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Track Bitcoin, Bitcoin Cash & Ethereum addresses. Real-time balance monitoring with notifications. Free, private, no account needed.

Blockchain is a browser extension that monitors cryptocurrency addresses across Bitcoin, Bitcoin Cash, and Ethereum in real-time. Add any wallet address to the extension and receive instant balance updates whenever the address balance changes. The extension sends notifications to alert you immediately when transactions occur, enabling you to track your crypto assets without constantly checking blockchain explorers. Simply enter a wallet address and the extension begins monitoring it automatically. Results display current balances in a clear, organized interface that updates as new transactions confirm. The extension is completely free to use and requires no account creation or registration. All monitoring happens privately on your browser without sharing address data with external services. Blockchain works seamlessly with modern versions of Google Chrome. WHAT YOU GET Monitor up to multiple cryptocurrency addresses simultaneously. The extension supports three major cryptocurrencies: Bitcoin, Bitcoin Cash, and Ethereum. Each address is monitored independently with real-time balance tracking and instant notifications when balances change. You can add and remove addresses at any time, giving you complete control over what you monitor. No subscriptions, no hidden fees, no account requirements—monitoring is completely free. HOW IT WORKS Install the extension, add your wallet addresses, and set notification preferences. The extension checks your addresses at regular intervals and sends you notifications whenever activity is detected. View all your tracked addresses and their current balances in the extension popup. Information is sourced directly from the blockchain and displayed instantly as updates occur.