Evidence row 76801

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://iot.halowerk.com/v1/ota-sign"
    ]
  ],
  "name": "iotwerk_ota_sign",
  "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": "Canonicalizes firmware hash, version, device model and minimum bootloader version, then produces a SHA-256 manifest digest and HMAC-SHA256 release tag using caller-supplied ephemeral key material. This is a symmetric integrity tag, not a vendor PKI signature or code-signing service.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "bodyType": "json",
            "exampleUrl": "https://iot.halowerk.com/v1/ota-sign/schema#/requestExample",
            "method": "POST",
            "schemaUrl": "https://iot.halowerk.com/v1/ota-sign/schema#/inputSchema",
            "type": "http"
          },
          "output": {
            "schemaUrl": "https://iot.halowerk.com/v1/ota-sign/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": "2026-10-26T00:13:05.747Z",
    "quality": {
      "l30DaysTotalCalls": 13,
      "l30DaysUniquePayers": 7,
      "lastCalledAt": "2026-10-26T00:13:05.331Z"
    },
    "resource": "https://iot.halowerk.com/v1/ota-sign",
    "serviceName": "iotwerk_ota_sign",
    "tags": [
      "iot",
      "ota",
      "integrity"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Canonicalizes firmware hash, version, device model and minimum bootloader version, then produces a SHA-256 manifest digest and HMAC-SHA256 release tag using caller-supplied ephemeral key material. This is a symmetric integrity tag, not a vendor PKI signature or code-signing service."
}

What the leaf hashes

{"body":"03ee2d1012e512f0c651c3832af0159f0dfdde203d5aae422947a5d9e3620b02","id":76801,"kind":"listing","method":"baseline/1","observed_us":1793025492958206,"prev":null,"subject":"x402_bazaar:https://iot.halowerk.com/v1/ota-sign","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. 0xc84abdc7107857403e0ec31575056f4582b611e1dcdfaf3fda17f169697ce51c
2. 0xc416b5d86cce138861155279c1af3c828228946489317928d869684955f944cd
3. 0xdd6d7c1cfa9888e23a5de7ae6a126ab0ebbb0eeec388a01599039590450b219d
4. 0xf77180d6dd6b6f8405ded629aebb8abaa1dbe3dccea19e95dd458831ce707672
5. 0x1024f1f641607525445f50cd84e386c8e630194c40f9f7953b1e2e516f5c31b0
6. 0xb23016766c8f4145fea56d381b7cc955291564e0e7796db614131aac810be9d6
7. 0xceb3d446fbdfc9d17526dd245fb91caf4f90c05f9632c48cf6805e88cfc1af5e
8. 0xa87d90b6fa4aff4daecc20111299a2ae849017aa7ef623bdadd6a102882f1041
9. 0x469a34c3c97adfe074d09a0783fee6072aec7957eb78f6ee3e2dfb639a2ffb62
10. 0x675ae978905879f96dab2ece83376d01eb27968f2044719307dbc7f840ae0cec
11. 0xac575d7ca8c3c7e88957908dda0517fbb35f0894886bb91a97cff3aa71fa23e9
12. 0xde09984239f27618a13932caf48f5d39831fc5021500b0581dce0dabd570bd6e
13. 0x72e35aac89ebca631656c2b1aecbdc094807d9807f12c22a6ddf35cc1f5e21d6
14. 0x5b20d8aab05225a3497eadcce89d2e2a586a510fb31334793d3f46f88f0157c5
15. 0xe94ca5b798e9899ad611e57835af42266e20f53f44977e487d81365e30972beb
16. 0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae