Evidence row 72079

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://ca-tax-api-mainnet.lxtap.workers.dev/optimism/allowance"
    ]
  ],
  "name": "OP Mainnet 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 OP Mainnet: 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": "0x9B1e7350517c2C94a990e55aC6c20De37675c703",
              "spender": "0xFb4e4811C7A811E098A556bD79B64c20b479E431",
              "token": "0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "allowance": "60",
              "chain": "optimism",
              "owner": "0x9B1e7350517c2C94a990e55aC6c20De37675c703",
              "ownerBalance": "66.148476",
              "raw": "60000000",
              "spendableNow": "60",
              "spender": "0xFb4e4811C7A811E098A556bD79B64c20b479E431",
              "symbol": "USDC",
              "token": "0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85",
              "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}$",
                      "type": "string"
                    },
                    "token": {
                      "description": "ERC-20 contract on OP Mainnet",
                      "pattern": "^0x[0-9a-fA-F]{40}$",
                      "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": "2026-10-23T09:01:10.133Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-23T09:01:09.984Z"
    },
    "resource": "https://ca-tax-api-mainnet.lxtap.workers.dev/optimism/allowance",
    "serviceName": "OP Mainnet Onchain Data",
    "tags": [
      "optimism",
      "onchain",
      "erc20",
      "token",
      "wallet"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "ERC-20 allowance on OP Mainnet: 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":"a4b9b7d5541c80b1e6e25c48f911817aae05827da691a33e2281e6f290915aa0","id":72079,"kind":"listing","method":"baseline/1","observed_us":1793025485322957,"prev":null,"subject":"x402_bazaar:https://ca-tax-api-mainnet.lxtap.workers.dev/optimism/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. 0xd3ca200b4cef1c91bb777d07d39c0089ce1865b0feaa70d04cff85fe1fa24b66
2. 0x32b1c81c0d4d65774a108ce62b0bdb3507f9b00241e088da37575221dce33654
3. 0xd0bdcccab69cc5df3a08a110de7d2f798c7899f2e00a8e65a39339c66f0c1162
4. 0x4557f36a5c8195685de621cefba545d7c30ec7d160335127585e76d1438e8938
5. 0xbcb5807dc63dc27e1d3c99ea21bfd8dbfde83bc74ebdfbd14721457053974462
6. 0x028c4df1ede5754536abdd23c57acbf70cd3bd9351813825c4b18a85121d094b
7. 0x8e7d2bb433d828da3622a995a2fb3ad883061e81e0df74cc6e201fceafa7688f
8. 0x0fe785dc474ba70a5b17793f7558f6af94d75434796800cbc14898dccc70cc35
9. 0xcfadec68a3a4dd26717dd245422f2e890d938c48812f34ffce5806e8aac21850
10. 0xa2e80671dd591188e2f9ffca4feadda9599a056a371af323021b390343be0982
11. 0x14362d8e1df4e5c0cf9c6949986f8f51c6a0b5605b593e145aade16c5f5c871a
12. 0x9f6b360f1992898cb3f17e45d0bf5a96f946d7eaf9705a57af03c151a407d239
13. 0x889eefefef2d4457fe6114f397df813a5cbb85011a6f40309b54ddcd4aba3bd1
14. 0xefabf1105e09cf52c12c58e60cbb5048b9ac3f02631d1816a926e14bdd86fbdf
15. 0xe94ca5b798e9899ad611e57835af42266e20f53f44977e487d81365e30972beb
16. 0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae