjdMU2pmckpmOGZOc0I4VkE5dTdOM1dFbjI1c21RTHBvYjNTdnlVdlhhY3k3IiwibWludCI6IkVQakZXZGQ1QXVmcVNTcWVNMnFOMXh6eWJhcEM4RzR3RUdHa1p3eVREdDF2IiwibWluQW1vdW50IjoxMDAwMCwiZXhwIjoxNzkyMzI0MzQxNjcwfQ.PreVGib9abd0EptxkHmlwA_jh7cQvV8Pju0Kv9-1afo"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      }
    ],
    "description": "Boston MBTA service alerts in effect now, filterable by route",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "route": "Red"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "active_alerts": 1,
              "alerts": [
                {
                  "effect": "DELAY",
                  "header": "Red Line: Delays of about 10 minutes due to a disabled train at JFK/UMass.",
                  "routes": [
                    "Red"
                  ],
                  "severity": 5
                }
              ],
              "route": "Red"
            },
            "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": {
                    "route": {
                      "description": "optional route id, e.g. Red, Orange, Green-B, CR-Worcester (query)",
                      "type": "string"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "active_alerts": {
                      "description": "Number of active alerts",
                      "type": "number"
                    },
                    "alerts": {
                      "description": "Active alerts",
                      "items": {
                        "type": "object"
                      },
                      "type": "array"
                    },
                    "generated_at": {
                      "description": "Time this response was generated (UTC)",
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "route": {
                      "description": "Route",
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "source": {
                      "description": "Data source the values come from",
                      "type": [
                        "string",
                        "null"
                      ]
                    }
                  },
                  "required": [
                    "active_alerts",
                    "alerts"
                  ],
                  "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/v1790235422/bazaar-icons/bc5e2b3d111ebbef.jpg",
    "lastUpdated": "2026-10-18T11:50:21.698Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-10-18T11:50:21.508Z"
    },
    "resource": "https://saylorinnovations.com/api/transit/boston/alerts",
    "serviceName": "Saylor Innovations Transit",
    "tags": [
      "transit",
      "public-transport",
      "boston",
      "alerts",
      "real-time"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Boston MBTA service alerts in effect now, filterable by route"
}

What the leaf hashes

{"body":"6e5de3bc25a29e6d99f4403b7528920931ffd44947e71a9750b5a6dfb75a6971","id":120730,"kind":"listing","method":"baseline/1","observed_us":1793025618535965,"prev":null,"subject":"x402_bazaar:https://saylorinnovations.com/api/transit/boston/alerts","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. 0x37e2921a371657f059599878056a5a58b4731c7686966c3b73c4cd7970b1d570
2. 0xa58abe973075436219bb93847271bdc27fa57064fc90f43acc15408d9af32647
3. 0xa97ef0edf86d00a8e3abc3447cb9312bc9a33a25c592116a41789c2b7957e95e
4. 0x281b0016b9b82f0dd3d1d123cd746fdc2ef3124ab5331483fe1374ae62ba9887
5. 0x6a74e7055cad71e0880f59e5789009ddd78239cfbeab3c6133c90aa9fe7f0e29
6. 0x72a791d54fa8fe4d416ca35ffeab27e22172abd97506c2e93186ceb8a86ccfc7
7. 0xddfde155f0474d8f20e4863bb48ab7ab8f0f2a012c251ab091bb4fb8e9bbcd32
8. 0x02b29fa3b6e04f7e9deb1e2206f3c9b9a1f9c6caac91fc8a9fe3c6118b3ae1a1
9. 0x1ce20812126b1222ee3e342710d3746521bf215e3c38b28fda9cb34e6d3bb871
10. 0xff1ff8dcc12c50635e4a66c3c00beef7e027b751a84ecfd916d28b30b631ab0f
11. 0xac34ddbc48fae726d62603aa0121ea4aa01a5fe05b84c5335b25521c1e72ed07
12. 0x8b23d34f6cd746f123b1e4d09449280800a81e00febe1fd9224b6802057238d5
13. 0xdfc7a920beab71e6882e75c57bf136a5354c4ea989a35108a69046bc62059090
14. 0x4338355a835617a26aa0bfcc971e84eb030d84e2aa840e3c8af958921dd080c7
15. 0x610738e0c43687aded83c613c73de8b5226c73c375858a167436461c522ea213
16. 0x06d71bfa7d8b41d62c8836efc2c601e1cc3772d9453596b2ae4950887f3310ca
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae