Evidence row 279092

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://agents.crowdspark.me/v1/chain/gas"
    ]
  ],
  "name": "Agent Tools",
  "owner_address": "0x0dea0030a17bf886543a757c55924710258c2eec",
  "raw": {
    "accepts": [
      {
        "amount": "2000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x0dEA0030A17BF886543a757c55924710258c2eec",
        "scheme": "exact"
      }
    ],
    "description": "Gas estimate and fee quote for Base, Ethereum, Optimism, Arbitrum and Polygon: eth_estimateGas for your transaction (to, from, value, data) or a plain transfer if no 'to', current base fee, slow/standard/fast priority tips from recent blocks, max fee suggestions, L1 data fee on OP-stack chains and total cost in native coin and USD (Chainlink price). Reports reverts instead of failing. Use before signing or to budget agent transactions.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "chain": "base",
              "data": "0x70a082310000000000000000000000000dea0030a17bf886543a757c55924710258c2eec",
              "from": "0x0dEA0030A17BF886543a757c55924710258c2eec",
              "to": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "base_fee_gwei": "0.005",
              "block": 53115830,
              "chain": "base",
              "chain_id": 8453,
              "fees": [
                {
                  "est_cost_native": "0.000000232928187839",
                  "est_cost_usd": 0.000541,
                  "max_fee_per_gas_gwei": "0.01011",
                  "max_priority_fee_gwei": "0.00011",
                  "tier": "slow"
                },
                {
                  "est_cost_usd": 0.00065,
                  "tier": "standard"
                },
                {
                  "est_cost_usd": 0.00211,
                  "tier": "fast"
                }
              ],
              "gas_units": "45415",
              "l1_data_fee_native": "0.000000000857537839",
              "method": "eth_estimateGas",
              "native": "ETH",
              "native_usd": 2320.97,
              "reverted": false
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "chain": {
                      "description": "Chain, default base",
                      "enum": [
                        "base",
                        "ethereum",
                        "optimism",
                        "arbitrum",
                        "polygon"
                      ],
                      "type": "string"
                    },
                    "data": {
                      "description": "Optional. 0x calldata",
                      "type": "string"
                    },
                    "from": {
                      "description": "Optional. Sender address",
                      "type": "string"
                    },
                    "to": {
                      "description": "Optional. Target address; omit for a plain native transfer quote",
                      "type": "string"
                    },
                    "value": {
                      "description": "Optional. Value in wei",
                      "type": "string"
                    }
                  },
                  "required": [],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-26T15:42:24.993Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-26T15:42:24.895Z"
    },
    "resource": "https://agents.crowdspark.me/v1/chain/gas",
    "serviceName": "Agent Tools",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Gas estimate and fee quote for Base, Ethereum, Optimism, Arbitrum and Polygon: eth_estimateGas for your transaction (to, from, value, data) or a plain transfer if no 'to', current base fee, slow/standard/fast priority tips from recent blocks, max fee suggestions, L1 data fee on OP-stack chains and total cost in native coin and USD (Chainlink price). Reports reverts instead of failing. Use before signing or to budget agent transactions."
}

What the leaf hashes

{"body":"70690085a0837b168bebe35ca166946ff23a6c78906936bc28c24a5a9f550738","id":279092,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793042173236883,"prev":262341,"subject":"x402_bazaar:https://agents.crowdspark.me/v1/chain/gas","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. 0xf427d2eb53f16a2db0b67c6fc7d004135fffcd0b12f7fe304ce8d8da5a323b31
2. 0x101b2d46b556b437227f8d4787eebc9eef4f1c186b2fea67462e65e6d0c76fa8
3. 0xb7447576871b3f4319deec0b6ff750756c4fee10986d2147feb6e4a244a6c398
4. 0xeb9180e0e18c76e9a63daad6d34cd783b7bc907831fe8c31bfcd18940d539d85
5. 0xde54a18b0cbce109908a4e746c77c093b92bc34cb96dc58203750ead1254364c
6. 0x62088acffb7428a757d2d0a5a5ac25de0122c851526475e9727a00aa3c3e2642
7. 0x4e17f184af83d4cd0325e9d244aed8e12487345713eb3af774ef1cf8e4bf3b95
8. 0x7446c30f8f85012d898dba794bd17bdbf35b492377011df03a56fd87ae172a44
9. 0xbb4718fd976bfd59f0712e3e7e76688ff4f4ecf8fe3b35be5a4d32ac65bf8af7
10. 0x2975e89c0c18a450c0bfde2c42c4c92b23bf147f75afffe0dee4f9c66939c8bf
11. 0x07709318feb0c1102a4f704a544c82a5c58ec388fbdac0965060c1f5091cc976
12. 0x86ae35463d854f3938d986999aa8497e14f0ba2aa6f39a269e1e6d1134f9b847
13. 0x79695e4356ea25a2b58265a824698704cd2c743099ce2dca9e41384ce8f1a8c5
14. 0xd769d41500075835c3b2f9184d223699fb983fd05c29fbcb44d964abc7ee380d
15. 0x68d296b1e00b4899fb83c3fba36fffaefa311eac2903067dbebfe776a12b4a9a
16. 0x5fb5dda563336cd1bc1b9f44c52b76237ae72ed2145cb9290f39f304ca7dd678
17. 0x74a0a08e4e7ab9aa5bfbead33dec7e1c7e8e364cff69a63720d764bbe987aadc

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae