Evidence row 120731

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://saylorinnovations.com/api/transit/boston/arrivals"
    ]
  ],
  "name": "Saylor Innovations Transit",
  "owner_address": "0xa2a8df0f7caabea4e120a2568118f141569fc8aa",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:transit:boston-arrivals",
          "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": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:transit:boston-arrivals",
          "name": "USD Coin",
          "note": "Polygon 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": "eip155:137",
        "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:transit:boston-arrivals",
          "name": "USD Coin",
          "note": "Arbitrum 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": "eip155:42161",
        "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
          "memo": "saylor:transit:boston-arrivals",
          "reference": "byJagC8rmnpdSVVqZokYSNJ4jWiK6H2V2YDSLJ2YRgo",
          "session": "eyJhcnRpY2xlSWQiOiJ0cmFuc2l0OmJvc3Rvbi1hcnJpdmFscyIsInJlZmVyZW5jZSI6ImJ5SmFnQzhybW5wZFNWVnFab2tZU05KNGpXaUs2SDJWMllEU0xKMllSZ28iLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOiJFUGpGV2RkNUF1ZnFTU3FlTTJxTjF4enliYXBDOEc0d0VHR2tad3lURHQxdiIsIm1pbkFtb3VudCI6MTAwMDAsImV4cCI6MTc5MjQ3NzY4NTczMH0.ltp7ZQLY9u2GA3NS7hlnLhPL0RoeOfMZpqw8R7QoSMo"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
        "extra": {
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
          "memo": "saylor:transit:boston-arrivals",
          "reference": "3sFftzS9W9uAFoPwg8TTU9xKZbjvKFcWr84doTxHshC7",
          "session": "eyJhcnRpY2xlSWQiOiJ0cmFuc2l0OmJvc3Rvbi1hcnJpdmFscyIsInJlZmVyZW5jZSI6IjNzRmZ0elM5Vzl1QUZvUHdnOFRUVTl4S1pianZLRmNXcjg0ZG9UeEhzaEM3IiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjoiRXM5dk1GcnphQ0VSbUpmckY0SDJGWUQ0S0NvTmtZMTFNY0NlOEJlbndOWUIiLCJtaW5BbW91bnQiOjEwMDAwLCJleHAiOjE3OTI0Nzc2ODU3MzB9.zxq-lezsdOnq5xcKqI4bY_LT6A9rWLzLVXPDjGljGgY"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      },
      {
        "amount": "92866",
        "asset": "So11111111111111111111111111111111111111112",
        "extra": {
          "memo": "saylor:transit:boston-arrivals",
          "native": true,
          "note": "Native SOL: send lamports with a system transfer, not an SPL transfer. Price is quoted live and this quote expires in 120s.",
          "quotedLamports": "95739",
          "reference": "CKLhtd4mxh2Wbc6ZLGXFhS9jqKi6DhTT27Y9HkDrjaKx",
          "session": "eyJhcnRpY2xlSWQiOiJ0cmFuc2l0OmJvc3Rvbi1hcnJpdmFscyIsInJlZmVyZW5jZSI6IkNLTGh0ZDRteGgyV2JjNlpMR1hGaFM5anFLaTZEaFRUMjdZOUhrRHJqYUt4IiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjpudWxsLCJtaW5BbW91bnQiOjkyODY2LCJleHAiOjE3OTI0Nzc2ODU3MzB9.XxsBBVb5kdslKl4wQ939B1UbwtInRJtq4Rj5Hv_4Pmw",
          "solUsdPrice": 104.45
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      }
    ],
    "description": "Boston MBTA real-time departures at any station - subway, commuter rail and bus, with minutes away",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "stop": "Park Street"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "arrivals": [
                {
                  "arrives_in_min": 4,
                  "destination": "Alewife",
                  "direction": "North",
                  "line": "Red Line",
                  "time": "2026-09-24T19:40:00-04:00"
                }
              ],
              "count": 1,
              "found": true,
              "stop": "Park Street"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "stop": {
                      "description": "station name, e.g. Park Street, South Station (query)",
                      "type": "string"
                    }
                  },
                  "required": [
                    "stop"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "arrivals": {
                      "description": "Upcoming arrivals",
                      "items": {
                        "type": "object"
                      },
                      "type": "array"
                    },
                    "count": {
                      "description": "Number of items returned",
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "found": {
                      "description": "True when the lookup matched a record",
                      "type": "boolean"
                    },
                    "generated_at": {
                      "description": "Time this response was generated (UTC)",
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "lat": {
                      "description": "Latitude in decimal degrees",
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "lon": {
                      "description": "Longitude in decimal degrees",
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "source": {
                      "description": "Data source the values come from",
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "stop": {
                      "description": "Stop the data is for",
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "stop_id": {
                      "description": "Stop id identifier",
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "town": {
                      "type": [
                        "string",
                        "null"
                      ]
                    }
                  },
                  "required": [
                    "found"
                  ],
                  "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": "2026-10-20T06:26:05.771Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-10-20T06:26:05.596Z"
    },
    "resource": "https://saylorinnovations.com/api/transit/boston/arrivals",
    "serviceName": "Saylor Innovations Transit",
    "tags": [
      "transit",
      "public-transport",
      "boston",
      "arrivals",
      "real-time"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Boston MBTA real-time departures at any station - subway, commuter rail and bus, with minutes away"
}

What the leaf hashes

{"body":"eeb84b8c4e97e4f463da7fda47db570309ff4360a6925edda7744f09198cf117","id":120731,"kind":"listing","method":"baseline/1","observed_us":1793025618537314,"prev":null,"subject":"x402_bazaar:https://saylorinnovations.com/api/transit/boston/arrivals","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. 0x7576cd479c2193155d14e0e805d98482ea66c11bdf378e45e90904ec809ff8c2
2. 0x7fcf33423df3555d5438c66afa9d586c16b3422d1aee6db15633250830236459
3. 0x3dd81e044d9585c33a0c18ead427e1319f62efba56e66c8d5b94c51c8aa5033a
4. 0x2ec012c6f62d84a00be7c5aa5cb4a1ca6dd7bace23d3b3d578a0045785c0d52e
5. 0x8f8182d3ca66ac1f8f411583cf4ccdcde900571dfedff790cb8f8d84b62d85c9
6. 0xd09a0a7792c290e730a377f5078e2f5a9af54a1112eff20204e48d920c50db63
7. 0x6c812d8903b660bbf70cb10cab0bb779831c8e2aa389e45c6244199beeda7a92
8. 0xc7fe1ed58e029653034d4cbe4734e2c7e0f244a4edb6e330552f2f20dc8692f5
9. 0xd602fca7227e99e8893cc88a696f76e9b6f6198d893af0965dac88bbec212216
10. 0xa5cab88755e99fd7d4830115b4e412f63a460a19c270832f53f6e32be125c3da
11. 0xff8296d2db87846f2b3d9a7a4926ee8ea17587a9a2960c155a4f0e1d36206dd8
12. 0x43ccc5fffcdb82bff6ecf4ac7157c905b45d2f0362e7f7fbe908de1250b9533c
13. 0xdef3cab0b4070d8ad7f4f91288da4881d19789f131b1b353621df79df04a0617
14. 0xc4fe2177880ea1b0e82b6fe4c270090fd0fbe5af3a42a8cbf6a6ba2fa35625f6
15. 0x15039087bf60ae9b06b756ec3cbc299760e59923a438bbd91e34d105186db0ed
16. 0x2b6e23e3624a1b66e1d2298cfbce99a93ce6b13d24a58112a71802d79c5f7a76
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae