Evidence row 1262306

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://contractlens-api.appin60.com/gas"
    ]
  ],
  "name": "contractlens-api.appin60.com/gas",
  "owner_address": "0xb442dacae60c07bb5db8f33c8a6c1572d8f24e83",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xB442daCAE60C07bb5dB8f33C8a6c1572d8F24e83",
        "scheme": "exact"
      },
      {
        "amount": "1000",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:42161",
        "payTo": "0xB442daCAE60C07bb5dB8f33C8a6c1572d8F24e83",
        "scheme": "exact"
      }
    ],
    "description": "Live EIP-1559 gas on Ethereum, Base, Arbitrum, Optimism, Polygon or BNB: base fee, slow/standard/fast priority tiers from the last 20 blocks, ready-to-use maxFeePerGas values, and estimated cost of an ETH transfer, ERC-20 transfer, approve and Uniswap swap.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "chainId": "8453"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "baseFeeGwei": 0.005,
              "chain": "Base",
              "estimatedCostNativeAtStandard": {
                "ethTransfer": 1.3e-7,
                "uniswapSwap": 0.0000011
              },
              "ok": true,
              "tiers": {
                "standard": {
                  "maxFeePerGasGwei": 0.011,
                  "maxPriorityFeePerGasGwei": 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": {
                    "chainId": {
                      "description": "EVM chain id: 1 Ethereum, 8453 Base, 42161 Arbitrum, 10 Optimism, 137 Polygon, 56 BNB",
                      "type": "string"
                    }
                  },
                  "required": [
                    "chainId"
                  ],
                  "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": "2026-10-29T18:20:41.99Z",
    "quality": {
      "l30DaysTotalCalls": 8,
      "l30DaysUniquePayers": 6,
      "lastCalledAt": "2026-10-29T18:20:41.34Z"
    },
    "resource": "https://contractlens-api.appin60.com/gas",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Live EIP-1559 gas on Ethereum, Base, Arbitrum, Optimism, Polygon or BNB: base fee, slow/standard/fast priority tiers from the last 20 blocks, ready-to-use maxFeePerGas values, and estimated cost of an ETH transfer, ERC-20 transfer, approve and Uniswap swap."
}

What the leaf hashes

{"body":"a73eab690314703800fc00f8b7be33d05b5db2758657d188cff308982fd80059","id":1262306,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793385521719000,"prev":526993,"subject":"x402_bazaar:https://contractlens-api.appin60.com/gas","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-30 (243099 rows).

1. 0x638f3717be55401645ff609a62914f0f68432591aa7ad7935a45b77a89ea127f
2. 0x3cfe656afbf72c84b04b94527c227a663f77ec8f46b8c206b50f302787b3b97b
3. 0x5797370ad2317a34f2f56070c52ad49e86f098cf6b8cbd3fd1e56846f808d967
4. 0x10b2b95763ed8352cd990d8cd994549d3c11ca93ec430b75deb3c22d6eba02c7
5. 0xe4957ab09460779b2f73c852acca556cb6db79c9c6920830759cc35578d28ef8
6. 0x18d00d5b96dde1cbc252b4a0e6c5672850ca59537dce49b8fb95bb8d3195b71d
7. 0xb3ed5899b68833040ff571e9ce82de658524db433bc9b45ec3fef2abdb99d23e
8. 0x55b9941bbbf98a1ac12b1c455cc573bef4854fd8e5099f7fef931e59fc7e898e
9. 0x4beb5235c43506cf99962accf3502cab307d079fd00130bcbb2506864d6b9094
10. 0xee18a20d08a35f6d12c270d29ba0c175854703808d2bfd3b34b0107c40e9c012
11. 0xb083831c69778dc18fa11ecffbb577249d24650eab65170f9bc375d54eeda29a
12. 0x3af23ab148f0bbaee09307fb949963ba200b63c08464f0ff3807500afab9898f
13. 0x71866e46af973a0dfdc12482585dfcdbcf016f95832fc06f75f5454e82088a3e
14. 0x863694f188c4b3bb5062c468823f130a2c1762c9b6bf2ce9a68fd27f465427d0
15. 0x7ecc532de10b728de98de2eb2a81fbd8da2254ff32b38b6ffde14af9964fc470
16. 0x910a91495535ac1a9e959d27d607e185616d2d41b45bc7071c6357f426f372d8
17. 0xffe660edb9e5c6e3449a49454634c3e7b2f9fe703e5697f723b021735647ab7e
18. 0x30a81d8fcef4e8f9e2877c62796cfc5612fc1b251127d531dee28f8dbd5c5147

Day root

0x0826c7ad6039e06a2360ca0a4a3a4fe7f2626c6dc19f71a37599386f78b39875

Chained

0x36b4c8a1063758f0b8765fa1bdf75fa92fb543cc183add3e261880ee2bd1f822

Published

On Arc Testnet, block 69923247: 0x8704744146c6967c8abc9e9a99de4db7283b29e840922ea83a69b6fe776e6861