Crypto Watching is a real-time Bitcoin price monitoring desktop application built with C# and Windows Forms. Designed for personal use, this dashboard visualizes live BTC price movements using data fetched from the (unofficial) Robinhood Crypto API. The app features a modern UI, a price/time chart, and a realistic Bitcoin background, giving you a quick and engaging way to watch the crypto market.

Key features:

• Live BTC Price Updates: Fetches and displays live Bitcoin price (BTC-USD) from Robinhood’s crypto market endpoint.
• Interactive Chart: Plots BTC price over time with auto-scaling and interactive mouse-hover for precise value inspection.
• Modern UI: Large, readable display with real-time clock, current price, and a visually striking Bitcoin background.
• Secure API Access: Uses Ed25519 key signatures for secure communication with the Robinhood API (see Note below).
• Easy Exit: Cleanly closes with a single click.

Note:
This application uses an unofficial Robinhood API for personal or educational use only.
You must supply your own Robinhood API key and Ed25519 private key to access the crypto endpoints.
Handle all keys and credentials securely—never upload secrets to public repositories.

• Live BTC/Price Streaming: Updates every second using Robinhood’s /crypto/marketdata/best_bid_ask endpoint.
• Ed25519 Authentication: Secure API calls with BouncyCastle for message signing.
• Charting: Smooth, auto-scaling chart using Windows Forms built-in chart controls, with marker dot and price info on hover.
• Customizable UI: Transparent chart background overlays a high-res Bitcoin image for a polished look.
• Exit Button: Simple exit functionality for user convenience.

1. Clone this repository and open the solution in Visual Studio.
2. Provide your API keys and private key file by updating the keyPath, privateKeyFile, and robinhoodApiKey fields in Form1.cs.
3. Run the app—you’ll see the live Bitcoin price and chart update in real time.

This project is not affiliated with Robinhood Markets, Inc.
Use for learning, personal dashboards, or prototyping only.
Never share your keys or upload secrets to public code repositories.

MIT License. See LICENSE for details.