🚀 Just shipped ArbSignal — real-time crypto arbitrage scanner Watches Binance, Bybit, Kraken, OKX, Coinbase via WebSocket. Telegram alerts when spreads hit your threshold (after fees). 30-day free trial: arb-signal.com Solo founder. Stack: Python/FastAPI + React + PostgreSQL on €4 Hetzner VPS. #buildinpublic #SaaS