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Create a Basic Cryptocurrency Wallet Application

Build a secure and user-friendly wallet that enables users to manage their crypto holdings with features like balance view, transfers, and transaction history.
Why Build a Cryptocurrency Wallet?

Cryptocurrency wallets are essential tools in the blockchain ecosystem, enabling users to store and interact with digital currencies securely. A wallet app provides a real-world understanding of Web3 account management, gas fees, and transactions.

Project Objective

Develop a lightweight wallet that connects to the Ethereum blockchain (or testnet), allows users to generate or import wallets, view token balances, send/receive crypto, and view their transaction history.

Key Features of the Wallet App

Wallet Creation & Import

Users can create a new wallet or import an existing one using a private key or mnemonic phrase.

Send & Receive Tokens

Supports secure token transfer to other addresses with gas fee estimation and transaction status.

Balance Viewer

Display real-time ETH and token balances fetched from the blockchain.

Transaction History

Pull and display recent transactions using blockchain explorers or APIs like Etherscan.

System Architecture Overview

The wallet frontend is built using React Native or React.js, with Ethers.js to interact with the blockchain. Users authenticate via local storage or encrypted key management, and APIs are used to fetch real-time balances and transaction details.

  • Ethers.js or Web3.js for blockchain interactions
  • Wallet generation and import via mnemonic/private key
  • React or React Native interface
  • Use of Etherscan or Moralis for fetching transactions
  • LocalStorage or encrypted storage for key handling
Recommended Tech Stack

Frontend

React.js or React Native with Tailwind CSS

Blockchain API

Ethers.js or Web3.js for Ethereum integration

Data Services

Etherscan API or Moralis Web3 API

Storage & Security

LocalStorage (web) or SecureStore (mobile) for key management

Development Roadmap

1. Implement Wallet Creation/Import

Use Ethers.js to allow generation and recovery using mnemonic or private key.

2. Integrate ETH and Token Balance Viewer

Fetch and display ETH and ERC-20 token balances using blockchain APIs.

3. Add Send/Receive Functionality

Allow users to send ETH or tokens, estimate gas, and confirm transactions.

4. Display Transaction History

Integrate Etherscan/Moralis to show past transfers and confirmations.

5. Secure Key Management

Ensure private keys are encrypted and never leave the user’s device.

Helpful Resources & Tutorials

Build a Simple Yet Powerful Web3 Wallet

Let users take control of their crypto assets with a secure, intuitive wallet experience powered by blockchain.

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