custodial-wallet

Create EVM & Tron Wallet and Track Balance

This Node.js application tracks native cryptocurrency balances (such as ETH, BNB, MATIC, TRX) and specific token balances (ERC-20, BEP-20, TRC-20) for given wallet addresses on Ethereum, Binance Smart Chain (BSC), Polygon, and Tron networks.

Features

• Wallet Creation: Generate new wallet addresses for Ethereum-compatible (BSC, Polygon) and Tron networks.
• Native Balance Tracking: Track the native cryptocurrency balances (ETH, BNB, MATIC, TRX) of specific wallet addresses.
• Token Balance Tracking: Track balances of specific tokens (ERC-20, BEP-20, TRC-20) for specified wallet addresses.
• Automatic Payment Tracking: Automatically track incoming payments and token balances.

Technologies Used

• Node.js: Backend framework for running the server.
• Express.js: Web framework for handling HTTP requests.
• ethers.js: Library for interacting with Ethereum-compatible blockchains (BSC, Polygon).
• TronWeb: Library for interacting with the Tron blockchain.

Installation

1. Clone the repository:

   git clone https://github.com/yourusername/blockchain-balance-tracker.git
   cd blockchain-balance-tracker
   

2. Install dependencies:

   npm install
   

3. Start the server:

   node index.js
   

   The server will start running on http://localhost:3000.

API Endpoints

1. Create Wallet

• URL: /create-wallet
• Method: GET
• Description: Generates new wallet addresses for Ethereum-compatible networks (BSC, Polygon) and Tron network.

Example Response:

{
    "bsc": {
        "address": "0xYourBscOrPolygonAddress",
        "privateKey": "YourPrivateKey"
    },
    "polygon": {
        "address": "0xYourPolygonAddress",
        "privateKey": "YourPrivateKey"
    },
    "tron": {
        "address": "TYourTronAddress",
        "privateKey": "YourPrivateKey"
    }
}

2. Start Tracking

• URL: /start-tracking

• Method: GET

  • Query Parameters: address: The Ethereum/BSC/Polygon wallet address. tronAddress: The Tron wallet address. tokenAddress: The smart contract address of the token you want to track. tokenType: The type of token (ERC20, BEP20, TRC20).

  Description: Starts tracking native and token balances for the specified wallet addresses.

Example Request:

GET /start-tracking?address=0xYourBscOrPolygonAddress&tronAddress=YourTronAddress&tokenAddress=0xYourTokenAddress&tokenType=ERC20

Example Response:

{
    "message": "Started tracking payments and token balance for address 0xYourBscOrPolygonAddress",
    "balances": {
        "bsc": "0.1234",
        "polygon": "0.5678",
        "tron": "9.8765",
        "token": "1000.00"
    }
}

3. Check All Balances

• URL: /check-all-balances

• Method: GET

• Query Parameters:

  • address: The Ethereum/BSC/Polygon wallet address.
  • tronAddress: The Tron wallet address.
  • tokenAddress: The smart contract address of the token you want to track.
  • tokenType: The type of token (ERC20, BEP20, TRC20).

  Description: Manually checks and returns the current balances for native currencies and specified tokens.

Example Request:

GET /check-all-balances?address=0xYourBscOrPolygonAddress&tronAddress=YourTronAddress&tokenAddress=0xYourTokenAddress&tokenType=ERC20

Example Response:

{
    "message": "Balances for address 0xYourBscOrPolygonAddress",
    "balances": {
        "bsc": "0.1234",
        "polygon": "0.5678",
        "tron": "9.8765",
        "token": "1000.00"
    }
}

4. Tracking Payments

The server will automatically track and log new payments and token balance changes every minute.

• Polling Interval: Every 60 seconds.

How It Works

• Create Wallets: You can generate new wallet addresses for BSC, Polygon, and Tron using the /create-wallet endpoint.
• Start Tracking: Start tracking a wallet's native and token balances using the /start-tracking endpoint.
• Check Balances: Manually check all balances using the /check-all-balances endpoint.
  • ** Automatic Tracking:** The server checks for new payments and token balance changes every minute and logs any changes.

Limitations

• The application currently tracks only one token at a time per request.
• For tracking multiple tokens automatically, integration with an external service like Etherscan or BscScan would be required to fetch all tokens associated with a wallet.

Future Enhancements

• Automatic tracking of all tokens held by a wallet address.
• Integration with external APIs to fetch and display all tokens associated with a wallet.
• Enhanced error handling and logging.

Author

@nadcablabs