Track BTC Whale

WHAT IT DOES

This tool tracks Bitcoin whale wallet addresses for balance changes and transaction activity. You provide a BTC address, and the tool fetches balance data from the Blockchain.com public API and monitors for incoming transactions via the unspent outputs endpoint. When the whale's balance changes or a new transaction is detected, the tool logs the activity and displays a visual alert. All tracking configurations are stored in-memory — no data is persisted across page reloads.

HOW TO USE

Connect your MetaMask wallet using the Connect button (required for the tool's sandbox environment). Enter the Bitcoin address you want to track, give it a name/label, and choose a check interval (10-600 seconds). Click "Track Whale" to start monitoring. Active tracked whales appear in the list with their current BTC balance. When the whale's balance changes or a new transaction is received, the activity appears in the BTC Whale Activity log with a timestamp. Click any transaction hash to view it on Blockchain.info. Use "Untrack" to stop monitoring a whale or "Clear All" to remove all tracked whales and activity history.

TECHNICAL MECHANISM

This tool does not use the EVM blockchain — it uses the Blockchain.com public API endpoints. For each tracked whale, it creates a JavaScript interval that runs at the user-specified frequency. On each interval tick, it fetches the whale's current BTC balance using the /q/addressbalance endpoint. It compares the new balance against the previously stored balance and logs any change above 0.0001 BTC. It also fetches unspent transaction outputs using the /unspent endpoint, which reveals new incoming transactions. Each unspent output is tracked using a Set of transaction hash + output index keys to avoid duplicate logging. New transactions with values above 0.1 BTC trigger a warning notification. All tracking configurations and state are stored in-memory variables — no data is persisted to disk.

WHAT IT CANNOT SEE

This tool cannot persist tracking across page reloads because it runs in an opaque-origin sandboxed frame with no storage access. It cannot send push notifications or emails without external services. It cannot detect activity that occurred before the whale was added to tracking. It cannot monitor wallets other than those specified. It cannot detect pending transactions — only confirmed balance changes and unspent outputs. It cannot detect token or NFT activity (BTC only). It cannot detect activity if the Blockchain.com API is unavailable or rate-limited. It cannot verify that the tracked address is actually a "whale" (large holder). It cannot detect outgoing transactions directly — only incoming transactions via unspent outputs and balance changes. It cannot track activity across multiple networks simultaneously.

PLEASE NOTE

This tool works with Bitcoin addresses — it does not require an EVM connection to function. The Connect button is required because the tool runs in BotSurf's sandboxed environment. The Blockchain.com API is rate-limited — frequent requests may be throttled. The tool uses public APIs and does not require an API key. Tracking is in-memory only and will be lost when the page is refreshed or closed. The tool does not store or transmit any data — all processing occurs in your browser. This tool is provided as a lightweight BTC whale tracking utility and should not be used as a critical financial monitoring system.