Evidence row 72053

Observed 26 Oct 2026, 14:38 UTC, by baseline/1.

Kind: listing
About: source_record x402_bazaar:https://ca-tax-api-mainnet.lxtap.workers.dev/base/contract
Recorded: 26 Oct 2026, 14:38 UTC
Previous row: None: the first of its kind about this subject
Body SHA-256: 60f2052089590fc983abbdad5148ee8c1aee3f1c30efb94d5431f37cab8cda07
Leaf: 0x0a537c8652c8feca8ccae90cbbd669d99c4ad9fcfa7bfbfaa3a26ebcf9dce050

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://ca-tax-api-mainnet.lxtap.workers.dev/base/contract"
    ]
  ],
  "name": "Base 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": "Identify what lives at a Base address: wallet (EOA, including EIP-7702 delegation) or contract, which token standard it implements (ERC-20, ERC-721, ERC-1155), name and symbol, upgradeable-proxy implementation and admin, smart-wallet proxies, bytecode size, nonce and ETH balance.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "bytecodeBytes": 1852,
              "chain": "base",
              "decimals": 6,
              "isContract": true,
              "kind": "ERC-20 token",
              "name": "USD Coin",
              "nativeBalance": "0.009800646158085843",
              "proxy": {
                "admin": "0x4fc7850364958d97B4d3f5A08f79db2493f8cA44",
                "implementation": "0x2Ce6311ddAE708829bc0784C967b7d77D19FD779",
                "upgradeable": true
              },
              "standards": {
                "erc1155": false,
                "erc165": false,
                "erc20": true,
                "erc721": false
              },
              "symbol": "USDC",
              "totalSupply": "4291989037.45169"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "additionalProperties": false,
                  "properties": {
                    "address": {
                      "description": "Any address on Base",
                      "pattern": "^0x[0-9a-fA-F]{40}$",
                      "type": "string"
                    }
                  },
                  "required": [
                    "address"
                  ],
                  "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": "2026-10-23T08:36:17.792Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-23T08:36:17.518Z"
    },
    "resource": "https://ca-tax-api-mainnet.lxtap.workers.dev/base/contract",
    "serviceName": "Base Onchain Data",
    "tags": [
      "base",
      "onchain",
      "erc20",
      "token",
      "wallet"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Identify what lives at a Base address: wallet (EOA, including EIP-7702 delegation) or contract, which token standard it implements (ERC-20, ERC-721, ERC-1155), name and symbol, upgradeable-proxy implementation and admin, smart-wallet proxies, bytecode size, nonce and ETH balance."
}

What the leaf hashes

{"body":"60f2052089590fc983abbdad5148ee8c1aee3f1c30efb94d5431f37cab8cda07","id":72053,"kind":"listing","method":"baseline/1","observed_us":1793025485196920,"prev":null,"subject":"x402_bazaar:https://ca-tax-api-mainnet.lxtap.workers.dev/base/contract","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).
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Day root: 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
Chained: 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
Published: On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae

How to check it · This row as JSON