Multi-Signature Wallet DApp

A secure, fully-featured multi-signature wallet built for Ethereum.
This DApp allows multiple owners to collectively manage funds, require multiple confirmations for transactions, and set daily/weekly spending limits.
All UI updates are real-time, powered by contract event subscriptions.

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🚀 Live Deployment

Contract Address (Sepolia Testnet):
0x1Ac1Edd80E7FcC6d45Bc6e6bf820234bDe2d7BAA

Live App:
https://multi-signature-wallet-229uw09s4.vercel.app/

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🛠️ Tech Stack

• Smart Contract: Solidity
• Testing & Deployment: Hardhat, ethers.js
• Frontend: React + Vite
• Wallet/Chain Integration: Wagmi, RainbowKit
• UI: Material UI
• Language: Javascript

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✨ Features

• Multi-signature transactions: Require multiple owner confirmations before execution
• Spending limits: Set daily and weekly max transfer amounts
• Time lock: Delay transaction execution for added security
• Owner management: Add, remove, or replace owners
• Pause functionality: Emergency pause/unpause by owners
• Guardian recovery: Guardians can recover the wallet if owners lose access
• Real-time UI: Instant updates for transaction list, wallet balance, and limits via contract events

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📝 Usage

1. Install dependencies

npm install

2. Run local dev server

npm run dev

3. Connect your wallet

• Use RainbowKit modal to connect any EVM wallet (MetaMask, Coinbase, etc.)
• Make sure you are on the Sepolia testnet

4. Interact

• Submit transaction: Propose a transfer from the wallet
• Confirm transaction: Owners can confirm proposed transactions
• Execute transaction: Once enough confirmations & time lock passed, execute
• Set limits: Owners can set daily/weekly ETH transfer limits
• Pause/unpause: Emergency controls for owners

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🧑‍💻 Smart Contract Overview

• MultiSignatureWallet.sol deployed at:
  0x1Ac1Edd80E7FcC6d45Bc6e6bf820234bDe2d7BAA (Sepolia)

• Key functions:

  • submitTransaction(address, value, data)
  • confirmTransaction(uint256 transactionId)
  • executeTransaction(uint256 transactionId)
  • setDailyLimit(uint256)
  • setWeeklyLimit(uint256)
  • pause() / unpause()
  • addOwner(address) / removeOwner(address)

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🧪 Testing

• Tests are written in Hardhat using ethers.js
• Run all tests:

  npx hardhat test

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💡 Development

• Frontend: Located in /frontend
• Smart Contract: Located in /contracts
• Tests: Located in /test

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🌐 Demo Video / Screenshots

Live Demo: https://multi-signature-wallet-229uw09s4.vercel.app/

Screenshots

Dashboard & Wallet Info

Owner Management Panel

Connect Wallet Page

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📄 License

MIT

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🙏 Credits

• Built by anumukul
• Powered by open source: Solidity, Hardhat, ethers.js, React, Wagmi, RainbowKit, Material UI

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🔗 Useful Links

• RainbowKit Docs
• Wagmi Docs
• Sepolia Faucet