Evidence row 1508012

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://x402-agent-hub.x402-agent-hub.workers.dev/v1/chain/token-balance"
    ]
  ],
  "name": "x402 Agent Hub",
  "owner_address": "0x1721e9841257a34dbdba407d4dba3a727a02d072",
  "raw": {
    "accepts": [
      {
        "amount": "2000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x1721E9841257A34DbDBA407D4DBA3a727a02d072",
        "scheme": "exact"
      }
    ],
    "description": "ERC-20 token balance of any address on 7 EVM chains, returned raw and decimal-formatted with the token symbol, so agents never mis-scale USDC (6) vs 18-decimal tokens. You only pay for successful reads: invalid input, not-found and upstream errors cancel settlement.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "address": "0x1721E9841257A34DbDBA407D4DBA3a727a02d072",
              "chain": "base",
              "token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "address": "0x1721E9841257A34DbDBA407D4DBA3a727a02d072",
              "balance": {
                "decimals": 6,
                "formatted": "4.25",
                "raw": "4250000",
                "symbol": "USDC"
              },
              "blockNumber": 38211554,
              "chain": "base",
              "chainId": 8453,
              "token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "address": {
                      "description": "0x-prefixed wallet or contract address.",
                      "type": "string"
                    },
                    "chain": {
                      "description": "base (default), ethereum, arbitrum, optimism, polygon, bsc or avalanche. Chain IDs also accepted.",
                      "type": "string"
                    },
                    "token": {
                      "description": "0x-prefixed ERC-20 token contract address.",
                      "type": "string"
                    }
                  },
                  "required": [
                    "address",
                    "token"
                  ],
                  "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": "2026-10-31T09:05:39.495Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-31T09:05:39.374Z"
    },
    "resource": "https://x402-agent-hub.x402-agent-hub.workers.dev/v1/chain/token-balance",
    "serviceName": "x402 Agent Hub",
    "tags": [
      "onchain",
      "erc20",
      "balance",
      "usdc",
      "evm"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "ERC-20 token balance of any address on 7 EVM chains, returned raw and decimal-formatted with the token symbol, so agents never mis-scale USDC (6) vs 18-decimal tokens. You only pay for successful reads: invalid input, not-found and upstream errors cancel settlement."
}

What the leaf hashes

{"body":"2ea808b47475382405bcf5ed796c82812289ba987b03b3bce70727fca3930351","id":1508012,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793472706512772,"prev":null,"subject":"x402_bazaar:https://x402-agent-hub.x402-agent-hub.workers.dev/v1/chain/token-balance","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-31 (246033 rows).

1. 0xb1f9566f59f23bcfc1909e35e93af0d67d4b02c4c9af48e50f0e4c17ec69df85
2. 0xdb15d5efb7c9b0500bfa123ab3b34764a5f8166f15aa4a691f436c98c1ac5a71
3. 0x89e850ea038c62d213ee6d5af84dacfe9b572913c42f160573621d1a7c9408e6
4. 0x8f9a197f72066df5260f470a0d318ce247ca0ff25481bae7c35cea0d2ee278a7
5. 0x7ec57fe3689af93742efd93e05814f1f186dc911e16a0da485cc4bdfefd93924
6. 0xbcab9454f237df629663b7f048332ab41e4f54fa18c3d9f0f53c9445461a37b3
7. 0x1ba27afc1f0e05f5296a09601b453e6909c8a0b37c582b73730528f757e6ffbb
8. 0x361d8b82c1e051c53e8e3155a91313b203d96a025613851fde706441fa59ea7e
9. 0x478f1eb1322b507d9d67402f760ee6bd8479dedd2504c4e5d51ea9d7abe02f11
10. 0xb83504c2730a254415046458b23d5bf7c18afaab49efae2539bf3ad099e45a68
11. 0xb421643248e969ab16ce2cb38ab6db27900352ba1939d1e6ebdc09203eb7620e
12. 0x39efe32fa809f8d2b1396339e33d2ba1be4516cd5d8024633b0de45fcd3a7422
13. 0xb09440bf6646ff777d33f0f00bc9aa431a06af5faf5954642c917acff5aa3d78
14. 0x17b4d08af91ab833713ac6154ec68f498dbe032401780285c2ccdadad6ac27f1
15. 0x57afe240b626bf60f6af8c76404811e95ea5519f217fac382bd159177a8ec870
16. 0x2e1cd25ce4079da9bfa6219d7ffec992149add4cd7d5c5b2cfee9908c1c8a5dd
17. 0x50003b3c3045b653f8be4232e95e80582cf5c54c14c509ba0a9a197b9e5005cb
18. 0x0504a25438f3c7932125463198ca74c5064f23f71a5c92763b3fc96a98cc8b57

Day root

0x24463725d1c0d9894bd6123691d532547aaa79f0762c0e45aa6a68acf1fd71ab

Chained

0x7d4824ff313dee7252a46f9d5c37b452851deb6c9f24a40c2f74ee0e53c82980

Published

On Arc Testnet, block 70093156: 0xedb7b832f4ebf6781b5ecd2ed241c435b862f4d3761541fa31adc1831b8c44a0