Overview

The Block Builder node is a critical component responsible for submitting blocks to the INTMAX Network. This document provides detailed instructions for setting up and operating the Block Builder efficiently.

Key Features

The Block Builder posts blocks to Scroll from the Ethereum account specified in the BLOCK_BUILDER_PRIVATE_KEY environment variable. It is a core component that interacts with the Scroll network. To support future enhancements, the Block Builder is designed to accept external transactions, requiring proper domain or IP address configuration for external access.

For stable operation in the mainnet environment, ensure the Block Builder runs continuously.

• Transaction Submission:
  • The Block Builder collects transactions from external sources and submits them to the Scroll network as blocks. This ensures efficient interaction with the broader network and enables seamless block posting.
• Fee Collection:
  • The Block Builder collects a fee of $0.005 per user per transaction.
  • For each block, it can accumulate up to $0.005 * 128 in fees, ensuring a scalable and incentivized operation.
• Online Status Announcement
  • The Block Builder executes a transaction to the Block Registry Contract once a day to notify the indexer that it is online. The indexer plays a critical role in sharing the most suitable Block Builder URL with users, ensuring efficient and reliable network operations.

Requirements

• Recommended Configuration:
  • 2 vCPU
  • 4 GB RAM
  • 10 GB SSD
• Minimum Configuration:
  • 1 vCPU
  • 1 GB RAM
  • 4 GB SSD

Getting Started

Setting Up Environment Variables

Create a .env file and configure it with the following settings.

Replace the placeholders with your actual credentials and URLs:

• <private-key>: The Ethereum private key of an account that holds Scroll Sepolia ETH
• <your-block-builder-url>: The URL of your BlockBuilder that is accessible from the internet.
• <your-scroll-sepolia-rpc-url>: The RPC endpoint for Scroll Sepolia (Alchemy or custom)

Ensure that the Scroll Sepolia network is enabled in your Alchemy dashboard.