Whale Alerts — Large On-Chain Transaction Monitor

Live alerts for large on-chain transfers. Custom thresholds; tab highlight optional. Not Whale Alert. Information only.

🐋 On-Chain Whale Alerts — Track Big Crypto Transactions in Real Time By the time a whale transfer hits Twitter, the move is already priced in. Someone just sent $50 million USDT to a centralized exchange. A dormant Bitcoin wallet from 2013 just woke up and moved 3,000 BTC. A known fund quietly accumulated 80,000 ETH over four hours. Every one of those events moved the market — and most traders found out about them an hour late, in a screenshot in someone's Telegram group. This extension closes that gap. It watches public blockchain APIs around the clock, detects on-chain transactions above the size threshold you set, and alerts you the moment something significant happens. No account. No API key. No backend collecting your activity. 🐋 What This Extension Does • 📡 Monitors large transactions across major blockchain networks in real time • 🎚️ Custom threshold per chain — set your own definition of "whale" • 🔔 Desktop notifications the moment a qualifying transaction lands on chain • 📋 Live whale feed in the side panel showing recent large transfers • 🏦 Detects exchange inflows and outflows — see when whales move funds to or from centralized exchanges • 🪙 Token watchlist — get alerts only for the assets you care about • 👤 Address watchlist — track specific wallets and get notified the moment they move funds • 📊 Filter by transaction type: transfers, mints, burns, exchange flows • 🔗 One-click jump to the relevant block explorer to inspect any transaction 🚀 Why On-Chain Whale Alerts 🆓 Completely Free — no subscription, no trial, no paywall behind core features 🪶 Lightweight — Manifest V3, side panel, runs in the background without slowing Chrome 🔐 Privacy-First — no account, no email, no wallet connection ever required 📡 Public Data Only — uses public blockchain APIs that anyone can query 🌍 Multi-Chain — major networks supported out of the box, more on the way 🎚️ Fully Customizable — set your own thresholds, watchlists, and notification cadence 🔁 Auto-Refresh — polls public blockchain endpoints in the background, no manual refresh needed 👁️ Transparent — extension contains no remote code; all logic ships in the package and updates only through Chrome Web Store releases 📡 How It Works Install the extension and pin the whale icon to your Chrome toolbar Open the side panel and pick the chains you want to monitor Set your minimum transaction size for each chain — start with $1M and tune from there (Optional) Add specific tokens or wallet addresses to your watchlist for targeted alerts Go back to work — the extension polls public blockchain APIs every 30–60 seconds in the background When a whale transaction matches your filter, you get a desktop notification and a new entry in your live feed 📊 Real Scenarios Where This Helps Catching exchange-inflow signals A wallet you've never seen before sends a large amount of crypto to a centralized exchange. That's often a precursor to a sell. The extension catches it within a minute and pushes a notification — long before the price reflects the move. Following dormant-wallet activations A wallet that hasn't moved in years suddenly transfers everything in a single transaction. These events historically correlate with major narrative shifts. You see it as it happens, not after the news cycle catches up. Tracking accumulation A fund or family office quietly accumulates a token in repeated chunks over a week. Your watchlist catches every one of their wallets and shows you the cumulative inflow before the broader market notices. Following stablecoin minting A massive stablecoin mint just landed. Historically that's followed by buying pressure on the wider market. Your mint-alert fires within 60 seconds. Catching exits, not just entries Knowing when a whale exits is as important as knowing when they enter. A wallet you respect sends their entire position to a DEX-router contract — that's an exit signal worth your attention. Daily morning scan You open the side panel, see overnight whale activity at a glance, and get a one-screen summary of capital flow. Plan your day from that picture. 🌐 Data Sources The extension queries public, read-only blockchain data APIs and explorers. All endpoints are public — exactly what you would see if you opened these explorers in your browser. The full list of supported networks and endpoints is configurable in the extension's settings panel and updated through Chrome Web Store releases as new chains are added. 🎚️ Built for Real Configuration • Per-chain thresholds — what counts as a "whale" varies by network and asset. Set each one independently. • Per-token thresholds — track different assets with different alert sizes in the same feed. • Notification cadence — instant, hourly digest, or quiet mode. Choose what fits your day. • Watchlist — paste up to 50 wallet addresses to monitor specifically. Optional aliases ("Cold Wallet", "Smart Trader 07") for clarity. 🐋 Who This Extension Is For • Crypto traders who want capital-flow signal without staring at block explorers all day • On-chain analysts and researchers tracking whale behavior across cycles • DeFi participants who need exchange-inflow warnings before liquidations cascade • OTC and market-making desks watching for accumulation and distribution patterns • Anyone who has ever learned about a major on-chain transfer hours after it landed 🚫 What This Extension Does NOT Do • It does not connect to your wallet or any wallet — there is no wallet functionality • It does not place trades, sign transactions, or interact with smart contracts • It does not access your accounts, your balances, or your browsing activity • It does not provide financial, investment, or trading advice • It does not collect, transmit, or sell any personal data • It does not contain any remote code; all JavaScript ships inside the extension package and updates only through Chrome Web Store version releases 🔐 Privacy & Trust • No account, no email, no phone number — install and use immediately • Your watchlist, thresholds, and feed cache stay on your device in chrome.storage.local • On-chain RPC calls go directly to public blockchain APIs; we don't track which addresses you query • The extension contains no analytics SDK, no telemetry, and no advertising libraries ⚠️ Important Disclaimer This is an independent on-chain monitoring tool and is not made by, affiliated with, endorsed by, or sponsored by any blockchain network, exchange, or data provider. All trademarks mentioned belong to their respective owners and are used descriptively only. This extension is an informational tool. On-chain transaction data is provided as-is from public blockchain sources. The extension does not provide financial, investment, or trading advice. You are responsible for your own trading decisions and the risk of any positions you take based on the information surfaced by this tool. 🐋 Install On-Chain Whale Alerts — your real-time signal for big on-chain transactions, free for Chrome.