Coinpad
A real-time cryptocurrency dashboard and transaction explorer built to simplify blockchain data.
Overview
Coinpad is a cryptocurrency dashboard designed to make blockchain data easier to understand for everyday users. Instead of overwhelming users with technical blockchain explorers, Coinpad presents live cryptocurrency prices, wallet analytics, and transaction history through a clean, responsive interface. The application combines real-time market data with blockchain transaction tracking, allowing users to monitor assets and explore wallet activity without navigating multiple websites.
Problem
Most cryptocurrency platforms are built for experienced traders and blockchain enthusiasts. Wallet explorers expose raw blockchain data, while market dashboards often separate pricing, transactions, and portfolio information across multiple products. For someone who simply wants to check market prices, explore a wallet, or verify a transaction, the experience quickly becomes fragmented and unnecessarily technical.
I wanted to build a dashboard that combines market data and blockchain exploration into a single, intuitive interface while keeping the experience fast, minimal, and easy to understand.
Solution
Coinpad brings together live cryptocurrency prices, blockchain transaction tracking, and wallet exploration within a single dashboard. Users can browse more than fifty cryptocurrencies, search and filter assets, maintain a personalized watchlist, and inspect wallet balances or transaction history simply by entering a wallet address or transaction hash.
The interface refreshes market data automatically, displays relative update times, and focuses on presenting blockchain information in language that is accessible without sacrificing useful technical details.
Architecture
The application is built using React and Vite to provide a fast client-side experience. Cryptocurrency market data is retrieved from the CoinGecko API, while blockchain explorer APIs provide wallet balances and transaction information for supported networks including Bitcoin, Ethereum, Litecoin, and USDT.
React Context API manages application-wide state such as the user's watchlist, while reusable service modules separate API logic from UI components. The application is deployed on Vercel with a component-driven architecture designed for scalability and maintainability.
Engineering Decisions
React + Vite for performance.
Vite provides extremely fast development builds while React's component architecture made it easy to separate dashboard widgets, search functionality, charts, and transaction explorers into reusable modules.
External APIs instead of maintaining blockchain infrastructure.
Running blockchain nodes would have added unnecessary complexity for the project. Instead, I integrated trusted public APIs to retrieve market data and blockchain information, allowing me to focus on building a reliable user experience rather than infrastructure management.
Context API for lightweight state management.
Since the application's global state was relatively small, React Context provided a simple solution for managing watchlists without introducing heavier libraries such as Redux.
Challenges
The most challenging part of Coinpad was integrating multiple blockchain APIs into a consistent user experience. Each blockchain exposes wallet addresses, balances, and transaction data differently, requiring custom parsing and normalization before displaying information to users.
Handling asynchronous API requests while maintaining responsive UI updates and graceful loading states also required careful management, particularly when combining live cryptocurrency prices with blockchain transaction lookups.
Lessons Learned
Coinpad significantly improved my understanding of consuming third-party APIs within React applications. I learned how to structure reusable API service layers, manage asynchronous state efficiently, and design dashboards capable of presenting continuously changing information without overwhelming users.
The project also strengthened my understanding of component architecture, responsive design, and organizing medium-sized React applications into maintainable modules.
What I Would Improve
If I continue developing Coinpad, I would introduce authenticated user accounts with persistent portfolios, replace periodic polling with WebSocket-based live market updates, expand support for additional blockchain networks such as Polygon and Solana, and integrate portfolio analytics, price alerts, and AI-powered market summaries.
I would also improve accessibility, optimize performance through intelligent API caching, and redesign the transaction explorer with richer visualizations for wallet activity and fund movement.