Evidence row 2199479

Observed 2 Nov 2026, 19:12 UTC, by sync.x402_bazaar/1.

Kind: listing
About: source_record x402_bazaar:https://energy.halowerk.com/optimizer/cheapest-window
Recorded: 2 Nov 2026, 19:12 UTC
Previous row: None: the first of its kind about this subject
Body SHA-256: ee430967d98a5b33aa7f5566e2cc4080f9bf108fa908b2d74ca3c2e49a02e5a9
Leaf: 0x1b90f9da1fb0ec5d6b345f7173f8491d12c9b84a891d61357e090b5c42cf3cb3

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://energy.halowerk.com/optimizer/cheapest-window"
    ]
  ],
  "name": "HALOWERK Energy",
  "owner_address": "0x2880edfff13100677bf97a3cbdf3bc34771c4e5e",
  "raw": {
    "accepts": [
      {
        "amount": "5000",
        "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": "Flexible-load agents buy this endpoint to schedule a contiguous operating window at the lowest average electricity price.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "duration_hours": 2
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "action": "charge_during_window",
              "avg_price_ct_kwh": "5.475",
              "best_end": "2026-07-14T13:00:00.000Z",
              "best_start": "2026-07-14T11:00:00.000Z",
              "day_avg_ct_kwh": "12.397",
              "duration_hours": 2,
              "savings_vs_avg_pct": "55.8",
              "source": "Cheapest Window Optimizer",
              "timestamp": "2026-07-13T22:51:21.971Z",
              "window": [
                {
                  "end": "2026-07-14T12:00:00.000Z",
                  "price": 5.18,
                  "start": "2026-07-14T11:00:00.000Z"
                },
                {
                  "end": "2026-07-14T13:00:00.000Z",
                  "price": 5.77,
                  "start": "2026-07-14T12:00:00.000Z"
                }
              ]
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "properties": {
                    "duration_hours": {
                      "default": 2,
                      "maximum": 24,
                      "minimum": 1,
                      "type": "integer"
                    }
                  },
                  "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": "2026-11-02T14:56:08.524Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-11-02T14:56:08.214Z"
    },
    "resource": "https://energy.halowerk.com/optimizer/cheapest-window",
    "serviceName": "HALOWERK Energy",
    "tags": [
      "compute-scheduling",
      "depin-workloads",
      "carbon-aware-compute",
      "battery-dispatch",
      "power-trading"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Flexible-load agents buy this endpoint to schedule a contiguous operating window at the lowest average electricity price."
}

What the leaf hashes

{"body":"ee430967d98a5b33aa7f5566e2cc4080f9bf108fa908b2d74ca3c2e49a02e5a9","id":2199479,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646771654586,"prev":null,"subject":"x402_bazaar:https://energy.halowerk.com/optimizer/cheapest-window","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).
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Day root: 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
Chained: 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
Published: On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af

How to check it · This row as JSON