Evidence row 82227

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://bot-bazaar.fly.dev/v1/x402/gas-fee-estimator"
    ]
  ],
  "name": "Bot Bazaar",
  "owner_address": "0x847f54ae8ddfd71ed7bc930c1f7a73576fab03a9",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x847f54ae8dDFD71ed7bC930C1f7a73576FAb03A9",
        "scheme": "exact"
      }
    ],
    "description": "Estimate Base L2 gas costs in ETH and USD for common token operations vs zero-gas facilitator-settled x402 EIP-3009 transfers.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "operation": "eip3009_facilitator"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "base_fee_gwei": "0.005",
              "gas_units": 0,
              "generated_at": 1792950000,
              "note": "With x402 EIP-3009 facilitator settlement, the facilitator pays Base L2 gas so the buyer pays 0 ETH gas.",
              "operation": "eip3009_facilitator",
              "payer_gas_eth": "0.000",
              "payer_gas_usd": "0.000000",
              "tool": "gas-fee-estimator"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET",
                    "HEAD",
                    "DELETE"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "operation": {
                      "description": "Operation type (eip3009_facilitator, erc20_transfer, eip3009_direct, uniswap_swap)",
                      "type": "string"
                    }
                  },
                  "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": "2026-10-26T00:58:52.502Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-26T00:58:52.273Z"
    },
    "resource": "https://bot-bazaar.fly.dev/v1/x402/gas-fee-estimator",
    "serviceName": "Bot Bazaar",
    "tags": [
      "x402",
      "reputation",
      "sellers",
      "base",
      "usdc"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Estimate Base L2 gas costs in ETH and USD for common token operations vs zero-gas facilitator-settled x402 EIP-3009 transfers."
}

What the leaf hashes

{"body":"71df0defedd4ca2fb8b14ee291d174ade759a09fad06a7d7cd647806f6608355","id":82227,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793025501602262,"prev":71822,"subject":"x402_bazaar:https://bot-bazaar.fly.dev/v1/x402/gas-fee-estimator","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. 0xb24506519d183d2b5d0a5e50a8edc57bdb01772c4dda8c2f0afc521e6a0da1f6
2. 0x60c9b49443132c6aad4f1e0dd81595e6360f13da926b4ff5217789894c62d982
3. 0x74032056ca434d4753e98a6dba942f58035262b88ad60c67e3a0622c97aaee8b
4. 0x4d4bcb11e9a5952252305802872d73c030defa972b44df17cfee0eb6a337a4b5
5. 0x507d38c324b63f0b9b9b49b26a8e80b1a2589a1b74103daf13eac91d87529477
6. 0x0b358bdd8ce8093573d4801285178f03e92850c4d951f160963fcb0ab32ef5f0
7. 0x0e7eb2db95d67af812b673c8193b33920a57082f1b8c02e54075f3a93cb9c3ad
8. 0x85bb0ebb5c40866a18401a7dc794162475af5c870448a640722421139c954ef8
9. 0xbb48c7f54a52441a7938687b3d49edf7056fa8a3386661ae7eca7e2c48ad9b20
10. 0xd373f611cc8d60491990c0729396ae5185b763a50d0fff3be7937919e843df36
11. 0xb673e7e79847b2398685ec91a7c3b2395fccef249a8f8983b5eecc97a794a3ec
12. 0xce1aeb889b974291cea1fbfd01595655bd2c1b3636dc5b56eeb8904adb9f6c65
13. 0x3b1c0e225d1b1cb24cd5d5ea4af2de20ed68a1eaf8b61924ed1b81e4b9cf7e39
14. 0x083427e39db4dd470662401f6db5db8fadf084fc4274cf8621b368416952b78b
15. 0x1a74ed3b3756b9cd946da49701bcec120ec88645013da99fa9eea60b39e1a570
16. 0x123ec8bee20ddc55223eeef5a4f4d6c4b6416515adbb911c56759f5cde56e452
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae