From Zero to Web3: Create Your First Smart Contract Today (1777704329) Why This Matters The blockchain space is growing fast, and developers who understand cross-chain tools have a massive advantage. This guide will get you from zero to a working DeFi monitoring tool in under 30 minutes. What You'll Build A real-time price monitor for ETH, BSC, and Polygon Automatic alerts for large transactions (> $100K) A simple dashboard to visualize cross-chain activity Exportable logs for further analysis Prerequisites Python 3.8+ Basic understanding of APIs A text editor Step 1: Setup pip install web3 requests pandas Enter fullscreen mode Exit fullscreen mode Step 2: Connect to Chains from web3 import Web3 chains = { " ethereum " : Web3 ( Web3 . HTTPProvider ( " https://eth.llamarpc.com " )), " bsc " : Web3 ( Web3 . HTTPProvider ( " https://bsc-dataseed.binance.org " )), " polygon " : Web3 ( Web3 . HTTPProvider ( " https://polygon-rpc.com " )), } for name , w3 in chains .…