Evidence row 283991

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.nexismvp.com/market/gas-audit"
    ]
  ],
  "name": "Kronos Gas Audit",
  "owner_address": "0x3b59f268ebc38c5f43b8b9be37238bf43378ad87",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x3B59f268EbC38c5F43B8B9bE37238bf43378Ad87",
        "scheme": "exact"
      }
    ],
    "description": "Audit real gas spend across up to 20 Base mainnet transaction hashes you provide — total/average gas used, cost in ETH, per-tx breakdown. POST body required. Experimental/informational only — not financial advice.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "chain": "base",
              "tx_hashes": [
                "0x67ccc8ae0a27d2f4dbca4ebbf047e05521350dff34e2f99c36ac878f22941282"
              ]
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "average_gas_used": 21000,
              "total_gas_cost_eth": 1e-7,
              "total_gas_used": 21000,
              "transactions": [
                {
                  "gas_price_gwei": 0.005,
                  "gas_used": 21000,
                  "status": "success",
                  "tx_hash": "0x..."
                }
              ]
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "chain": {
                      "description": "Only 'base' supported currently",
                      "enum": [
                        "base"
                      ],
                      "type": "string"
                    },
                    "tx_hashes": {
                      "description": "Up to 20 transaction hashes to audit",
                      "items": {
                        "type": "string"
                      },
                      "maxItems": 20,
                      "type": "array"
                    }
                  },
                  "required": [
                    "tx_hashes"
                  ],
                  "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": {
                  "properties": {
                    "average_gas_used": {
                      "type": "number"
                    },
                    "total_gas_cost_eth": {
                      "type": "number"
                    },
                    "total_gas_used": {
                      "type": "integer"
                    },
                    "transactions": {
                      "type": "array"
                    }
                  },
                  "required": [
                    "total_gas_used",
                    "transactions"
                  ],
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-26T19:16:09.86Z",
    "quality": {
      "lastCalledAt": "2026-10-26T19:16:09.86Z"
    },
    "resource": "https://api.nexismvp.com/market/gas-audit",
    "serviceName": "Kronos Gas Audit",
    "tags": [
      "crypto",
      "gas",
      "audit",
      "base"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Audit real gas spend across up to 20 Base mainnet transaction hashes you provide — total/average gas used, cost in ETH, per-tx breakdown. POST body required. Experimental/informational only — not financial advice."
}

What the leaf hashes

{"body":"7c383b466402dabf81a56c037f3295756e8aa53408684123f73c1e265daf2a55","id":283991,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793043163604655,"prev":null,"subject":"x402_bazaar:https://api.nexismvp.com/market/gas-audit","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. 0xfc7f37fde6d931f493b9c196a4851f3f29e4774dc39f75d74390abac0abbe1a9
2. 0xdc0f5ede6a77b50af1dbf75410a6c145f3893d93af2f1e8e26bc8ac91628038e
3. 0x70acf44018ce962bebcfeb4b4f3bd0baa8d036f0b1428a2fba0f6746c6062609
4. 0x9489c4aee0348d0ae1372dce8500902df1f36188008ab9a86e57bf593db5887c
5. 0xdbccc54ed1c71806acfe5c252e7fe18f318b77951245a779f04935424070fe74
6. 0xb861e12a2e00de68e961663851b1e775bb9d2101c8756423fb8b66290f82e8aa
7. 0xf85d246b45d880e41b5c02aa2abab2ee364be0491b7132fda197fb4a16d4c60f
8. 0x8db6b774b2dfc8c1179ffa99ffbed3aa8c9d3a16517531c3539e3c34842666ce
9. 0x136ba120fe1689e63adfe97318f101db112c5f8bc417737f0dd8694087327526
10. 0x3a8d3d4169cff276684d88a4f127811b670ead57557bd0903bd3af277772b2c1
11. 0x51bc8fcd224b36d2c60fa49f46f383ee8328191b9e73209ce8018f2612c3d42f
12. 0xf8173f36b7a27e1bb0f6961a49501bba1d99349c5e11449d0d557fbaa910be0a
13. 0xbee644d57738676bfb20eb90d6021f364bf883a8d54f8d17e9dc4749b4074c3d
14. 0x44945ea9ad8b24e723ad5a8fd6d014024a49531783f74ff9229c2ab6930e84c8
15. 0x68d296b1e00b4899fb83c3fba36fffaefa311eac2903067dbebfe776a12b4a9a
16. 0x5fb5dda563336cd1bc1b9f44c52b76237ae72ed2145cb9290f39f304ca7dd678
17. 0x74a0a08e4e7ab9aa5bfbead33dec7e1c7e8e364cff69a63720d764bbe987aadc

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae