zkLink Nova chain RPC Methods & API Documentation

eth_getBalance RPC Method

The eth_getBalance method returns the balance (in wei) of the specified account address at the latest block.

Parameters

• address - 20 bytes. The address of the account to retrieve the balance of.

• blockNumber or tag - The string "latest", "earliest", "pending", "safe" or "finalized", or an hexadecimal block number. On zkLink Nova you can not use "Safe" and "finalized". They are only availible on Ethereum and Arbitrum One chains. Read block parameter description in Ethereum documentation (opens in a new tab).

Returns

Balance - The chosen address’ balance in wei as an integer.

Request

POST https://<network>.chainnodes.org/YOUR-API-KEY

Example

curl https://zklink-nova-mainnet.chainnodes.org/YOUR-API-KEY \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_getBalance","params": ["0x95222290DD7278Aa3Ddd389Cc1E1d165CC4BAfe5", "latest"],"id":1}'

Body

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0x19451085df7bc276d"
}

Some use cases:

1. Wallet Balance Display: Wallet applications use eth_getBalance to display the current balance of a user's account.
2. Transaction Validation: Before sending a transaction, a user or a wallet can call eth_getBalance to check if the account has enough balance to cover the transaction cost. This can prevent failed transactions due to insufficient funds.
3. Account Monitoring: Services that monitor Ethereum accounts for various purposes (like auditing, alerting, or reporting) use eth_getBalance to track the balance of specific accounts over time.
4. DApp Interaction: Decentralized applications use eth_getBalance to check the balance of a user's account before performing actions that require a certain minimum balance.