💰 MultiSig Wallet (EVM)

A production-style MultiSig Wallet DApp built with Solidity, Hardhat, React + Wagmi.
This project demonstrates how a decentralized multi-signature wallet works, with support for:

• ✅ ETH transfers
• ✅ ERC-20 token transfers
• ✅ Executing arbitrary smart contract calls
• ✅ Owner management (add/remove owners with multi-sig approval)
• ✅ Factory contract for creating new wallets

Deployed on Ethereum Sepolia testnet with a hosted frontend.

🚀 Live Demo

Frontend: multisig.aslamthachapalli.com
Contracts (Sepolia):

• MultiSigFactory: 0x57CBe681FbfBeE93051E921797a237Bc42459d2A
• Example MultiSigWallet: 0x561477E09603d6476Fc5433Bb6823b5565f2Ee6a

Watch Demo

📖 Project Overview

A MultiSig wallet is a smart contract where multiple owners must approve a transaction before it is executed.
This increases security for organizations, DAOs, and treasuries.

Flow in this DApp:

1. Create a new MultiSig wallet from the factory.
2. Add multiple owners and set the required number of confirmations.
3. Owners can:
   • Deposit ETH to the wallet.
   • Submit a transaction.
   • Approve or revoke approval.
   • Execute transaction once enough confirmations are collected.
4. Owners can also propose adding/removing members — which itself requires approvals.

⚡ Local Setup

1. Clone the Repo

2. Install Dependencies

3. Deploy Contracts to Hardhat local chain.

3.1. Run Hardhat Node

Open Terminal 1

npx hardhat node

• This will start a local test chain in your machine.
• This Hardhat local chain will give 20 test account addresses with 10,000 ETH each.
• Add your preferred number of accounts to your metamask wallet for better interaction with the dapp.

3.2. Deploy contract to the local chain

Open Terminal 2

npx hardhat ignition --network localhost deploy ignition/modules/MultiSigFactory.ts

• This will deploy the MultiSigFactory contract to the local chain.
• Copy the deployed contract address displayed in the terminal.

4. Add Environment Variables (Frontend)

cd frontend
cp .env.example .env

• Add the Envs in you .env file.

VITE_ETH_SEPOLIA_RPC=http://localhost:8545 # To connect with the hardhat local node.
VITE_MULTISIG_FACTORY_ADDRESS=0x... # Add your copied contract address from Hardhat local chain.

4. Run Frontend

cd ../frontend
npm run dev

Visit http://localhost:3000 🚀

⭐️ Show Your Support

If you found this project helpful, please ⭐️ the repo!