Evidence row 117628

Observed 26 Oct 2026, 14:40 UTC, by baseline/1.

Kind: listing
About: source_record x402_bazaar:https://onchaincheck.dev/optimism/contract
Recorded: 26 Oct 2026, 14:40 UTC
Previous row: None: the first of its kind about this subject
Body SHA-256: 8f8266207fbf33cfec6d2c09637f038e68a58c413bc4767a874cdb105ec20896
Leaf: 0x8aa48a6e6d478620f2865962610f429b80cc6ec0332222d24b1ac1ba3a7a3611

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://onchaincheck.dev/optimism/contract"
    ]
  ],
  "name": "OP Mainnet 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 OP Mainnet 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": "0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "address": "0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85",
              "bytecodeBytes": 1852,
              "chain": "optimism",
              "decimals": 6,
              "isContract": true,
              "kind": "ERC-20 token",
              "name": "USD Coin",
              "nativeBalance": "0",
              "proxy": {
                "admin": "0xbB8a939e2B1923d248AC4c2f6aEd0a4D71CB18A3",
                "implementation": "0xdEd3b9a8DBeDC2F9CB725B55d0E686A81E6d06dC",
                "upgradeable": true
              },
              "standards": {
                "erc1155": false,
                "erc165": false,
                "erc20": true,
                "erc721": false
              },
              "symbol": "USDC",
              "totalSupply": "141636562.037185"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "additionalProperties": false,
                  "properties": {
                    "address": {
                      "description": "Any address on OP Mainnet",
                      "pattern": "^0x[0-9a-fA-F]{40}$",
                      "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": "2026-10-24T09:19:13.576Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-24T09:19:13.302Z"
    },
    "resource": "https://onchaincheck.dev/optimism/contract",
    "serviceName": "OP Mainnet Onchain Data",
    "tags": [
      "optimism",
      "onchain",
      "erc20",
      "token",
      "wallet"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Identify what lives at a OP Mainnet 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":"8f8266207fbf33cfec6d2c09637f038e68a58c413bc4767a874cdb105ec20896","id":117628,"kind":"listing","method":"baseline/1","observed_us":1793025611696528,"prev":null,"subject":"x402_bazaar:https://onchaincheck.dev/optimism/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