Evidence row 2241679

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://defi.halowerk.com/oracle/crosscheck"
    ]
  ],
  "name": "HALOWERK defiwerk",
  "owner_address": "0x2880edfff13100677bf97a3cbdf3bc34771c4e5e",
  "raw": {
    "accepts": [
      {
        "amount": "4000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "asset": "USDC",
          "assetTransferMethod": "eip3009",
          "eip712Domain": {
            "chainId": 8453,
            "name": "USD Coin",
            "verifyingContract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "version": "2"
          },
          "name": "USD Coin",
          "network_name": "Base Mainnet",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
        "scheme": "exact"
      }
    ],
    "description": "Reads a Chainlink aggregator directly from the chain, pulls Pyth and RedStone, queries public exchange tickers and derives spot plus a 30-minute TWAP from the deepest Uniswap V3 pool of the asset against USDC on the requested chain. Every source carries its own age in seconds, its own price and a link to verify it. Nothing is smoothed into an average: the median is stated alongside the full list and the maximum deviation in basis points, because disagreement between sources is the finding, not a",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "asset": "ETH",
              "chain": "base"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "properties": {
                    "asset": {
                      "description": "Asset symbol. Only assets whose sources were individually verified against the chain are available.",
                      "enum": [
                        "ETH",
                        "BTC",
                        "USDC",
                        "USDT",
                        "DAI",
                        "LINK",
                        "CBETH",
                        "AERO"
                      ],
                      "type": "string"
                    },
                    "chain": {
                      "description": "Chain the on-chain sources are read from. Off-chain sources are chain independent.",
                      "enum": [
                        "base",
                        "ethereum",
                        "arbitrum",
                        "optimism",
                        "polygon"
                      ],
                      "type": "string"
                    },
                    "oracles": {
                      "description": "Optional filter for source types. Omitted means all available types.",
                      "items": {
                        "enum": [
                          "chainlink",
                          "pyth",
                          "redstone",
                          "cex",
                          "dex_spot",
                          "dex_twap"
                        ],
                        "type": "string"
                      },
                      "type": "array"
                    }
                  },
                  "required": [
                    "chain",
                    "asset"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-02T14:51:31.832Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-11-02T14:51:31.414Z"
    },
    "resource": "https://defi.halowerk.com/oracle/crosscheck",
    "serviceName": "HALOWERK defiwerk",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Reads a Chainlink aggregator directly from the chain, pulls Pyth and RedStone, queries public exchange tickers and derives spot plus a 30-minute TWAP from the deepest Uniswap V3 pool of the asset against USDC on the requested chain. Every source carries its own age in seconds, its own price and a link to verify it. Nothing is smoothed into an average: the median is stated alongside the full list and the maximum deviation in basis points, because disagreement between sources is the finding, not a"
}

What the leaf hashes

{"body":"6f5bf0a2ae9a858235f5e1b35feb8b28df2b8df934346e42ddac3f758b1a1a5b","id":2241679,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793647629643732,"prev":null,"subject":"x402_bazaar:https://defi.halowerk.com/oracle/crosscheck","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-02 (444186 rows).

1. 0xede075043757d543202d960c369d21c644a6c95201ae972b744e54adc63d7814
2. 0xd4791706ffbb8ff24371e2b9a04855383386a1e0a759197915c29f097b7db77e
3. 0x5dbf06eed3110910220990943407583ff7d1b8af8931bd46c894ccdbdaecb725
4. 0x39beae714d2b633e7135a8f4c1017d7d1c055cc08d7fb86a1152027733b28d63
5. 0x42e933ddab3955088d3fca736fe231a624ace3617cb98c57ef8310c73145d5b0
6. 0x0dbae27810682b418b712291593b38b640437ec2ac993ca4b341368103c242c6
7. 0xcdc723cbb554e69d9e7f93260334b26bd5a9b4836ee86ca5a0a654ba66a6ddca
8. 0xd7a3fa6ce26669a7a9203e81be57abb13f2bc4c11475f256ebccd209c8ebf05a
9. 0xa5c231a4524ed72200519b1f96d7d54fd624e77a8fe803df98838fefd1006c65
10. 0x9053d5bac47b2eb871c817939144ee7e0ae39338220b3927cee209062946bedc
11. 0x3e8e0a80d0d1e6892613c589815216d3f150228df9977c0e1624cab3ea6ebfdc
12. 0x81186f1d3fe58c5a37fc5a986c2e4440f453481f9e7d23a13c45f48adcec0bb2
13. 0x56222576ccb9eb1523f81d1cc3cad919b4c5bb42ade03a1c402e7008640051ad
14. 0xbb465466dac90179fd91fd4d3b6985e80736d1ab4662dc57a78b5e5098d6f074
15. 0xde6a8fd6590b70565baa6078cbc8add8d94950fe959ebaf8c3716adcdbd78aa8
16. 0x6dd7e4db65395e8670c7c2747d44fec79e03305934ef4746bf5dbca04ec6ec49
17. 0xec5d643575d83c9e07e65deeef71943b53cbf3007e7e2b9a6ef414081509b0cc
18. 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af