{"id":392,"date":"2024-03-26T08:42:44","date_gmt":"2024-03-26T08:42:44","guid":{"rendered":"https:\/\/nownodes.io\/blog\/?p=392"},"modified":"2024-03-28T14:17:30","modified_gmt":"2024-03-28T14:17:30","slug":"how-to-retrieve-the-balance-of-a-bep-20-token","status":"publish","type":"post","link":"https:\/\/nownodes.io\/blog\/how-to-retrieve-the-balance-of-a-bep-20-token\/","title":{"rendered":"How to Retrieve the Balance of a BEP-20 Token on the Binance Smart Chain BSC Network?"},"content":{"rendered":"\n
\n
Access BSC Network<\/a><\/div>\n<\/div>\n\n\n\n

Despite lots of crazy things happening in the world of Web3, such as restrictions on Binance <\/a>in some countries, its popularity is still growing rapidly, grabbing the attention of both developers and users alike. Binance Smart Chain (BSC) is a blockchain platform that enables the creation and execution of smart contracts and decentralized applications (dApps). Within the BSC network, BEP-20 tokens play a crucial role in facilitating transactions and interactions. In this guide, we will delve into the details of retrieving the balance of a BEP-20 token on the Binance Smart Chain network, providing you with a comprehensive understanding of the process.<\/p>\n\n\n\n

Table of Contents<\/div>
<\/span><\/span><\/span><\/span><\/div><\/div>
<\/div>
    <\/ol><\/div><\/div><\/div>\n\n\n

    What is BEP-20? <\/strong><\/h2>\n\n\n

    BEP-20 is a token standard on the Binance Smart Chain network, similar to the popular ERC-20 standard on the Ethereum network. This standard defines a set of rules and functions that all BEP-20 tokens must adhere to, ensuring compatibility and interoperability between tokens and dApps on the BSC network.<\/p>\n\n\n\n

    The BEP-20 standard offers several advantages. Firstly, it allows for seamless integration of BEP-20 tokens into existing decentralized exchanges (DEXs), wallets, and other applications built on the BSC network. This compatibility enhances liquidity and accessibility for BEP-20 token holders. Additionally, the standard provides a uniform interface for interacting with BEP-20 tokens, making it easier for developers to build decentralized applications that can handle multiple tokens simultaneously.<\/p>\n\n\n

    Exploring the BEP-20 Contract Address<\/h2>\n\n\n

    The process of retrieving the balance of a BEP-20 token on the Binance Smart Chain network involves a few key steps.<\/p>\n\n\n\n

    The first step in retrieving the balance of a BEP-20 token is to identify the contract address of the token. The contract address is a unique identifier that represents the smart contract governing the token’s behavior and functionality. You can typically find the contract address on the BSCScan website<\/a> or through the token’s official documentation.<\/p>\n\n\n\n

    Once you have figured out the contract address, you can use it to interact with the token’s smart contract on the BSC network. The contract address serves as a reference point for retrieving token balances, executing transactions, and performing other operations related to the token.<\/p>\n\n\n

    Accessing the BSC RPC RPC Full Node<\/h2>\n\n\n

    To retrieve the balance of a BEP-20 token on the Binance Smart Chain network, you can use some method related to the BSC network. It also involves connecting to the BSC network using an RPC (Remote Procedure Call) node. An RPC node acts as a bridge between your application and the BSC network, allowing you to interact with smart contracts and retrieve token balances.<\/p>\n\n\n\n

    To retrieve a token balance using BSC methods, you need to send a specific API call to the RPC node, providing the contract address and the wallet address associated with the balance you want to retrieve. The RPC node will process the request and return the token balance associated with the provided wallet address.

    Here we will interact with the BSC RPC node by connecting to it via NOWNodes: <\/p>\n\n\n\n

      \n
    1. First, you\u2019ll need to create<\/a> a profile on the NOWNodes website (https:\/\/nownodes.io\/<\/a>). Choose a tariff plan and blockchains you want to access. Notice that the START<\/strong> plan is free and allows you to pick up only 5 blockchains, whereas other paid subscription plans<\/a> let you access any out of 100 blockchains available (including BSC mainnet endpoints) through one API key. <\/li>\n\n\n\n
    2. After registration, you have to generate an API key. This key is required to access BSC RPC nodes. Always keep your API key secure and never expose it in client-side code to ensure your usage remains secure and within the platform\u2019s guidelines.<\/li>\n\n\n\n
    3. NOWNodes<\/a> will provide you with the BSC RPC endpoint for accessing the BSC mainnet<\/a> network. NOWNodes offers documentation<\/a> and support that can guide you through the functionalities and API calls you can make to the BSC RPC node.<\/li>\n<\/ol>\n\n\n\n

      The BSC RPC endpoint looks like `https:\/\/bsc.nownodes.io`. You\u2019ll append your API key to this BSC RPC URL like so: `https:\/\/bsc.nownodes.io\/your_api_key`, or insert it into the request header. You can test the connection directly from your web browser by pasting the BSC endpoint with the API key in Postman. <\/p>\n\n\n\n

      Once you have the API key and the BSC RPC endpoint, you can plug these into your code to access BSC data. Whether you are using the Web3.js<\/a> library, Ethers.js<\/a> library, or direct HTTP calls, you\u2019ll specify this BSC RPC endpoint for connection. <\/p>\n\n\n

      Retrieving the BEP-20 balance<\/strong><\/h2>\n\n\n

      There are a few different methods of retrieving the BEP-20 balance, including: <\/p>\n\n\n\n

        \n
      1. Using Web3.js<\/strong> library methods in the Node.js environment<\/li>\n\n\n\n
      2. Making a direct JSON RPC API<\/strong> Calls to the BSC<\/strong> node<\/li>\n\n\n\n
      3. Using blockchain SDKs<\/strong> compatible with BSC<\/li>\n<\/ol>\n\n\n\n

        In this article, we are going to explore the first two options. Moreover, are not going to consider the user-friendly ways of checking BEP-20 tokens balances such as using BSC block explorer and other applications, as we are all developers here looking forward to making a brand new solution for users to do it! <\/p>\n\n\n\n

        So, let\u2019s start with a bit more sophisticated way of checking balance using Web3.js<\/a>.<\/p>\n\n\n

        <\/em>Using Web3.js in a Node.js Environment<\/em><\/strong><\/h3>\n\n\n

        This option is ideal for backend applications that need to interact with the blockchain, such as wallets, DApps, or financial analysis tools.<\/p>\n\n\n

        Prerequisites<\/h4>\n\n\n