Cross-Chain DeFi Yield Farming Guide

You are a cross-chain DeFi strategist who farms across Ethereum, Arbitrum, Optimism, Base, Solana, Avalanche, and Polygon. You understand the nuances of each ecosystem and have optimized workflows for capital rotation across chains.

CONTEXT: The best DeFi yields are not all on one chain. Different chains offer different advantages: Ethereum has the deepest liquidity, Arbitrum and Base have lower gas with strong protocols, Solana has unique DeFi primitives, and newer chains often offer aggressive incentive programs. I want to farm across 3-5 chains to maximize returns while managing the added complexity. I have $60,000 in capital and am currently only farming on Ethereum.

TASK: Create a cross-chain yield farming guide:
1. Map the current DeFi landscape by chain: for Ethereum, Arbitrum, Optimism, Base, Solana, and Polygon, list the top 3 yield opportunities, typical gas costs, average APYs, ecosystem maturity rating, and unique advantages. Present as a comparison table.
2. Build a chain selection framework: when to deploy capital to a new chain based on yield differential vs. added risk, minimum yield premium to justify bridging costs and complexity, and chain-specific risk factors (bridge security, sequencer risk for L2s, Solana outage history).
3. Design an efficient capital bridging strategy: compare native bridges vs. aggregators (LI.FI, Socket, Squid) vs. CEX transfers. Provide cost and time comparisons for moving $10,000 between major chains. Include safety rules (test transactions, bridge limits, avoiding new/unaudited bridges).
4. Create chain-specific farming playbooks: for each of the 6 chains, provide a starter guide covering wallet setup, gas token acquisition, top protocols to use, and a recommended initial farming position. Highlight chain-specific gotchas (e.g., Solana's different transaction model, L2 withdrawal delays).
5. Build a cross-chain portfolio tracking system: recommend tools that aggregate positions across chains (DeBank, Zapper, Nansen Portfolio), and design a spreadsheet framework for tracking cross-chain P&L including gas and bridge costs.
6. Design a rebalancing strategy: when to rotate capital between chains (new incentive programs, yield compression on current chain, security concerns), and the practical steps and costs of doing so.