addrbookFor publishers
← The evidence ledger

Evidence row 63917

Observed , by baseline/1.

Kind
listing
About
source_record x402_bazaar:https://agentshelf.syntexa.ch/v1/base-erc20-balance
Recorded
Previous row
None: the first of its kind about this subject
Body SHA-256
35aedf090288dfd416c8a91207183e364ea7107b05d9e0239f02c7e7dcc762fe
Leaf
0xe2e80a8d105c9d868ee9036ec7e292919b0978b2bc2273dfc1ec68d89411b596

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://agentshelf.syntexa.ch/v1/base-erc20-balance"
    ]
  ],
  "name": "agentshelf.syntexa.ch/v1/base-erc20-balance",
  "owner_address": "0x1d61faa032d3f40d9c470d2bf3a3f53de0e55a38",
  "raw": {
    "accepts": [
      {
        "amount": "3000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 60,
        "network": "eip155:8453",
        "payTo": "0x1D61FAA032d3f40D9C470D2bf3A3f53De0E55a38",
        "scheme": "exact"
      }
    ],
    "description": "Call when an agent needs an ERC-20 balance_raw and human balance for token and owner on Base. Example token is Circle USDC. decimals() scales the human balance. Distinct from base-balance (native ETH). Read-only. No spend. Send JSON {\"token\":\"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913\",\"owner\":\"0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045\"}. Exact $0.003 USDC on Base. Try unpaid POST /v1/sandbox/base-erc20-balance first.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "owner": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
              "token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "balance": "2.5",
              "balance_raw": "2500000",
              "billed": true,
              "decimals": 6,
              "network": "eip155:8453",
              "ok": true,
              "owner": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
              "receipt_id": "rcpt_01EXAMPLE000000000000000",
              "token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "warnings": []
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "examples": [
                    {
                      "owner": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
                      "token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
                    }
                  ],
                  "properties": {
                    "owner": {
                      "description": "Wallet whose token balance is read. Example: 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045. EIP-55 or all one case. Returns balance_raw and a human balance from decimals().",
                      "examples": [
                        "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
                      ],
                      "type": "string"
                    },
                    "token": {
                      "description": "ERC-20 contract on Base mainnet. Example: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 (Circle USDC). EIP-55 or all one case. Paired with owner. Distinct from base-balance, which reads native ETH.",
                      "examples": [
                        "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
                      ],
                      "type": "string"
                    }
                  },
                  "required": [
                    "token",
                    "owner"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "additionalProperties": false,
                  "examples": [
                    {
                      "balance": "2.5",
                      "balance_raw": "2500000",
                      "billed": true,
                      "decimals": 6,
                      "network": "eip155:8453",
                      "ok": true,
                      "owner": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
                      "receipt_id": "rcpt_01EXAMPLE000000000000000",
                      "token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
                      "warnings": []
                    }
                  ],
                  "properties": {
                    "balance": {
                      "examples": [
                        "2.5"
                      ],
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "balance_raw": {
                      "examples": [
                        "2500000"
                      ],
                      "type": "string"
                    },
                    "billed": {
                      "examples": [
                        true
                      ],
                      "type": "boolean"
                    },
                    "decimals": {
                      "anyOf": [
                        {
                          "minimum": 0,
                          "type": "integer"
                        },
                        {
                          "type": "null"
                        }
                      ],
                      "examples": [
                        6
                      ]
                    },
                    "network": {
                      "const": "eip155:8453",
                      "examples": [
                        "eip155:8453"
                      ],
                      "type": "string"
                    },
                    "ok": {
                      "const": true,
                      "examples": [
                        true
                      ],
                      "type": "boolean"
                    },
                    "owner": {
                      "examples": [
                        "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
                      ],
                      "type": "string"
                    },
                    "receipt_id": {
                      "examples": [
                        "rcpt_01EXAMPLE000000000000000"
                      ],
                      "type": "string"
                    },
                    "token": {
                      "examples": [
                        "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
                      ],
                      "type": "string"
                    },
                    "warnings": {
                      "default": [],
                      "examples": [
                        []
                      ],
                      "items": {
                        "type": "string"
                      },
                      "type": "array"
                    }
                  },
                  "required": [
                    "ok",
                    "receipt_id",
                    "billed",
                    "token",
                    "owner",
                    "network",
                    "decimals",
                    "balance_raw",
                    "balance"
                  ],
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-11T10:14:10.944Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-11T10:14:10.742Z"
    },
    "resource": "https://agentshelf.syntexa.ch/v1/base-erc20-balance",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Call when an agent needs an ERC-20 balance_raw and human balance for token and owner on Base. Example token is Circle USDC. decimals() scales the human balance. Distinct from base-balance (native ETH). Read-only. No spend. Send JSON {\"token\":\"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913\",\"owner\":\"0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045\"}. Exact $0.003 USDC on Base. Try unpaid POST /v1/sandbox/base-erc20-balance first."
}

What the leaf hashes

{"body":"35aedf090288dfd416c8a91207183e364ea7107b05d9e0239f02c7e7dcc762fe","id":63917,"kind":"listing","method":"baseline/1","observed_us":1793025455794645,"prev":null,"subject":"x402_bazaar:https://agentshelf.syntexa.ch/v1/base-erc20-balance","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (296695 rows).

  1. 0xe2e7cb4d270779484195cf853796b6f843619b34a2daa5b3ec557a1cc8b5ed8d
  2. 0xe607839154721772075f569714f5fab6b4ff1a3e792aa3a8b363088ae1b671e4
  3. 0x76b5f064902514d711e941bff6104fcda9bddf00150e264e129ad8a7f58e20ab
  4. 0x980582bad40e7d4d0fb6810aa0a25bbbbad33aad80be601840f9ad9c1a86e86a
  5. 0x221f7a8b6306a06b7e7aacaa39624e1881549a4aefd04809b8f1e599ecb4c798
  6. 0x7b827f43c805eb64d1d9013ebfe6268d5a93b822db2e5de1df9cf9320bac9db8
  7. 0x098fb318d3149609c6b44da46d11693be4b2f415f5ccdf255f0aa22a3b18e0f6
  8. 0x5c6591ad9f620dc5da3ea99c3ba95330359c5fcdf3fb63008d4dfeb607e4dddd
  9. 0x3296b15eaa3d7ffb7ac924a5c229cad634b5ff3748570e9587b0696853442cc0
  10. 0x5692ec6ba832f6cc4dbe53481b47f761ef42ae1d89759bce2e5e78dfc6a18191
  11. 0xdf3f95c9d849961694a4ee89abdfac5cbfb97e2ba08a6ad3eefe16691598b4f5
  12. 0x8e135936797442c4eea61915f2c9f8f6df06e1322204cd0e6986ada3e54c77cc
  13. 0xc0924a0807e534382f518663123231c317124338831a2b310de2c17b09677086
  14. 0x9bc5fc98278b9f6dc18c66c6e162aefd5244be03170d41bc5161f58ad11beed7
  15. 0x95657a7d540ed6cac0bde9995782333b2562a9a6641853269ac95148827410f0
  16. 0x5fb5dda563336cd1bc1b9f44c52b76237ae72ed2145cb9290f39f304ca7dd678
  17. 0x74a0a08e4e7ab9aa5bfbead33dec7e1c7e8e364cff69a63720d764bbe987aadc
Day root
0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
Chained
0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
Published
On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae

How to check it · This row as JSON