🤔 Curious about your token balances on @ZKsync ? Let's use Foundry's cast tool to check balances directly from the command line! Quick, efficient, and no GUI needed. 🧵👇

Step 1: Use a Rich Wallet

When you run `era_test_node fork mainnet` it provides you with rich wallets preloaded with ETH on the ZKsync mainnet fork. Let's use one of these for testing!

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Step 2: Add Rich Wallet to .env

Update your .env file with the rich wallet's address and private key. This way, you have funds to play with on your local fork. 
Remember, never use real private keys for testing! 🔑

Step 3: Load the Environment Variables

In your terminal, load the variables (you’ll need to do this anytime changes are made to your .env) and verify they are set. You should see your rich wallet's address and private key. ✅

Step 4: Check ETH Balance

Now, check your ETH balance. You'll see your balance in wei. To convert to ETH, divide by 1e18. ➗ You can use something like https://eth-converter.com as well

Step 5: Check WETH Balance

Use cast call to check your WETH balance, which should be 0… for now 😏

Step 6: Explore Other Contract Calls

cast call isn't limited to balances. You can read any public data from contracts. For example, get the total supply of WETH. Knowledge is power! 🦾

You can verify on the explorer:

Step 6: Explore Other Contract Calls

cast call isn't limited to balances. You can read any public data from contracts. For example, get the total supply of WETH. Knowledge is power! 🦾

You can verify on the explorer: https://era.zksync.network/address/0x5AEa5775959fBC2557Cc8789bC1bf90A239D9a91#readProxyContract

With cast, you have the power to query the blockchain at your fingertips! Next, we'll learn how to get WETH on our local fork. Stay tuned! ⚡