Yield and staking opportunities pay recurring returns for supplying capital to DeFi protocols — lending markets, liquidity pools, liquid staking derivatives, restaking platforms, and yield aggregators. Unlike trading rewards or airdrops, yield is ongoing: deposit capital, earn APY, withdraw when you choose. The trade-off is that your capital is at risk from smart-contract exploits, impermanent loss (for LP positions), and APY compression as more capital enters the protocol. CRR evaluates yield opportunities on sustainability-adjusted APY: raw APY deflated by token emission decay, historical drawdown in similar protocols, audit quality of the underlying contracts, and TVL depth as a proxy for liquidity risk. A 200% APY in a newly launched protocol is worth far less in expectation than a 12% APY in an audited, $500M TVL protocol with 18 months of payout history. Common risks in this category: smart-contract exploits are the primary tail risk (every major DeFi exploit in the past three years has affected protocols that were audited); impermanent loss from LP positions in volatile pairs; "hidden yield" compression when incentive tokens depreciate faster than the APY they represent; and re-hypothecation risk in restaking platforms where your staked assets secure multiple protocols simultaneously. Sub-types: liquid staking (ETH, SOL, BNB → staking derivative token), lending markets (supply stablecoins or blue-chips, earn utilization-based APY), concentrated liquidity LP (high APY, active management required), yield aggregators (auto-compound across multiple protocols), and restaking/AVS participation (highest yield, highest smart-contract surface area). Stablecoin lending has the best risk-adjusted yield for capital-preserving investors. Every yield listing on CRR includes the audit status, TVL, current APY, and a link to the primary source for APY verification.