QuickNode Hello World Overview Make your first blockchain queries: get block number, check ETH balance, read a smart contract. Prerequisites - Completed with endpoint URL Instructions Step 1: Get Block Number Step 2: Check ETH Balance Step 3: Read Smart Contract (ERC-20 Token) Step 4: Get Transaction Receipt Output - Block number retrieved - ETH balance checked - ERC-20 contract read - Transaction receipt fetched Error Handling | Error | Cause | Solution | |-------|-------|----------| | receipt | TX pending or invalid hash | Wait for confirmation or verify hash | | | Wrong ABI or address | Ve…