padelmaps.org Smart Contract Decoder

{
  "input": {
    "body": {
      "chain": "ethereum",
      "address": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48"
    },
    "type": "http",
    "method": "POST",
    "bodyType": "json"
  }
}

{
  "data": {
    "chain": "ethereum",
    "address": "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
    "analysis": {
      "purpose": "Upgradeable Proxy for USDC Stablecoin",
      "summary": "FiatTokenProxy is a transparent upgradeable proxy contract used by Centre (Circle/Coinbase) for the USDC stablecoin. It delegates all non-admin calls to an underlying implementation contract, while allowing an admin to upgrade the implementation address or transfer admin rights. This is the standard ZeppelinOS AdminUpgradeabilityProxy pattern.",
      "ai_model": "claude-opus-4-6",
      "risk_level": "medium",
      "token_info": {
        "is_token": false,
        "standard": "None",
        "has_taxes": false,
        "tax_details": "The proxy itself has no token logic. Token behavior (ERC20, fees, blacklisting, minting, pausing) is entirely determined by the implementation contract it points to."
      },
      "ai_provider": "claude-cli",
      "key_functions": [
        {
          "name": "upgradeTo",
          "description": "Allows the admin to change the implementation contract address, effectively upgrading all token logic"
        },
        {
          "name": "upgradeToAndCall",
          "description": "Upgrades the implementation and immediately calls a function on it (used for initializing new implementations)"
        },
        {
          "name": "changeAdmin",
          "description": "Transfers proxy admin rights to a new address"
        },
        {
          "name": "admin",
          "description": "Returns the current proxy admin address (only callable by admin)"
        },
        {
          "name": "implementation",
          "description": "Returns the current implementation address (only callable by admin)"
        },
        {
          "name": "fallback",
          "description": "Delegates all non-admin calls to the implementation contract via delegatecall"
        }
      ],
      "access_control": "A single admin address has exclusive control over upgrades and admin transfers. The admin CANNOT interact with the underlying implementation through the proxy (transparent proxy pattern). All non-admin callers are transparently forwarded to the implementation.",
      "security_notes": [
        "The admin has unrestricted upgrade power and can replace the entire token implementation at any time, which is a significant centralization risk",
        "upgradeToAndCall uses a low-level call pattern (address(this).call.value(msg.value)(data)) that forwards all gas and only checks a boolean return, which is acceptable for this pattern but less safe than modern Solidity practices",
        "Uses Solidity 0.4.24 which lacks modern safety features like built-in overflow checks, though the proxy itself does minimal arithmetic",
        "Storage slot constants are validated via assert in constructors, preventing misconfiguration",
        "The transparent proxy pattern correctly prevents the admin from accidentally calling implementation functions, avoiding function selector clashing",
        "No timelock or multisig is enforced at the proxy level — upgrade governance depends entirely on what entity controls the admin address",
        "This is a known, audited, production contract (USDC) that has been live on Ethereum mainnet since 2018 and secures tens of billions of dollars"
      ],
      "risk_explanation": "The contract itself is well-audited and battle-tested as the USDC proxy. Risk is rated medium (not low) because the admin holds unilateral, instant upgrade authority with no on-chain timelock or multisig enforcement, meaning the entire token logic can be replaced at any time. For a centralized regulated stablecoin this is by design, but it represents a real centralization and trust dependency on Circle/Centre."
    },
    "verified": true,
    "chain_name": "Ethereum",
    "explorer_url": "https://etherscan.io/address/0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48#code",
    "contract_name": "FiatTokenProxy",
    "risk_analysis": {
      "flags": [
        "delegatecall",
        "assembly"
      ],
      "risk_level": "low",
      "risk_score": 20,
      "flag_details": {
        "assembly": "Low-level code that bypasses Solidity safety checks",
        "delegatecall": "Can execute arbitrary code in contract's context"
      },
      "patterns_found": 2
    },
    "compiler_version": "v0.4.24+commit.e67f0147",
    "source_available": true,
    "optimization_used": false
  },
  "cached": false,
  "success": true,
  "timestamp": "2026-06-20T05:32:57.786058+00:00"
}