Evidence row 2203604

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://energy.halowerk.com/history/prices/stats"
    ]
  ],
  "name": "HALOWERK Energy",
  "owner_address": "0x2880edfff13100677bf97a3cbdf3bc34771c4e5e",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "asset": "USDC",
          "assetTransferMethod": "eip3009",
          "decimals": 6,
          "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": "Statistik für eine historische Preisperiode.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "period": "last-7d"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "avg_eur_mwh": 92.1,
              "max_eur_mwh": 160,
              "min_eur_mwh": 40.2
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "properties": {
                    "period": {
                      "examples": [
                        "last-7d",
                        "last-30d",
                        "2025-Q4",
                        "2024-01"
                      ],
                      "pattern": "^(?:last-[1-9][0-9]*d|[0-9]{4}(?:-Q[1-4]|-(?:0[1-9]|1[0-2]))?)$",
                      "type": "string"
                    }
                  },
                  "required": [
                    "period"
                  ],
                  "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"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-02T15:03:08.88Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-11-02T15:03:08.58Z"
    },
    "resource": "https://energy.halowerk.com/history/prices/stats",
    "serviceName": "HALOWERK Energy",
    "tags": [
      "compute-scheduling",
      "depin-workloads",
      "carbon-aware-compute",
      "battery-dispatch",
      "power-trading"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Statistik für eine historische Preisperiode."
}

What the leaf hashes

{"body":"d4bd9766a64bd95d2a53317c5ea38a9043d10158ebe4accc3ccc9db14b09378c","id":2203604,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646886858141,"prev":null,"subject":"x402_bazaar:https://energy.halowerk.com/history/prices/stats","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. 0xcc3ccd60da57e237a5d881a9808731db91d4750ce14af94fb42597cd10284b93
2. 0x79afe8e220266e85daccdf943c7ad64a6b9c545b0e9036dd98774eec3fd7721c
3. 0x8deed6e9d98e8b19f1f1c416f67a930d1733868d30a41356726369e8465c8ac4
4. 0x4e6e0c0d4458557d696de4795897f9f274b82c526392c0b49f8c2d9dd5c4cbd6
5. 0x4e713495d4b82e30b0916fb77edb840d87122105ed10e123b960d8aa2b87880b
6. 0x97fc8ed13256eb7235e6a60639caf0566c045e25415895434040c9d33d184580
7. 0x5438820fb60c7a2ed1f1fc846b7cf609b777762555b2b3079971fd2a7991d86d
8. 0x77898879a5439242e3d2006ad09a5afaccbe3b3f87e5aab3a7b463c7e60deb01
9. 0xc6f0ce179a629bafca756adcd25c75096d9dde7375c04d499d18ce66e5209011
10. 0x5955e594511b0898563ff35b4b1397b2977d71ffd10fef8265c7622c92c88fbc
11. 0xaf2a199447c969aea5dcc0dd155218feac3378794b903ace57a61900fe249d4b
12. 0x104b0fd7f9e0a9cd51db3ad451e9a16d136da470f6efdf3cf1ad75354f332bc0
13. 0x959c0d70f3f85beefd7b1347751e6e712eeaefce78a57d80eda6882038b85a52
14. 0x4f21464039902a4044b17c93873adb5a93eecc8e977b4e039acb8cd5f4210b4b
15. 0x5b456020389d8e0ef67f16a492c600b5b88189e59398bba308734db7e873e7e4
16. 0x37d31d28d0bd3743650d57e9fbf999efa4592cac831267f83aa125335b35a16b
17. 0xdb8bd933619a267f9790faac9839143d202be46af284371cc369cdf683f897ba
18. 0x98cbbf2c68ab4c0b4db782aeb88bea1f30b02178cf8b5d3d24a931d19492ea6d
19. 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af