L1-to-Blast Bridge-and-Batch-Send Tool

WHAT IT DOES

L1-to-Blast Bridge-and-Batch-Send Tool automates the complete workflow of bridging ERC-20 tokens from Ethereum mainnet to Blast L2 and then distributing them to multiple recipients in a single operation. Connect your wallet on Ethereum mainnet, specify the token and amount to bridge, and provide a list of Blast addresses with payment amounts. The tool handles the bridge transaction first, then waits for confirmation before executing a batch send on Blast using the BotGentz sender contract. This eliminates the need to manually bridge tokens and then separately run a batch send, saving time and reducing errors. The fee for the batch send is paid in native ETH on Blast.

HOW TO USE

1. Connect your wallet using the built-in connector. Ensure you are on Ethereum mainnet (chain ID 1).

2. Enter the ERC-20 token address on L1 that you want to bridge.

3. Specify the amount to bridge (in token decimals).

4. Set the pay frequency in seconds for the recurring schedule on Blast.

5. Provide a list of recipients and their payment amounts on Blast (one per line, comma-separated).

6. Review the L1 token balance, total recipients, and estimated Blast fee.

7. Click "Bridge & Send" — the tool will execute the bridge transaction, wait for confirmation, and then prompt you to switch to Blast network to complete the batch send.

TECHNICAL MECHANISM

The tool first checks that the wallet is connected to Ethereum mainnet. It reads the token decimals and balance, then initiates the bridge transaction via the Blast standard bridge contract (or compatible ERC-20 bridge). After the bridge transaction is confirmed on L1, the tool monitors for the L2 deposit event. Once the tokens are available on Blast, it uses the shared BotGentz sender contract deployed on Blast to execute a batch send to all recipients in a single transaction. The fee is read live from the sender contract to ensure accuracy. All operations are sequential and awaited, preventing nonce conflicts. The tool does not simulate gas costs beyond the contract fee, relying on the wallet's gas estimation for the bridge transaction.

WHAT IT CANNOT SEE

This tool cannot bridge native gas tokens (ETH) or any token standard other than ERC-20. It cannot bridge tokens that are not standard ERC-20; tokens with fees, rebasing, or tax mechanisms may behave unexpectedly. It cannot recover incorrectly entered recipient addresses or amounts. It does not simulate or estimate gas costs beyond the contract fee. It cannot verify bridge transaction finality beyond the receipt; users should wait for full finality on L2. The tool does not handle tax withholding, benefits, or deductions, and does not support off-ramping to fiat. It cannot bridge to other L2s — only Ethereum to Blast is supported.

PLEASE NOTE

This tool is for EVM-compatible chains only: Ethereum mainnet for bridging and Blast for distribution. Ensure you are on the correct network for each step. The bridge transaction requires L1 gas fees; the batch send requires Blast native ETH for the BotGentz fee. The BotGentz sender contract is a shared, community-audited contract; review its address and owner before each use. All transactions are irreversible.