Built an automated whale alert system that monitors the Bitcoin blockchain for large transactions (50+ BTC).

Today it caught:

  • 1,045 BTC ($74.5M) — single transaction
  • 186 BTC ($13.3M) — from Binance Hot Wallet
  • 112 BTC ($8.1M) — unknown wallets
  • Plus several 50-100 BTC movements

It auto-posts to Nostr relays in real-time and runs 24/7.

Dashboard: http://5.78.129.127/whales/ Fee estimator: http://5.78.129.127/bitcoin-fees

Free, no accounts, no paywalls. Built with Node.js + mempool.space API.

⚡ Lightning tips: devtoolkit@coinos.io