Evidence row 526993

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": 7,
      "l30DaysUniquePayers": 6,
      "lastCalledAt": "2026-10-27T10:05:13.372Z"
    },
    "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":"db1f8022c2ee234ed2b421cebe76c228d1242d0d8df3d69276652762edaa7f2d","id":526993,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793124793438696,"prev":452053,"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. 0x0faa58bbd401e27855bceea1a27953567a4b5280c5a8cd3584e1f3070cd7f0d3
2. 0xfca31f80c66c68704fe9354a19c09f07a623b5a8460852e98ed1c5e3b34f886f
3. 0x5afbcf7d4f03b68df39b01020f4770332ba4387f38aad566ab4761dd08738339
4. 0xdf8a00268aeb3f979eb4d1742c299127ccdd1284b1feee3b120a5425e4357e9a
5. 0x4945f02cbe5ed31234a467aca16f4cb63bfa98ed53e5e9131450d7c585199493
6. 0x62dc77f2f5cda02899c0200d116e82bf6d643a8936fd4dc85442fcafc1502160
7. 0x187b55cd3d882d123788a9314448c9f8ad8ad62ec82b7e5417a809a7f6bbfd69
8. 0x31d4c97642e080e141e3869e433e973567cf48dbb85a5d76df167d83e460b835
9. 0xa2fc4bffc417a5fb91e2730e0b1ef614a9a9e303eb2aa88303f3cb67847e0a57
10. 0x881c655bfa9ead003aa2814cbe7266bcbe27d192dbf9beca8cd2e542c42640ce
11. 0x8ac2fe99f9dd601ab64a254bbaed16deea227866f6b921e1bd7aaefef2e05b53
12. 0x0d3ea2b5e8eb21cf4cb25a0567ff70340d50d07631267f35ddfc7cd1de74eea5
13. 0xedf6ab3c3733ce137d888d3e5f7006ba77ab04b8f1fe576519f7b056959665ee
14. 0x52c5141da0cbee106a30396ee7d1360fd22f55084aca2ca436c8007892775670
15. 0x6913cb48392acb8dc5c940dcdb6e6fc889d544f85dff11da249551a5f027e688
16. 0x518b93854db03dc9fc938883abf30da6eaae5ae0d4336903968fd32a7df8c71b
17. 0x22c1fb9487ee0b9732fa017a0cc321eb27a60c08450d112f755089796e12cb1c
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4