FAQ

How does this tool work?

Checks if bytecode exists at an address — the same method as Etherscan.

Has bytecode → Smart Contract
No bytecode → Wallet (EOA)

Is it accurate?

Scenario	Result
Deployed contract	✅ Contract
Regular wallet	💰 Wallet
Self-destructed contract	💰 Wallet
Proxy contract	✅ Contract
CREATE2 (not deployed)	💰 Wallet

What is ERC-4337?

Account Abstraction lets smart contracts act as wallets. For ERC-4337 transactions, this tool extracts the actual sender (smart wallet) from the bundler transaction.

What is EIP-7702?

EIP-7702 lets regular wallets temporarily delegate execution to a smart contract.

🔗 EOA with Delegation → Has EIP-7702 delegation
✅ Smart Contract → Permanent bytecode
💰 Wallet → Regular EOA

Why does a network fail?

Public RPCs may occasionally timeout or be rate-limited. Try again in a few seconds.

What do confidence levels mean?

100% — Definitely a contract (bytecode found, or program loader on Solana).

95% — Very likely a wallet (no code, has balance).

75% — Probably a wallet (no code, no balance — could be unused or, rarely, CREATE2).

Supported: Ethereum, Polygon, BSC, Arbitrum, Optimism, Avalanche, Base, Tron, Solana

💡 Special thanks to Valencia for contributing this idea

Smart Contract Checker

Check if an address or transaction sender is a smart contract or a regular wallet.

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Smart Contract Checker

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