Evidence row 3970570

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://markt.halowerk.com/funding"
    ]
  ],
  "name": "HALOWERK marktwerk",
  "owner_address": "0x2880edfff13100677bf97a3cbdf3bc34771c4e5e",
  "raw": {
    "accepts": [
      {
        "amount": "2000",
        "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 the public perpetual data of Binance USDⓈ-M Futures, Bybit linear and OKX swaps for one BASE/QUOTE pair. Settlement intervals differ per exchange and per contract, so annualized_pct is only computed after normalising to the interval that exchange actually uses, and the formula is part of the answer. current_rate and predicted_rate are strictly separate: where an exchange publishes no forecast, predicted_rate stays null and the reason is named instead of reusing the current rate. next_settl",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "symbol": "BTC/USDT"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "properties": {
                    "symbol": {
                      "description": "Perpetual as BASE/QUOTE, for example BTC/USDT. Most perpetuals are quoted in USDT.",
                      "pattern": "^[A-Za-z0-9]{2,15}/[A-Za-z0-9]{2,15}$",
                      "type": "string"
                    },
                    "venues": {
                      "description": "Perpetual venues to query. Without it all connected ones are used.",
                      "items": {
                        "enum": [
                          "binance-futures",
                          "bybit",
                          "okx"
                        ],
                        "type": "string"
                      },
                      "maxItems": 3,
                      "minItems": 1,
                      "type": "array",
                      "uniqueItems": true
                    }
                  },
                  "required": [
                    "symbol"
                  ],
                  "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": "2026-10-27T10:09:16.257Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-27T10:09:15.858Z"
    },
    "resource": "https://markt.halowerk.com/funding",
    "serviceName": "HALOWERK marktwerk",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Reads the public perpetual data of Binance USDⓈ-M Futures, Bybit linear and OKX swaps for one BASE/QUOTE pair. Settlement intervals differ per exchange and per contract, so annualized_pct is only computed after normalising to the interval that exchange actually uses, and the formula is part of the answer. current_rate and predicted_rate are strictly separate: where an exchange publishes no forecast, predicted_rate stays null and the reason is named instead of reusing the current rate. next_settl"
}

What the leaf hashes

{"body":"46532a486c6ea4738d9c7b1517c86a6dfb10901cc47ea62cc78ad9c1cb3e4ede","id":3970570,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1794083655217719,"prev":3767259,"subject":"x402_bazaar:https://markt.halowerk.com/funding","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-07 (195826 rows).

1. 0x20db5c2cf0a0e026e2be84f881ecb3bc67297e869aa3d4e3a754aa37ed8c6a89
2. 0x8b6ffa49cf50b04e3031655dc93131d60759b9a670bf74049254584760b44b24
3. 0x1aff4682931d69c2bbe579d60e73572c9b4b215518766561b9833b290af8d42d
4. 0xa2f9ae20cecb2cefc323ecb7819fd1212a222fb996369f9ae97fbcb6090f83c8
5. 0x38b712e89c1937c8b9feb20fe5769e4ab82bf9355d3144f450f8c7f043b4c00e
6. 0x51489ca4ef93b052d816c5f89378a08f926e3c992573bfb5f2a8622f2dbf20ee
7. 0xcec556859b7e9e5dcd55d5762593770cad7dd7e19caf9b403cd779801eb6ebc8
8. 0xa5f8bbe989c53310c7342daa3087ad9b6e9f5a4f628e4dcfcb3e8da4048f559e
9. 0xb3928b12c7469a9e90ed1b86d84f795ca68b529688bccf5539bbd968f350a316
10. 0x1cd2031e6063f603059a2de7b4b00b115c5a6b22018d3e7e2c82270e18aebd99
11. 0x9ad11b4f5a04917f86edd7a931b22d799c024efc5cef4760be06ac9e2cb9407f
12. 0x658b7373cd6d8544517d8099d6279956da95b5312cf52f3f1b5974a8163622cd
13. 0x78453dc4e9c270f39d15a1727634a7f24b351d301dd0f7a85d7c6f2ffdf65ffd
14. 0xd1a33ae0335e7cea3634b4772bc65ab22ff7615b5af0fac5752d839e8f2c17ec
15. 0x22002567dfb80a697b73b13f0cc7ab99ac0c0bd9ea84bf4883eeb09f86036e24
16. 0x80bdd907e4cabf074c5e8d919e88abbc805de47d0c5c142e281a67157f82926f
17. 0x54292a94f447f1fd33c01b5c99da465043f11022958626a2ea562c457fef697a
18. 0xff23fa8a9de3f957315ef0dfe7e8d8f6b1a51dae05fef7615c59794e019ff05c

Day root

0x17da9e85e1b138541355d33543ff34e3503cd3a49d37728fb53643e2a0416a2d

Chained

0xed34bd4af17282643de8cb9591c84d0aa1b39e1e9ae9864941e543f5a15718cb

Published

On Arc Testnet, block 71280839: 0xc3f6784179e0ca32236ba89472473e882a81d03fcc5ce27ca58ded2e01e112aa