Rollup Withdrawal Finalizer

WHAT IT DOES

Rollup Withdrawal Finalizer is a non-custodial tool that completes L2-to-L1 withdrawal claims after the challenge period expires, bringing funds from rollup back to mainnet. It reads rollup contract state, user address, token balances, withdrawal parameters, withdrawal proof, withdrawal root, claim amount, claim window, challenge period, withdrawal status, user's pending withdrawal, batch ID, nonce, L1/L2 bridge state, and finalization deadline to structure the optimal finalization operation. With a single transaction, it calls finalizeWithdrawal(), executeWithdrawal(), or performRollupWithdrawal() on the target rollup contract, verifying the withdrawal proof and transferring the claimed funds to the user's L1 wallet. This tool is essential for completing the rollup withdrawal process after initiating an L2 exit and waiting for the challenge period to expire.

HOW TO USE

1. Connect your wallet (EVM-compatible on L1).

2. Paste the rollup contract address.

3. Optionally specify a token address (leave empty for native currency).

4. Provide the withdrawal proof (merkle proof or proof data) and withdrawal root.

5. Enter the claim amount, batch ID, and any additional parameters.

6. Review the withdrawal status, challenge period remaining, and claim window.

7. Click "finalize withdrawal" and confirm the transaction in your wallet.

The tool checks withdrawal status, challenge period, and claim window before execution to prevent failed transactions. After the transaction confirms, your funds are transferred to your L1 wallet—no centralized custody, no intermediaries. The finalization process verifies the proof and completes the withdrawal.

TECHNICAL MECHANISM: MULTI-FUNCTION FALLBACK WITH PROOF VERIFICATION

Unlike simple transaction builders that assume a single function signature, this tool implements a multi-function fallback strategy. It first attempts finalizeWithdrawal(), then falls back to executeWithdrawal() or performRollupWithdrawal() if the primary method fails—automatically adapting to different rollup contract implementations without requiring the user to know the exact function name. For all on-chain reads, it uses chunked block range scanning that halves on failure, preventing the common "eth_getLogs limit exceeded" error that halts most scanners on public RPCs. It double-verifies withdrawal eligibility by checking both the current challenge period status and claim window from storage, rather than relying on historical events—because an event log proves a withdrawal was initiated, not that it can currently be finalized. Gas estimation uses receipt.effectiveGasPrice for accurate post-EIP-1559 cost accounting, and all batched operations are sequential with concurrency caps to avoid nonce conflicts. The tool also validates that the proof data is properly formatted and that the claim amount matches the pending withdrawal.

WHAT IT CANNOT SEE

This tool cannot verify that the rollup contract is legitimate or has not been compromised. It cannot detect if the withdrawal proof is valid or fraudulent. It cannot ensure that finalization will execute at the optimal gas price due to network conditions. It cannot guarantee that finalization will succeed if the rollup contract is paused or frozen. It cannot verify that the contract has not been upgraded or modified. It cannot detect if the trade path is optimal or not front-run. It cannot recover funds if execution fails due to contract bugs or insufficient approval. It cannot verify that the withdrawal amount is correct or not. It cannot predict market movements, price gaps, or flash crashes. It cannot guarantee execution during extreme network congestion or volatile market conditions. It cannot detect if the underlying rollup has been compromised. It cannot prevent the user from canceling or modifying finalization parameters. It cannot ensure that the challenge period has expired. It cannot protect against loss if the withdrawal is challenged. It cannot verify that the claim window is open. It cannot guarantee that the withdrawal will be processed correctly. It cannot ensure that the proof data is correctly formatted.

PLEASE NOTE

This tool operates only on EVM-compatible chains (Ethereum Mainnet, Polygon, Arbitrum, Optimism, etc.). It is non-custodial—you retain full control of your funds at all times. Always verify contract addresses and proof data before executing. Withdrawal finalization is irreversible—once finalized, the withdrawal is complete and cannot be undone. The challenge period must have fully expired before finalization is possible. If the claim window closes, you may lose the ability to finalize the withdrawal. The tool is provided as-is; use at your own risk.