EIP-7702 Batch Call Delegation Example

A demonstration of EIP-7702 implementation using Hardhat. This project showcases how to implement batch call delegation with EIP-7702 signature validation.

Key Features

• Batch execution of multiple transactions
• EIP-7702 compliant signatures and authorization (using type 0x04 transactions)
• Support for ETH transfers and contract calls
• RLP encoding for transaction data

Smart Contract

BatchCallDelegation.sol:

• Main contract for executing multiple calls
• Handles call data, target address, and value for each transaction
• Emits events for execution results
• Implements batch delegation pattern

Development Setup and Execution Steps

This project is configured to run on the Mekong testnet. To get started:

# Install dependencies
npm install

# Configure .env file
PRIVATE_KEY="your_private_key"
RPC_URL="https://rpc.mekong.ethpandaops.io"
RECIPIENT_ADDRESS="your_recipient_address"

# Step 1: Deploy the contract
npx hardhat run scripts/deployBatchCallDelegation.js --network mekong

# Step 2: Execute batch calls
npx hardhat run scripts/executeBatchCallDelegation.js --network mekong

During deployment, a deployments/{network}.json file will be created containing the deployed contract address and related information. The execution script then uses this deployment information to perform the batch calls.

Testnet Information

This project is tested on Mekong testnet:

• Chain ID: 0x01a5ee289c
• RPC URL: https://rpc.mekong.ethpandaops.io

Contract Structure

struct Call {
    bytes data;    // Call data for the transaction
    address to;    // Target address
    uint256 value; // ETH value to send
}

The contract allows multiple calls to be executed in a single transaction, with proper authorization and signature verification according to EIP-7702 standards.

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Reference: Viem EIP-7702 Documentation

Coworkers

• @Miller-kk - Account Abstraction pioneer
• @shamshod01 - Blockchain & AI Enthusiast