Delta Exchange Crypto Screener
In-depth technical architecture, data flow, and implementation details
View Live DemoSystem Architecture
A modular, high-performance stack designed for real-time signal processing
Frontend
- Vanilla JavaScript
- WebSocket Client
- Responsive UI
- Real-time Updates
Backend
- Python 3.11 + FastAPI
- Uvicorn ASGI
- AsyncIO Concurrency
- Pandas/NumPy
Data Layer
- Delta Exchange API
- 600-bar Window
- JSON File Storage
- State Persistence
Notifications
- Telegram Bot API
- PIN-based Linking
- Activity Filtering
- Instant Delivery
Infrastructure
- Docker Container
- Nginx + SSL/TLS
- GitHub Actions CI
- Auto Certificates
Processing
- 9/20 EMA Engine
- Outlier Detection
- Multi-TF Analysis
- Signal Validation
How Data Flows
From market data ingestion to mobile alert delivery
Delta API
OHLCV Data · 5 Timeframes
EMA Engine
9/20 Calculation · Outlier Filter
Crossover Detection
Compare EMAs · Signal Logic
Broadcast
WebSocket Push · UI Update
Alert
Telegram Notification
Key Features
Purpose-built functionality for systematic crossover detection
Multi-Timeframe Screening
1m, 15m, 1h, 4h, and 1d timeframes monitored simultaneously for each symbol
Real-Time WebSocket
Signal changes broadcast instantly to all connected clients without refresh
Telegram Integration
Mobile alerts with symbol, timeframe, direction, and IST timestamp
Personal Watchlists
Each user session maintains an independent, customizable watchlist
Signal Freshness
"Bars Since" counter shows candles elapsed since last crossover
Data Quality Filter
MAD-based outlier detection removes suspicious candles
System Specifications
Operational characteristics and quality measures
This system is a signal detection and alert platform. It does not execute trades. The following describes operational performance characteristics.
Data Quality
Reliability
Sessions
Historical crossover data is available via the /historical-crossovers endpoint for custom backtesting analysis.
Outcomes & Impact
Measurable improvements in signal detection workflow
Instant Detection
Crossovers detected within seconds of candle close
Reduced Load
Automated scanning eliminates chart switching
Consistent Logic
Same 9/20 calculation applied systematically
Self-Hosted
No subscriptions or third-party dependencies
Ideal Users
Designed for traders who value systematic signal detection
Interested in a Similar System?
Custom signal detection systems can be built for different indicators, asset classes, or alert mechanisms.