Evidence row 219295

Observed 26 Oct 2026, 14:57 UTC, by sync.x402_bazaar/1.

Kind: listing
About: source_record x402_bazaar:https://agents.crowdspark.me/v1/chain/token
Recorded: 26 Oct 2026, 14:57 UTC
Previous row: None: the first of its kind about this subject
Body SHA-256: c8cd5606315e9d19ba1c1fec51b5f681984946f71002e33618e8bb748359845d
Leaf: 0x0c5e28189066003e07d8b3f0f4db25c0e8ab1eb9336645ede18016a1d01a57e8

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://agents.crowdspark.me/v1/chain/token"
    ]
  ],
  "name": "Agent Tools",
  "owner_address": "0x0dea0030a17bf886543a757c55924710258c2eec",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x0dEA0030A17BF886543a757c55924710258c2eec",
        "scheme": "exact"
      }
    ],
    "description": "Token contract inspector for Base, Ethereum, Optimism, Arbitrum and Polygon: is it a contract, ERC20/ERC721/ERC1155 detection, name, symbol, decimals, total supply (raw and formatted), owner, and upgradeable-proxy check (EIP-1967, beacon, EIP-1167 clone, legacy zeppelinos) with implementation and admin addresses. Read live from public RPC. Use before quoting, swapping, listing or paying with a token.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "chain": "base"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "chain": "base",
              "chain_id": 8453,
              "decimals": 6,
              "is_contract": true,
              "name": "USD Coin",
              "owner": "0x3ABd6f64A422225E61E435baE41db12096106df7",
              "proxy": {
                "admin": "0x4fc7850364958d97B4d3f5A08f79db2493f8cA44",
                "implementation": "0x2Ce6311ddAE708829bc0784C967b7d77D19FD779",
                "is_proxy": true,
                "type": "zeppelinos (legacy unstructured storage)"
              },
              "standard": "ERC20",
              "symbol": "USDC",
              "total_supply": "4299464528.64453"
            },
            "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": "Token contract address (0x...)",
                      "type": "string"
                    },
                    "chain": {
                      "description": "Chain, default base",
                      "enum": [
                        "base",
                        "ethereum",
                        "optimism",
                        "arbitrum",
                        "polygon"
                      ],
                      "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": "2026-10-26T13:25:39.187Z",
    "quality": {
      "lastCalledAt": "2026-10-26T13:25:39.187Z"
    },
    "resource": "https://agents.crowdspark.me/v1/chain/token",
    "serviceName": "Agent Tools",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Token contract inspector for Base, Ethereum, Optimism, Arbitrum and Polygon: is it a contract, ERC20/ERC721/ERC1155 detection, name, symbol, decimals, total supply (raw and formatted), owner, and upgradeable-proxy check (EIP-1967, beacon, EIP-1167 clone, legacy zeppelinos) with implementation and admin addresses. Read live from public RPC. Use before quoting, swapping, listing or paying with a token."
}

What the leaf hashes

{"body":"c8cd5606315e9d19ba1c1fec51b5f681984946f71002e33618e8bb748359845d","id":219295,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793026657573309,"prev":null,"subject":"x402_bazaar:https://agents.crowdspark.me/v1/chain/token","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