Evidence row 452053

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": "2026-10-27T10:05:13.619Z",
    "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":"92e26e05c051a88b615bb772d253c361b8f6230221415fb842df61dc6fcfdea5","id":452053,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793100517055986,"prev":72656,"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 2026-10-27 (273461 rows).

1. 0x5d177bd81a7913644fe75851a4edd97a61eca70cbe8c6130a7efdb7bf4b73200
2. 0x4b893425b1d6353724dba8a59b0e6e407bf96f4f6349209495a1a1541e858731
3. 0x43597e464e861de82f6fbef3340b2a7c27e2f8db5685e433e10b8a5b3b25b9af
4. 0x73b5a60995fe7a856a0ab1652d71594b38ec3a034cdab004945852260f237f6e
5. 0xcd91de5943a69875c23c22b1dac489df1d2d3f8f6a851c470868fe27bbf3ccf8
6. 0x5fb06512ab72d97a8f5da7aa9c4c5ee9016ea3ff375b5fdbbf3afeb803d40a07
7. 0xf803b27b4261c01eed7600902e1379efd8f8b63e920cc7c23e241ea0d7dda3d3
8. 0x6b79a42b692a5fe615873373c84f3825344c7132a3e4951cf06afb2841bf3006
9. 0x748b73e53ac4b81808f7eb6fb897713d40278caa15d3ceda5bae3e2c5565fa6a
10. 0x3d22d634571ba72c183e235f8080fb451105de49426266f015f163e6a5c09b1b
11. 0x2852744b47bc9835dedf6e89aec877e57a0e0ed97b36700cae3173aefff12cb5
12. 0x548136c1e3ccb412bb6e8b0e92df8bd9db651531331fa2a46332b9c2956172f5
13. 0xeaf6b21867367f85a965f982b6593c42eafe4fdf74e94b675523a6478de49a54
14. 0x4277e02be0b5d91d78bc2247e37d402572474ba896c2e8f45765c8dc4e244d36
15. 0x6f00f0da417f4126951ba8ba9b7962c847e91f5c61364ad9ad47e5f979698a60
16. 0x23cf9bb4337ee8be7fcae368fd69d24c62c11fb45882127b4cd919bb96a19996
17. 0x0e01aa9525097570a6edaf32bfc959de57bf5c24317cf10c0716affea85ca60d
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4