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Evidence row 8297

Observed , by sync.x402_bazaar/1.

Kind
listing
About
source_record x402_bazaar:https://polynews.news/api/v1/feed
Recorded
Previous row
None: the first of its kind about this subject
Body SHA-256
2d4c958421801f091e050c2c3f87397dc8b07477c92350c69bc2d769535a9adc
Leaf
0xa18e52933905964cea1e10d9701850b4d96282a1332d31a1327ca80cf4334cf7

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://polynews.news/api/v1/feed"
    ]
  ],
  "name": "polynews.news/api/v1/feed",
  "owner_address": "0x6ee49a7872844397fb52870cc07b308ffadc9427",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x6ee49a7872844397Fb52870Cc07b308fFADC9427",
        "scheme": "exact"
      },
      {
        "amount": "1000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
        },
        "maxTimeoutSeconds": 300,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "76xzzgua9K8985GqGMwB946zTFtHvjTd9MfGoTYfys3d",
        "scheme": "exact"
      }
    ],
    "description": "Real-time trade stream with market summaries (2hr rolling window, $500+ trades)",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "limit": "100",
              "minValue": "500"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "data": {
                "marketSummaries": [
                  {
                    "buyVolume": 45200,
                    "marketId": "69317",
                    "netFlow": 7100,
                    "sellVolume": 38100,
                    "tradeCount": 42
                  }
                ],
                "summary": {
                  "accumulatorUptime": 7200,
                  "newestTimestamp": 1747019400,
                  "oldestTimestamp": 1747012200,
                  "pollCount": 160,
                  "totalAccumulated": 1840
                },
                "trades": [
                  {
                    "amount": 2400,
                    "market": "Democratic Presidential Nominee 2028",
                    "outcome": "Gavin Newsom",
                    "price": 0.32,
                    "side": "BUY",
                    "timestamp": 1747019400,
                    "valueUsd": 768,
                    "wallet": "0xa1b2...c3d4"
                  }
                ]
              },
              "meta": {
                "endpoint": "/api/v1/feed",
                "latencyMs": 180,
                "tier": "standard",
                "timestamp": "2026-05-12T04:30:00.000Z",
                "version": "v1"
              }
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "limit": {
                      "type": "string"
                    },
                    "minValue": {
                      "type": "string"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "data": {
                      "properties": {
                        "marketSummaries": {
                          "type": "array"
                        },
                        "summary": {
                          "description": "Accumulator stats",
                          "properties": {
                            "accumulatorUptime": {
                              "description": "Seconds",
                              "type": "number"
                            },
                            "newestTimestamp": {
                              "type": "number"
                            },
                            "oldestTimestamp": {
                              "type": "number"
                            },
                            "pollCount": {
                              "type": "number"
                            },
                            "totalAccumulated": {
                              "type": "number"
                            }
                          },
                          "type": "object"
                        },
                        "trades": {
                          "items": {
                            "properties": {
                              "amount": {
                                "type": "number"
                              },
                              "market": {
                                "type": "string"
                              },
                              "price": {
                                "type": "number"
                              },
                              "side": {
                                "type": "string"
                              },
                              "timestamp": {
                                "type": "number"
                              }
                            },
                            "type": "object"
                          },
                          "type": "array"
                        }
                      },
                      "type": "object"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-26T05:07:28.803Z",
    "quality": {
      "l30DaysTotalCalls": 53,
      "l30DaysUniquePayers": 5,
      "lastCalledAt": "2026-10-26T05:07:28.325Z"
    },
    "resource": "https://polynews.news/api/v1/feed",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Real-time trade stream with market summaries (2hr rolling window, $500+ trades)"
}

What the leaf hashes

{"body":"2d4c958421801f091e050c2c3f87397dc8b07477c92350c69bc2d769535a9adc","id":8297,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793025287593681,"prev":null,"subject":"x402_bazaar:https://polynews.news/api/v1/feed","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (296695 rows).

  1. 0xa18e4447acd0d2f532ba1998b1c6ea79c1871bc26857bd90d6d4289ef1a5d5fc
  2. 0xfd9a23b22afdad949c545302fb26c3e3a83a6e70f02192857834fb6a1f8fbbc9
  3. 0x2f7c2fa38a09e3fcbc5cdeb63c9382666380ec47a0e26d8d94c33413680bf32a
  4. 0xb108b82c2f91b8b4afafbd193968592e4aa4c5777bdea05c34303db2dd551b56
  5. 0xd2b825c83d1c2d12e8299df962cf6d6cf050847bfd82aae643bddfe82b1ac039
  6. 0x616601eba2e75e143dfc2afc536a2a6bc7634f41b7719c1cb12bb9b92a6b428d
  7. 0xac60e716c6718beccd2e53fdb6052958eaed894d83f3a62e8292f2a525545bec
  8. 0x95d25b8b644108320208c8703ff89875b387f5fe90c6984b0d817d05c1485d5c
  9. 0x3fab2ba06a3ec8edb44f17977a116c13dd3f36541fece3e8280de279d24ba3d1
  10. 0xa258d479aaaaa82015c735d0ef4aa282cf307dff00c18952915a153965fc837e
  11. 0x6e2c6fb1ec16c0d8a0fa917725bdfc512e7ed9f39e77d64f0a911d30e68a27de
  12. 0x95576cc3dd18642c859f679cefa1cf80bfc6c690b065916c3585b14e8ef4b1b3
  13. 0xf8d3e004d9a208d2c5e82ab676956d80f8a3c78387c61dad15a3a8269efee0d8
  14. 0x6713795704ddd9c528d421fadd9cc96b0200a4ddbba84f88e718d4968dde888b
  15. 0x62a900133713919f4eed33d8336876b7a6d538233b8a4f3ed03b29aa44f5bad0
  16. 0x1ac20d30773e1f4f2f811540e9a99b5cca9177c9e2e029acc0d80cf3f1d11f0f
  17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
  18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
  19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
Day root
0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
Chained
0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
Published
On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae

How to check it · This row as JSON