Crypto Portfolio Tracker

Crypto Portfolio Tracker is a free, open-source, cross-platform cryptocurrency portfolio tracker built as a .NET console application. It provides real-time tracking of Bitcoin and Ethereum wallet balances across multiple watch-only wallets: it fetches live price data from CoinGecko, uses BIP39 to derive your receiving addresses from a root public key (xpub/zpub), then queries balances from a randomly-picked Electrum server — without ever transmitting your extended public key to a third party.

Because it only needs an xpub/zpub (never a private key or seed phrase), it works as a non-custodial, watch-only balance tracker — it can see what your wallet holds but can never move funds. It runs anywhere the .NET runtime does: Windows, macOS, and Linux.

TO GET STARTED: rename CryptoTracker.ConsoleApp/RENAMEME appsettings.json to appsettings.json and put in your xpub/zpub and the tokens you want to track.

Features

• Retrieves and displays current cryptocurrency prices and market data.
• Privacy Focused: Randomly picks an Electrum server and fetches balances from individual addresses. Your xpubs are never shared.
• Tracks the value of Bitcoin and Ethereum wallets using extended public keys (xpubs & zpubs).
• Supports different wallet types (Segwit, Legacy, Bech32, etc.).
• Configurable to monitor a range of cryptocurrencies.
• Neatly formatted, auto-refreshing and easy-to-read output.

Output Example

The application displays data in a well-organized table format, showing details like cryptocurrency prices, market cap, and wallet balances in both BTC and USD.

Configuration

appsettings.json (in CryptoTracker.ConsoleApp/) allows you to set your CoinGecko API key and specify the cryptocurrencies and wallets you want to track.

CoinGecko API Key

• Optional: Get your API key here.
• Add your API key to the appsettings.json file.

Cryptocurrency Settings

• Add the symbols of the cryptocurrencies you want to track in the PricesToCheck setting.
• Full list of supported tokens: CoinGecko API

Wallet Settings

• Add your extended public keys (XPubKeys) to the XpubKeyPairs section.
• Specify the ScriptPubKeyType for each wallet (e.g., SegwitP2SH, Legacy, SegwitBech32).
• Track ERC-20 tokens (e.g. USDC, USDT) by adding Ethereum addresses under Ethereum:AddressesToMonitor.

Installation and Usage

1. Clone the repository: git clone https://github.com/DavidVeksler/Crypto-Portfolio-Tracker.git
2. Rename CryptoTracker.ConsoleApp/RENAMEME appsettings.json to appsettings.json and fill in your xpub/zpub keys, Ethereum addresses, and API key.
3. Build and run with the .NET SDK:

   dotnet build
   dotnet run --project CryptoTracker.ConsoleApp

Tech Stack

• Language/runtime: C# on .NET 8, runs as a cross-platform console app
• Bitcoin address derivation: NBitcoin (BIP39/BIP32 xpub/zpub → addresses)
• Ethereum: Nethereum
• Balance lookups: ElectrumXClient against public Electrum servers
• Price data: CoinGecko API
• Console UI: Alba.CsConsoleFormat

Dependencies

• .NET 8 SDK or runtime

License

This project is open-source and available under MIT License.