Evidence row 257512

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": {
      "lastCalledAt": "2026-10-26T13:30:03.341Z"
    },
    "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":"1383585191b34897664431733a00dc2d4fe918d416018999bb4e12d40c4cbe0d","id":257512,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793029766346735,"prev":219265,"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. 0x1307d42eddb0ccc68491daf14b899c07fc15ed9f6e2589c6a5ec65da6009d1de
2. 0x01db0a9f7ef8ebb32b2bf342fea9e22f75d7c5fd7d3a999716c30515ffde019f
3. 0x9f1fda99a1bd29f205c3ecc78ea1bc9b3f604b22125c72a47ad601461bd53761
4. 0xa200e56cb51fe39df141495c36bed7e5d4f8160a87db1e58a39c01cf0c322f59
5. 0xc42c338835d502a4728bf546d28a9461fe020b548fa92372160106cc3ae9dfc9
6. 0x7b2a05e871232f67b59b85e5a4fb508f79e1ea00f2015fd33aaeec518e987f0b
7. 0x2e3ec0d47377ff765b03d936aa2fb6f754843434341d8f3ea5fdbd66b7fdb588
8. 0x6c0e5db4ca2e7732e3d3d202dadcd2ba78f14537d7782581b56b7ffb3d236f98
9. 0xbf2856fb609a9a271a639d796f55f6a35567f475741e7f8ea37be87665d74132
10. 0x82c27b8a0cc799b1b8e2ae127f363936ba1a6e1a5d43001849ff8f1e205dc950
11. 0x9d19085bdd0cb9322cb235f88ed9fb666f1b60fe7afec1170ec05f633673830a
12. 0x7e390200ea1ea25db5884cf05fa50ad599f0759b573f081e361cc22f7206133c
13. 0xff1c28bdf595a3d1333e9915edc68e9c5fded7bd5923fa85870979af34cbc3b3
14. 0xb49e8c2564256e5322e375cb619d9ac70fd17c1d1eba9c991bba4cb6428f45cc
15. 0x60582ab4b41e72eb70eb0bce07fbf0fb4d2b62a8bad5be50f5d16d511adc746c
16. 0xc6a4d7899a0f442958e26505011190b7cff2483611c1b94eba9043e0ba9ac36e
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae