Evidence row 72090

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://ca-tax-api-mainnet.lxtap.workers.dev/polygon/allowance"
    ]
  ],
  "name": "Polygon PoS 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 Polygon PoS: 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": "0x357542d88744DB4BFfE8F90008138dDc4a10cdC3",
              "spender": "0x429eba38eF16A42C62b497C22A4662C45b37f848",
              "token": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "allowance": "115792089237316195423570985008687907853269984665640564039457584007913129.639935",
              "chain": "polygon",
              "owner": "0x357542d88744DB4BFfE8F90008138dDc4a10cdC3",
              "ownerBalance": "0",
              "raw": "115792089237316195423570985008687907853269984665640564039457584007913129639935",
              "spendableNow": "0",
              "spender": "0x429eba38eF16A42C62b497C22A4662C45b37f848",
              "symbol": "USDC",
              "token": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
              "unlimited": true
            },
            "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}$",
                      "type": "string"
                    },
                    "token": {
                      "description": "ERC-20 contract on Polygon PoS",
                      "pattern": "^0x[0-9a-fA-F]{40}$",
                      "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": "2026-10-23T09:15:54.002Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-23T09:15:53.794Z"
    },
    "resource": "https://ca-tax-api-mainnet.lxtap.workers.dev/polygon/allowance",
    "serviceName": "Polygon PoS Onchain Data",
    "tags": [
      "polygon",
      "onchain",
      "erc20",
      "token",
      "wallet"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "ERC-20 allowance on Polygon PoS: 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":"ab1f463701c4c1ab0b05cae6e658438dbe906449240877e56f4cc4f78ff53640","id":72090,"kind":"listing","method":"baseline/1","observed_us":1793025485347654,"prev":null,"subject":"x402_bazaar:https://ca-tax-api-mainnet.lxtap.workers.dev/polygon/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. 0xbfcceeab53a04a6fe436a8d309f0d3a3163be1c87d92b470b10bbff4b37c52a3
2. 0x9d2bf9b66f100a6edab23c7120bc093442f1abda9489f2e829efd5f9b7802b25
3. 0x3f105880ea067fc3c714d23aaae630a6f2b2a1bd356098812c51f2aa0872e610
4. 0xf1b7b4c313b0ccb591937e24e6c7a7e2c0a221382bf5ccbb75c4cc6a0b64f8af
5. 0xca72c5ca827b7f7bf4dd2320cf0f1b9a99035c7c1007127f72e1dd92cc14af16
6. 0x48e7a948205194b5ecf9f224e1439a2786d062df2b1f7ff9a275b81cb8ce1ff6
7. 0xa902697842cfc29e1877105d87ec3e2880784e53fdbe49168fa8742f43f06967
8. 0xa400c634e38837a6ff51434c33c8a8ab1bc2ed20aef280a25b20d16394b66882
9. 0xb3160580eccc8e8d67bacf38c4e880e2e476c81637f8d5327a5b0c5ea59c074b
10. 0xb33388c24233bd0f8d79ebb3c3ccad47f73830bca7936d0dea5659e86f4fa250
11. 0x1ee01b339a84463f4b1d9b89cf58bd877e8b7f91bd1aa7bb362bc554f4a1cae7
12. 0xc520305226daa0caf1c2416854f726ec072c950c1903497b2a1e88b0c6f406da
13. 0x96eae331a78c1c9248bc58130ff83d31b884760a51fe7191de2a39105ae7c072
14. 0xdbe2e8dd65ea1248b2936612538f18268abd5cf27ebdab3737694571ad496004
15. 0x9f68b5e15459cb62b8c0cd4c124fa61c74147b4a5755a200fbecd21a581635d1
16. 0x123ec8bee20ddc55223eeef5a4f4d6c4b6416515adbb911c56759f5cde56e452
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae