Evidence row 72038

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://ca-tax-api-mainnet.lxtap.workers.dev/arbitrum/allowance"
    ]
  ],
  "name": "Arbitrum One Onchain Data",
  "owner_address": "0x2ecb9e1fcca7a62758c679f11bc3241466d181d8",
  "raw": {
    "accepts": [
      {
        "amount": "5000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x2ECB9E1fcca7A62758c679F11bC3241466d181d8",
        "scheme": "exact"
      }
    ],
    "description": "ERC-20 allowance on Arbitrum One: how much a spender may transfer from an owner, whether the approval is effectively unlimited, the owner's balance, and the amount the spender could move right now.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "owner": "0xFD03AbCAdaF3F930fA4E37Eb2f6ea3A44a41b7F0",
              "spender": "0xe35e9842fceaCA96570B734083f4a58e8F7C5f2A",
              "token": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "allowance": "0.000006",
              "chain": "arbitrum",
              "owner": "0xFD03AbCAdaF3F930fA4E37Eb2f6ea3A44a41b7F0",
              "ownerBalance": "83629.179457",
              "raw": "6",
              "spendableNow": "0.000006",
              "spender": "0xe35e9842fceaCA96570B734083f4a58e8F7C5f2A",
              "symbol": "USDC",
              "token": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
              "unlimited": false
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "additionalProperties": false,
                  "properties": {
                    "owner": {
                      "description": "Address that granted the approval",
                      "pattern": "^0x[0-9a-fA-F]{40}$",
                      "type": "string"
                    },
                    "spender": {
                      "description": "Address allowed to spend",
                      "pattern": "^0x[0-9a-fA-F]{40}$",
                      "type": "string"
                    },
                    "token": {
                      "description": "ERC-20 contract on Arbitrum One",
                      "pattern": "^0x[0-9a-fA-F]{40}$",
                      "type": "string"
                    }
                  },
                  "required": [
                    "token",
                    "owner",
                    "spender"
                  ],
                  "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": "2026-10-23T08:16:00.406Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-10-23T08:16:00.216Z"
    },
    "resource": "https://ca-tax-api-mainnet.lxtap.workers.dev/arbitrum/allowance",
    "serviceName": "Arbitrum One Onchain Data",
    "tags": [
      "arbitrum",
      "onchain",
      "erc20",
      "token",
      "wallet"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "ERC-20 allowance on Arbitrum One: how much a spender may transfer from an owner, whether the approval is effectively unlimited, the owner's balance, and the amount the spender could move right now."
}

What the leaf hashes

{"body":"8f6fc2f36f402475031ecc3a389e5e29faae6890ee92eee81e39a7084fde2e29","id":72038,"kind":"listing","method":"baseline/1","observed_us":1793025485151073,"prev":null,"subject":"x402_bazaar:https://ca-tax-api-mainnet.lxtap.workers.dev/arbitrum/allowance","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. 0xbafdaf220f011ce9fd5c244cc0b2966d980c52c7cedacea927d00a212869cf12
2. 0x59c295b2b39c6264912b3e26d32535416dde757e0275209368d47311f7f53a6f
3. 0xcae9822971bbb9e6b720e79c650ce3bd0d5c057846c93db18c4e78e832feab25
4. 0x64769a586f394099ae3317619fa6342b530a15a5657316ea4323ca832208f3e5
5. 0xa42eb83b51eb4e239de9476a0cc7e62b50c451342133011cb35a827320f8ea71
6. 0x34680221bbdfda5fb5e8f436039f421e57eb8378751eb1a33335d572b26eabb7
7. 0x032d11d083043ffa4fc696550c7bf2cb4c55d0ca08cc2c3e06bd7c185e983c4f
8. 0x7a05a5b941f84c66a41f3bd5bfc3976df86a6b45b98284f5416f7e9f6d0def64
9. 0x42cfc3c8c09b7358a6a49095939ffde190861a413dd1fa70599c6e2780917328
10. 0xba039529ba5cb4cbbafb853c51d267fdca61f54a12f026c4673ae70061b8c199
11. 0xd2fc7e774aa4a9259d0eb5e076abdaa36417d3853be0f8ff34d37acaa77db477
12. 0x1a61f9ab4a9304db8146c466be341271a345718ebf06b718e0f0dd9f347d2fbd
13. 0x2f43fe2b2533a5f40c107c114e458e226102f5f8ae91f097e964345880e30928
14. 0xf692ce2b0a640ec9f75aa960e5fb1c2c7091a04e24881798735752c19014e519
15. 0x9f68b5e15459cb62b8c0cd4c124fa61c74147b4a5755a200fbecd21a581635d1
16. 0x123ec8bee20ddc55223eeef5a4f4d6c4b6416515adbb911c56759f5cde56e452
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae