PKCryptolisting monitors Upbit and Bithumb — Korea's top 2 crypto exchanges — and sends instant WebSocket alerts the moment a new listing, delisting, or maintenance notice is posted. Most traders find out too late. We detect announcements within 1 second and push them directly to your WebSocket client. - Real-time detection (avg. <1s) - Auto-categorized: listing, delisting, deposit/withdrawal, maintenance - Original notice URL included - 24/7 uptime - Free plan available