Evidence row 54815

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://odds.genexxis.com/market"
    ]
  ],
  "name": "odds.genexxis.com/market",
  "owner_address": "0x9287e3102d411029025c7617d75245bfc7920f17",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x9287e3102D411029025C7617d75245BFc7920f17",
        "scheme": "exact"
      }
    ],
    "description": "One Polymarket or Kalshi market in detail: implied probabilities, last price, best bid/ask, spread, volume, open interest, 1-day price change and hourly price history for the last 24 h.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "id": "KXFEDDECISION-26OCT-H0",
              "venue": "kalshi"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "bestAsk": 0.93,
              "bestBid": 0.92,
              "id": "KXFEDDECISION-26OCT-H0",
              "lastTradePrice": 0.93,
              "openInterestContracts": 2853797,
              "outcomes": [
                {
                  "name": "Yes",
                  "probability": 0.925
                },
                {
                  "name": "No",
                  "probability": 0.075
                }
              ],
              "priceChange": {
                "oneDay": 0.01
              },
              "priceHistory": {
                "change24h": 0.01,
                "points": [
                  {
                    "p": 0.93,
                    "t": "2026-10-24T20:00:00.000Z"
                  }
                ]
              },
              "question": "Will the Federal Reserve Hike rates by 0bps at their October 2026 meeting?",
              "venue": "kalshi"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "id": {
                      "description": "Polymarket market id, slug or condition id; Kalshi market ticker (as returned by /search)",
                      "type": "string"
                    },
                    "venue": {
                      "description": "polymarket or kalshi",
                      "type": "string"
                    }
                  },
                  "required": [
                    "venue",
                    "id"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      },
      "builder-code": {
        "info": {
          "s": [
            "cdp_sdk_server"
          ]
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "additionalProperties": false,
          "properties": {
            "a": {
              "description": "App builder code",
              "pattern": "^[a-z0-9_]{1,32}$",
              "type": "string"
            },
            "s": {
              "description": "Service builder codes",
              "items": {
                "pattern": "^[a-z0-9_]{1,32}$",
                "type": "string"
              },
              "maxItems": 11,
              "type": "array"
            },
            "w": {
              "description": "Wallet builder code",
              "pattern": "^[a-z0-9_]{1,32}$",
              "type": "string"
            }
          },
          "type": "object"
        }
      },
      "eip2612GasSponsoring": {},
      "erc20ApprovalGasSponsoring": {}
    },
    "lastUpdated": "2026-10-26T11:48:48.352Z",
    "quality": {
      "l30DaysTotalCalls": 4,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-26T11:48:47.801Z"
    },
    "resource": "https://odds.genexxis.com/market",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "One Polymarket or Kalshi market in detail: implied probabilities, last price, best bid/ask, spread, volume, open interest, 1-day price change and hourly price history for the last 24 h."
}

What the leaf hashes

{"body":"4eaaadedf5aab097605613f073af0bb33ae1817ce11c293969a0fd2d41988b3a","id":54815,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793025433999960,"prev":null,"subject":"x402_bazaar:https://odds.genexxis.com/market","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. 0x2a30f2477e813232623b8a3bb217062685e7468b9f77235a2ca9ded62ab2c160
2. 0x5865d589d8508cfd8ef1f3e1335a8eb183b1eda6246d4207906c5a7ef84dbce7
3. 0xdd3a4c970fb4c9063c74073d26de0be3007173f365d0be96b0a82c7182924bb3
4. 0x524142aaa3d2338906768e1e56487f98d9d3ec49fbc295a1ac63e80041973245
5. 0xe1831cf08a6a9c9d0fcce9525c00ecfc7c11ebd87f4c22a02bc6e2c3d9a55250
6. 0x06baa96a0f516a8c29205c512fa5091e12f3026b60c1c572a48cd0ad610f2ecd
7. 0x813a594cb66c423b6489e59a8ba6896f0ddce236c565acb499a8d8acb6c57974
8. 0x5e0c654f4d068d5ee99eaeb58d776a4150c20ac85a27eb4025871532620f8966
9. 0x90cf978de7063c01f8056504e264fffe8b4dce6b7e0f25838ce2b901625136df
10. 0xceecb11ae941a028ba38b36bebeaea0d1db672b60f285af8fdaeb552f5fba197
11. 0x7b0bb4483af5e03d9f02e715a84d790ec3df1fc57d38f1d1a5ed296a7e822d7f
12. 0xeab0020f03650c1a79ed79927ae9d808c59a41295a86d1285582516590c954e6
13. 0x16a8fb19a5e4f4535e7cb3fce5c15ecfa188586bb74e347ee71164f8af27dfe1
14. 0xd843afcced75dedd39194ff9bd12326b88099e6112686db2299392d022dc3146
15. 0xc3a6a3ae44ec0da1848b16d40c45d7aac97a67352eea8df18e0f26edabea8a2f
16. 0x06d71bfa7d8b41d62c8836efc2c601e1cc3772d9453596b2ae4950887f3310ca
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae