L1-L2 Block Correspondence Script

This Python script allows you to find the corresponding L1 block for a given L2 block on the Rollux network. It leverages Web3.py to interact with the Ethereum node and the L1Block contract deployed on the L2 network.

Prerequisites

Before running the script, ensure you have Python 3.7 or higher installed.

The script depends on the packages listed in requirements.txt. To install the required packages, run:

pip install -r requirements.txt

Usage

Clone the Repository

git clone https://github.com/your-username/l1-l2-block-correspondence.git
cd L1BlockFetcher

Running the script

python main.py --l2_block_number <L2_BLOCK_NUMBER> [--rpc_url <RPC_URL>] [--l1block_contract <L1BLOCK_CONTRACT_ADDRESS>]

Parameters

• --l2_block_number (required): The L2 block number you want to query.
• --rpc_url (optional): The RPC URL for the Rollux node. Defaults to https://rpc.rollux.com.
• --l1block_contract (optional): The address of the L1Block contract. Defaults to 0x4200000000000000000000000000000000000015.

Example

To find the corresponding L1 block for L2 block number 5000, run:

python main.py --l2_block_number 5000

You can also specify a custom RPC URL and L1Block contract address:

python main.py --l2_block_number 5000 --rpc_url "https://custom-rpc-url.com" --l1block_contract "0xYourContractAddress"

Output

• The corresponding L1 block number for the specified L2 block.
• The timestamp of the L1 block.
• The sequence number of L2 blocks within the current epoch.