Evidence row 76799

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://iot.halowerk.com/v1/lora-coverage"
    ]
  ],
  "name": "iotwerk_lora_coverage",
  "owner_address": "0x2880edfff13100677bf97a3cbdf3bc34771c4e5e",
  "raw": {
    "accepts": [
      {
        "amount": "3000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "currency": "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",
        "recipient": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
        "scheme": "exact"
      }
    ],
    "description": "Computes free-space loss at one metre, applies a caller-supplied path-loss exponent over distance, then reports estimated receive power and margin against receiver sensitivity. This planning estimate does not model terrain, Fresnel obstruction, interference, antenna mismatch or regulatory duty cycle.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "bodyType": "json",
            "exampleUrl": "https://iot.halowerk.com/v1/lora-coverage/schema#/requestExample",
            "method": "POST",
            "schemaUrl": "https://iot.halowerk.com/v1/lora-coverage/schema#/inputSchema",
            "type": "http"
          },
          "output": {
            "example": {
              "coverage_estimate": "margin_at_least_10_db",
              "estimated_path_loss_db": 122.9648,
              "estimated_receive_power_dbm": -107.9648,
              "free_space_loss_1m_db": 31.2204,
              "link_margin_db": 29.0352,
              "method": "log-distance path-loss link budget",
              "omitted_factors": [
                "terrain",
                "fresnel_obstruction",
                "interference",
                "antenna_mismatch"
              ]
            },
            "exampleUrl": "https://iot.halowerk.com/v1/lora-coverage/schema#/outputExample",
            "schemaUrl": "https://iot.halowerk.com/v1/lora-coverage/schema#/outputSchema",
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "additionalProperties": true,
          "properties": {
            "input": {
              "additionalProperties": true,
              "properties": {
                "bodyType": {
                  "const": "json"
                },
                "exampleUrl": {
                  "format": "uri",
                  "type": "string"
                },
                "method": {
                  "const": "POST"
                },
                "schemaUrl": {
                  "format": "uri",
                  "type": "string"
                },
                "type": {
                  "const": "http"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType"
              ],
              "type": "object"
            },
            "output": {
              "additionalProperties": true,
              "properties": {
                "exampleUrl": {
                  "format": "uri",
                  "type": "string"
                },
                "schemaUrl": {
                  "format": "uri",
                  "type": "string"
                },
                "type": {
                  "const": "json"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-26T00:12:14.317Z",
    "quality": {
      "l30DaysTotalCalls": 13,
      "l30DaysUniquePayers": 7,
      "lastCalledAt": "2026-10-26T00:12:13.903Z"
    },
    "resource": "https://iot.halowerk.com/v1/lora-coverage",
    "serviceName": "iotwerk_lora_coverage",
    "tags": [
      "iot",
      "lora",
      "radio"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Computes free-space loss at one metre, applies a caller-supplied path-loss exponent over distance, then reports estimated receive power and margin against receiver sensitivity. This planning estimate does not model terrain, Fresnel obstruction, interference, antenna mismatch or regulatory duty cycle."
}

What the leaf hashes

{"body":"ce800ce3b384e3719eb0f407e087703d08b1073f17db60685a3d7932e4a52722","id":76799,"kind":"listing","method":"baseline/1","observed_us":1793025492955372,"prev":null,"subject":"x402_bazaar:https://iot.halowerk.com/v1/lora-coverage","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

1. 0x4024416ca49e26ba69f18905a0b6d16f4e44175e9ea8c9156932b87c9e6a251a
2. 0x7f8aac045094a4e07f16be7c8b7735b83df02daaf4c19cfd37ef064afe4fcf43
3. 0x8940c8a0a8947f85fa17243359bb896daf27dbf551d4a0c0677ac5b829c135d2
4. 0x1b8e4e0315e9ed1a3a1104879f8d212ddf180fcb85a0666084793b338b60d2be
5. 0x32c899dd71f4816398eb07d166c4c0876b0728abb6ff1029157e80624569277c
6. 0x46d5f38fdc46c696ae82248dc6e5a8674abb814e16243128c8201e5ebb24c966
7. 0x2a93292858a3ca9d59a34c4a4b30a34e1a9f1d6f498785195236e04e50e9e4a0
8. 0x993ccfa291783808cc772b47de0b063b7fbb7ca2d16d57624d447d2586b5cfcb
9. 0xeb1669d39966a8d4755a6ddea11313c434c7f816be10346ab058765a45cbff94
10. 0x4d366760261fa90306fab3a8c581c54f763c4071921cde42a107575598a3bf45
11. 0x6ec69a305a23b604ab679d75c3502d235953d73d9c2a74b16fb74b49af695fa0
12. 0xe2bb2a30c74e0bf16b8b75c332bdd45334d0338bef3f3022b7ea7b55718e1369
13. 0xd406739acce2ba016f8d49081b15f266a4ea4a0b0fc5ef171c89c8fd2dda4d80
14. 0x8b27a4c21bf4ba962fd008c8f4300bc6953764a5032b9ab0cfe696b318c45326
15. 0x4b52a97f7a80ff7778a702b85267b8d2e5c93ce160942656435c29ae7be68bf4
16. 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae