Evidence row 548355

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": 5,
      "l30DaysUniquePayers": 5,
      "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":"8bcc04bfd0d1afe5ccce2011acaa230e5d75b154ae224c87272d674e068a9b79","id":548355,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793133295887796,"prev":453273,"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 2026-10-27 (273461 rows).

1. 0x2c545706b54d0a1ab500be270699469a3d475580bcce3f166b2157e136c1fa6d
2. 0x8d839a7b87c7c75538a9f4ba7a4e4274de7fb3e4e5e20f9c9070b782044b1c1a
3. 0x0e0b9ef5b1caef5a02b10d60b188b8841e34707a98011212cbd6c1b3141eb0d2
4. 0x726dc26810ed5477fec0a8401d5cb99d652dc6eb7f5a080fbfaec0b2aeef0af0
5. 0x6d922a9d0dd11962fc7850e010171417305db15948bd568a2270dc703f34085f
6. 0x995da3915e38b51fa25774b5ccf94abc76b67ad53095407cf31b1abb3a100666
7. 0x770a9431bc85142b62c3ec6188e031b2c12590b7b79be93d01406bbee1734a23
8. 0x10c5b6341496751f54126fd491ef8190ce46676ae9523e557490b08828e710c4
9. 0xc36002fcad58dc4c9c600504d0300e3bb8040059875ae08ded4270f982512d4b
10. 0x9f38b2d0cdf030f1ca9ca51487a6c76c5a9623e4e45659d35a1fa1a6e036ec3c
11. 0x763c44f231f5e75793734fa25fb1791b7269f0745f8d34ba7ac82bc2806e3367
12. 0x7ba1b835277802a22a6f62a758420094404a75d3c14f34dd88b403fbf174b26b
13. 0xf9e544d10b80657275e1e196da89ba5336a7cc49eaa0d6d801fb5d632cf5deec
14. 0x8ff18b1523f9fbdd16a5796cbe184b46854c06256508af8de5509b598370c725
15. 0xa383a1cfe9b3f6af67eb4c7642564b9424d46d7fca90e7ba175d549f8b67dd0c
16. 0x52efa60e0c3d8525486d2310eb3b6b566c9677c64fd1f819edb072cf101bcbdb
17. 0x22c1fb9487ee0b9732fa017a0cc321eb27a60c08450d112f755089796e12cb1c
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4