Bridge to Boba Network

WHAT IT DOES

This tool enables you to bridge ETH from Ethereum Mainnet to Boba Network, a leading optimistic rollup Layer 2 solution that offers hybrid compute capabilities and low transaction fees. It reads your current ETH balance on Ethereum Mainnet, the Boba Network bridge contract details, and the current gas price to provide an accurate cost estimate before you commit. The tool then constructs and submits a transaction to the Boba Network bridge contract, depositing your specified amount of ETH to the Boba Network, where it becomes available as Boba-native ETH.

Boba Network is an Ethereum Layer 2 (L2) that combines optimistic rollup technology with hybrid compute features, enabling developers to run off-chain computation and access Web2 APIs through smart contracts. The bridge uses the official Boba Network bridge infrastructure to securely transfer ETH from Ethereum to Boba, making it easy to onboard to the Boba ecosystem and access its growing DeFi and developer applications. Boba Network is designed to support developers building the next generation of decentralized applications with enhanced compute capabilities.

HOW TO USE

Connect your wallet using the "connect" button. Ensure you are connected to Ethereum Mainnet (chain ID 1) — the tool will display your current chain ID and ETH balance. Enter the amount of ETH you wish to bridge to Boba Network in the input field. The tool will display the bridge contract address and estimate the gas cost for the deposit transaction.

Review the bridge summary, then click "bridge ETH to Boba" to sign and submit the transaction through your wallet. The tool will wait for confirmation and display the transaction details on Etherscan. After the transaction is confirmed on Ethereum Mainnet, your funds will be processed by the Boba Network bridge and will appear on Boba Network. This process typically takes a few minutes, depending on network congestion.

TECHNICAL MECHANISM — BOBA NETWORK OPTIMISTIC ROLLUP BRIDGE DEPOSIT

The tool interacts with the Boba Network L1StandardBridge contract, which serves as the entry point for depositing ETH from Ethereum to Boba Network. The bridge's depositETH() function accepts ETH as value and handles the underlying mechanics of submitting a transaction to the Boba Network inbox contract. The bridge uses a combination of Ethereum layer 1 transactions and Boba Network's optimistic rollup messaging protocol to securely transfer assets between chains.

When you submit a deposit, the bridge contract sends your ETH to the StandardBridge, which then forwards it to the Boba Network bridge's inbox contract. The Boba Network sequencer processes the inbox transaction, credits your account on L2 with the equivalent amount of Boba-native ETH, and produces a receipt. Boba Network is an optimistic rollup, which means it assumes transactions are valid by default but allows for fraud proofs to be submitted during a challenge window. The bridge uses secure multi-signature validators and fraud proofs to ensure the integrity of the transfer. Boba's unique hybrid compute feature allows developers to execute off-chain computation and access Web2 APIs directly from their smart contracts, making it a powerful platform for building sophisticated decentralized applications. The bridge is the primary entry point for ETH into the Boba ecosystem, enabling participation in Boba's DeFi applications and developer tools.

WHAT IT CANNOT SEE

This tool cannot estimate exact gas costs without a live RPC call, and gas prices on Ethereum Mainnet may change between quoting and execution. It cannot guarantee bridge finality times — while typical deposits take minutes, network congestion may extend this time. The tool cannot verify the bridge contract address is correct beyond the pre-configured mapping, and if the mapping becomes outdated, the transaction could fail or be sent to the wrong contract. It cannot cancel a transaction once submitted, and if the transaction fails due to gas issues or contract errors, you may still pay gas fees. The tool cannot handle bridging from non-Ethereum chains, nor can it bridge tokens other than ETH. It also does not support bridging from Boba Network back to Ethereum or handling of ERC-20 tokens.

PLEASE NOTE — ETHEREUM MAINNET ONLY

This tool works exclusively on Ethereum Mainnet (chain ID 1). You must be connected to Ethereum Mainnet to use this tool. It does not support bridging from other networks such as Polygon, BNB Smart Chain, or from Boba Network back to Ethereum. The tool only bridges native ETH — it does not support ERC-20 tokens or other assets. Always verify that you are connected to the correct network and that the bridge contract address displayed matches the official Boba Network bridge address before submitting a transaction. Using the wrong network or an outdated contract address will result in transaction failure and loss of gas fees. Boba Network uses the same ETH token as Ethereum, so your bridged ETH will be usable immediately on Boba Network applications, including those leveraging its hybrid compute features.