$ETH $ADA Average yields hover around 3%-4% annualised, slightly higher if nodes capture maximal extractable value (MEV) via MEV-Boost.PoS reduced ETH issuance roughly 90%, yet ETH recently flipped to marginally inflationary after the March 2025 Dencun fork pushed transactions to cheaper Layer-2s, lowering base-layer fee burns. Supply is now just above 120.4 million ETH.Cardano’s OuroborosProtocolCardano’s Ouroboros is the first PoS algorithm with formal security proofs. Time is sliced into five-day epochs, each subdivided into slots that slot leaders (chosen proportionally to stake) fill with transactions. Because stake pools can accept delegation without bonding periods, anyone can earn ADA in minutes using a mobile wallet; no 32-coin hurdle like ETH exists. Rewards adjust over time and currently sit around 1.7% – 2% on major exchanges, though independent pools sometimestop4%.SmartContractCapabilitiesEthereum set the standard for smart contracts with Turing-complete Solidity contracts that now secure ~$63 billion in total value locked (TVL). A rich toolbox including ERC-20 tokens, composable DeFi “money legos,” decentralized autonomous organisations and NFT standards has attracted developers despite high gas fees.Cardano followed later; the Alonzo hard fork (September 2021) introduced Plutus smart contracts written in Haskell-inspired PlutusCore and Marlowe, domain-specific languages for financial agreements. Uptake was slow, hampered by technology gaps, but 2024’s Aiken compiler and Hydra scaling heads lowered entry barriers. Cardano smart contracts run off-chain during the validation process. This design improves determinism and enhances security, but it also limits real-time (synchronous) interactions between decentralized applications, a deliberate trade-off in the platform’s architecture.In practice Ethereum still hosts the lion’s share of DeFi liquidity, yet Cardano’s ecosystem is growing, helped by recently launched stablecoins, on-chain order books like Minswap, and identity-driven dApps targeting African #writetoearn