Evidence row 125071

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://x402-echo-service.onrender.com/chain/gas"
    ]
  ],
  "name": "Gas Price",
  "owner_address": "0x9cc774a8ed49d89cba1a288f4a050b8f7fba77ee",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x9Cc774A8eD49d89cBA1A288F4a050B8F7FbA77EE",
        "scheme": "exact"
      }
    ],
    "description": "Current gas conditions on Base. POST {} and receive the legacy gas price and the EIP-1559 base fee of the latest block, in wei and gwei. Useful for agents deciding whether to transact now or wait.",
    "extensions": {
      "bazaar": {
        "category": "Infra",
        "coverImage": "https://x402-echo-service.onrender.com/icon.png",
        "info": {
          "input": {
            "body": {},
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "baseFeeGwei": "0.004",
              "baseFeeWei": "4000000",
              "blockNumber": 50656854,
              "gasPriceGwei": "0.005",
              "gasPriceWei": "5000000"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "properties": {},
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json"
                  ]
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http"
                }
              },
              "required": [
                "type",
                "bodyType",
                "body",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "baseFeeGwei": {
                      "type": "string"
                    },
                    "baseFeeWei": {
                      "type": "string"
                    },
                    "blockNumber": {
                      "type": "integer"
                    },
                    "gasPriceGwei": {
                      "type": "string"
                    },
                    "gasPriceWei": {
                      "type": "string"
                    }
                  },
                  "required": [
                    "gasPriceWei",
                    "gasPriceGwei"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "json"
                }
              },
              "required": [
                "type",
                "example"
              ],
              "type": "object"
            }
          },
          "required": [
            "input",
            "output"
          ],
          "type": "object"
        },
        "serviceName": "Gas Price",
        "summary": "Current Base gas price and EIP-1559 base fee.",
        "tags": [
          "gas",
          "fees",
          "base",
          "eip1559",
          "onchain"
        ]
      }
    },
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1787754105/bazaar-icons/222b7a4262b684da.png",
    "lastUpdated": "2026-10-21T06:56:28.275Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-10-21T06:56:28.137Z"
    },
    "resource": "https://x402-echo-service.onrender.com/chain/gas",
    "serviceName": "Gas Price",
    "tags": [
      "gas",
      "fees",
      "base",
      "eip1559",
      "onchain"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Current gas conditions on Base. POST {} and receive the legacy gas price and the EIP-1559 base fee of the latest block, in wei and gwei. Useful for agents deciding whether to transact now or wait."
}

What the leaf hashes

{"body":"ae3073a4731b4a9c36f6b9953034157f2646edfde4a399cf9f3b5b0517e3d4c3","id":125071,"kind":"listing","method":"baseline/1","observed_us":1793025625766552,"prev":null,"subject":"x402_bazaar:https://x402-echo-service.onrender.com/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. 0x3170c947de82e2ed18bc4390263ba1f914ffffc1fa2f136c4ac12dae936eddd4
2. 0x3364a046020935cd2f373b7b0f28584fa0755ded7f5c3dc92b905e8dd4d506a6
3. 0x342bf87d264f08a0cd40e067f4e630cd917842e4f9412738a35685750d33501d
4. 0x4eda928a95ce6d0ed796e70a010a62c126803faac4043108a7a6c44386fd2c1f
5. 0xd0d0b604a3dadcf1651b28376bfc00e526c012b8f6a93f74457013170e7afbb6
6. 0x1928fdde9fd1faed23740f328ec29578e2c46be080dcbfcbbfedfa52ad28198b
7. 0x67ab638d4f12af70861a24829957c9a33979c605e2f75dffded238538757553c
8. 0x5e7c671c9752f2f53258351c052e245a34e091e54966eec715092a812b38f5e8
9. 0x402b44023e3d2ff0b800049d2a8bc387b4025702901a296c70ab95ef050dfb09
10. 0x057c932588a31dcb53ff6fe6c091dc26556fcd6faea2eb4cdb4ac1d3f596f1e3
11. 0xa4cc17a7ce78f05039820f0a50d323cd0bedd23c37338f2719d249dca75c07ec
12. 0xd85c7204d76d26255c94ef4caa12c05addd08238caa5cdc3888ea60b74e6b940
13. 0x36a44931b230976c04691d90bf3a25ed4111d74c78b672850d8025a911ca88dd
14. 0x683955a5b2250ad50568d022a6580d8739b6aff1356779d72a773b088e7c289c
15. 0x610738e0c43687aded83c613c73de8b5226c73c375858a167436461c522ea213
16. 0x06d71bfa7d8b41d62c8836efc2c601e1cc3772d9453596b2ae4950887f3310ca
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae