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Check Wallet Balances Across 4 Chains with Zero Dependencies — chain_balance.py
零依赖查Solana、Ethereum、BSC、Polygon四链余额，单文件Python CLI，仅需钱包地址。
TL;DR: A single-file Python CLI tool that checks native and token balances across Solana, Ethereum, BSC, and Polygon using public RPC endpoints. No pi…