Evidence row 72656

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": "2026-10-25T10:32:14.599Z",
    "quality": {
      "l30DaysTotalCalls": 6,
      "l30DaysUniquePayers": 5,
      "lastCalledAt": "2026-10-25T10:32:14.166Z"
    },
    "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":"5895296fd61752a65384498cc8731f82c86891901fa041ad2f345ab5f5390d8b","id":72656,"kind":"listing","method":"baseline/1","observed_us":1793025486334839,"prev":null,"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 2026-10-26 (296695 rows).

1. 0x38e6d5aeb9977fded524654dbb8d6d21ce2000024f47e1dd645e2ba3940a41b0
2. 0x249ea469abb1f9cb4e6f40bf48aaab950252c1d907eeb21ed077c04adf6a78fb
3. 0x913596d352963cf8be4eb73d6ed3832dcdda314c84fe2697e90d926f6f330ff2
4. 0x74e97eeb16857d540a72bbbcacc6e0840238642c76b5bdf668f057b792d29d35
5. 0x772c24a15cb7392af43a8f8d5c18567bef110c7c821c9f55218776115720436e
6. 0x2e2da97ff856ace7ae1691e923a74fd7867de2371f3276666476ab9a0930d9fc
7. 0xb0590cefd37f8d13e56e05d254d2f2c700a7207cce451cbb7aa5f8ce33eb7e43
8. 0x7c323640fc612ea549e65e93eb23c87954b4d31fe70fd0919dd63e0669911499
9. 0x00a148e9e2ad4c6089060a83d132c866dbf880fddd6836d0615294de0a7c2880
10. 0x9f3071ed8f2d0f3fa297d8d2cbe6bc9d92b7f12cd4c3d713d5debd20d9bd5436
11. 0x04a1aa6c1d916326b08791d1568a512f10ac6aaee806ec4073570b0a6b1b64af
12. 0x18cc4431e4bbe45ee72defb9bb3318434364bf71c883055c6197fa7102ec601a
13. 0xe2214b3d6a48396930d1739b02ea366de2aac5337c9b9ff2aff28cecf6518139
14. 0x7f594f5609f388d64d3cda87b5631d393ee8300bb09bad71f150113a5886ee33
15. 0x4b52a97f7a80ff7778a702b85267b8d2e5c93ce160942656435c29ae7be68bf4
16. 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae