Manage assets across multiple blockchains: swaps, approvals & balances in one dashboard
Cross-Chain Control Center is a unified dashboard designed to simplify the management of crypto assets across multiple EVM-compatible blockchains. By integrating Blockscout’s Scout Apps, the platform allows users to connect their wallet via MetaMask, view balances, monitor and revoke token approvals to prevent unauthorized spending, and perform cross-chain token swaps directly within the dashboard. Supporting chains such as Ethereum, Base, Optimism, and Gnosis, it provides a single interface for both everyday crypto users and DeFi enthusiasts to manage their assets securely and efficiently. With a clean, intuitive UI and real-time blockchain data fetched via Blockscout APIs, the dashboard reduces friction, enhances wallet security, and empowers users to interact seamlessly with multiple chains and decentralized applications—all without the need for complex setups or multiple tools. Built with React.js and Ethers.js, Cross-Chain Control Center combines critical blockchain management functions into one accessible platform for both users and developers.
How It’s Made:
This project is built primarily with React.js for the frontend, allowing us to create a clean, interactive, and responsive user interface. Ethers.js is used to handle all blockchain interactions, including connecting to wallets via MetaMask, fetching balances, and sending transactions to revoke token approvals. For real-time blockchain data such as token approvals, we integrate Blockscout APIs, which provide access to explorer data across multiple EVM-compatible chains like Ethereum, Base, Optimism, and Gnosis.
The frontend and blockchain logic are tightly integrated: when a user connects their wallet, the app fetches the account balance and approvals dynamically, updating the UI in real-time. The Swapscout iframe is embedded to allow cross-chain token swaps directly from the dashboard, providing a seamless experience without leaving the app.
To handle cross-chain data fetching smoothly and avoid CORS issues, we optionally use a lightweight Node.js + Express backend to proxy API requests. This allows the app to aggregate approvals and balances across multiple chains efficiently. CSS is used to style the dashboard, keeping it minimal, intuitive, and user-friendly.
A notable “hacky” solution is the integration of multiple Scout Apps (Swapscout and RevokeScout) into a single dashboard. Instead of building complex cross-chain logic from scratch, we leverage these existing tools and combine them into one interface. This approach reduces development time while still delivering a powerful multi-chain management experience.
By piecing together React, Ethers.js, Blockscout APIs, Swapscout/RevokeScout, and optional Node.js backend, we created a functional, multi-chain dashboard that is both secure and easy for users to interact with, even without prior blockchain experience.

