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Evidence row 278290

Observed , by sync.x402_bazaar/1.

Kind
listing
About
source_record x402_bazaar:https://polynews.news/api/v1/feed
Recorded
Previous row
#234202
Body SHA-256
cd70e90233842af9ea335214e89dccdcf6f1b6d542e7735e4d046f6a07db4336
Leaf
0xb55f88c23480fa2e5a60cf86e08d1290320ac16ff51fd3c6bbde1dc7fe18daa7

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": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
        },
        "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": "2026-10-26T15:25:17.685Z",
    "quality": {
      "l30DaysTotalCalls": 54,
      "l30DaysUniquePayers": 5,
      "lastCalledAt": "2026-10-26T15:25:17.369Z"
    },
    "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":"cd70e90233842af9ea335214e89dccdcf6f1b6d542e7735e4d046f6a07db4336","id":278290,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793042063606124,"prev":234202,"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. 0xb55f698c12f5d3d9a606faacb85e202ea8888d283c4ece63584b8bd036912094
  2. 0xdff61e740ffeb361d99ad254faa72ccf54b0f014563a28064f07b5ee98943f54
  3. 0x7a3d71993fad4a5e6a979ac31442c9ca9848b04f6dad6600bb60c00033bb8fd5
  4. 0xdfdd4ca267fb68bab2d0df3b0dff00f7e47f7edd13555f4a030c31d5167860e1
  5. 0x402aecd2876b9eedcd4f46d9b41563eee44ff2669a0917da4bc52f7e723a2f1f
  6. 0x67e97e446e4e8a60d04ff1876fa5bc626f0ceed89cfdbaad2467cac88b450b25
  7. 0x90d907656d6ea04b67c9205c2aaee6398c473c0b96b351b400818826c1de2207
  8. 0x4f70df97b82c43afef4dd705029249c95dc129b13ba5931b2741df080a73e5b4
  9. 0x4a395832b96531e5dad890a69b905731226c55bcaecd7094b9976c1e1861cde9
  10. 0x29d8926a104518c165350885a541887278c9813fe33bc83e56dff05bb21358ce
  11. 0x0f199646652e20987f8f0e4e8bd21993538b0737cd758d5cbc6ebcaaa02763a3
  12. 0x7a0f1751de1946feff7d8c8afc737dcc4d35f110809c15aa0fdb8363a9e31b2b
  13. 0x0d86419ca1dd0b62fd8b22ea2e8c74d441312cec3116a467bea429b43e026565
  14. 0x083427e39db4dd470662401f6db5db8fadf084fc4274cf8621b368416952b78b
  15. 0x1a74ed3b3756b9cd946da49701bcec120ec88645013da99fa9eea60b39e1a570
  16. 0x123ec8bee20ddc55223eeef5a4f4d6c4b6416515adbb911c56759f5cde56e452
  17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
  18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
  19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
Day root
0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
Chained
0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
Published
On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae

How to check it · This row as JSON