Evidence row 118556

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://plainchain.appin60.com/v1/gas"
    ]
  ],
  "name": "plainchain.appin60.com/v1/gas",
  "owner_address": "0xb442dacae60c07bb5db8f33c8a6c1572d8f24e83",
  "raw": {
    "accepts": [
      {
        "amount": "1042",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:8453",
        "payTo": "0xB442daCAE60C07bb5dB8f33C8a6c1572d8F24e83",
        "scheme": "exact"
      }
    ],
    "description": "Current gas price on Base, Arbitrum, Ethereum or Optimism, with the USD cost right now of an ETH transfer, ERC-20 transfer, DEX swap and NFT mint. Use before sending a transaction to pick a chain or decide whether to wait.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "chain": "base"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "baseFeeGwei": 0.005,
              "block": 36581662,
              "chain": "Base",
              "chainId": 8453,
              "estimates": {
                "dexSwap": {
                  "eth": 0.00000108,
                  "gas": 180000,
                  "usd": 0.00273
                },
                "erc20Transfer": {
                  "eth": 3.9e-7,
                  "gas": 65000,
                  "usd": 0.000986
                },
                "ethTransfer": {
                  "eth": 1.26e-7,
                  "gas": 21000,
                  "usd": 0.000318
                }
              },
              "ethUsd": 2527.2,
              "gasPriceGwei": 0.006,
              "priorityFeeGwei": 0.001
            },
            "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": "base (default), arbitrum, ethereum or optimism; chain ids 8453, 42161, 1, 10 also work",
                      "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": "2026-10-25T20:38:29.883Z",
    "quality": {
      "l30DaysTotalCalls": 4,
      "l30DaysUniquePayers": 4,
      "lastCalledAt": "2026-10-25T20:38:29.287Z"
    },
    "resource": "https://plainchain.appin60.com/v1/gas",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Current gas price on Base, Arbitrum, Ethereum or Optimism, with the USD cost right now of an ETH transfer, ERC-20 transfer, DEX swap and NFT mint. Use before sending a transaction to pick a chain or decide whether to wait."
}

What the leaf hashes

{"body":"a09e8be3ec84fbecdac13190fda5d00d6257f9d4316f8c119e2a7ca9534b90fe","id":118556,"kind":"listing","method":"baseline/1","observed_us":1793025613426859,"prev":null,"subject":"x402_bazaar:https://plainchain.appin60.com/v1/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. 0xcc940a2db78329bbf54c2a2590498ac4c52b7075641ee4ca8e3c8a1cb15baf3d
2. 0xede3dd7ee542986d5ff683664642535d377177f4dffbfa703c98fbd3c8a1293a
3. 0x2a69c90a7fbe465d0b96bb448e30d31b200a822db5258536c8786b4cadaff138
4. 0x2e594c9f25f470908c1950426057372f983afc3576d1a06f1fbc380dece51b97
5. 0x62c9479ce2948a297a325c05e0163683783745b3990079ffdec093cd79e82967
6. 0xbbbe421ffef50e61cfa4fe58e8a11928c015eca1d0e56a5eef40989a65c517fa
7. 0x9608b66f996a8fcd202aa0a034d47b471fea112166d7cbc6d7dda608f9781308
8. 0x6add0cf7cbdfd44aaf2ace61f10fe3bfab6cf7fa8107ef2c97df1c78b8249f43
9. 0xfc3876014eeb0407e235aa7f84651b18e9179595c390039b7078e713fe61f5a3
10. 0xb437fa812774620037e8b846ce859d02f5f899d75fbb675ae7d40e553edaffd4
11. 0x1233e806ac6f264fea872a85785df4b3024b89e9788bb6dfa89e28944cb30400
12. 0x85ea84dc356483b05e7ec8ed6e303988684070a1512dc756c8e64a7e3604feaf
13. 0x985acd37cc044d5aa6ad959194da8e91c81045df83517891ed92f1763a9ab825
14. 0x5b20d8aab05225a3497eadcce89d2e2a586a510fb31334793d3f46f88f0157c5
15. 0xe94ca5b798e9899ad611e57835af42266e20f53f44977e487d81365e30972beb
16. 0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae