Decentralized leveraged trading platform opyn aims to establish a non-custodial margin trading platform based on Ethereum, Compound, Uniswap, and DAI, allowing users to go long or short on ERC20 tokens. It also plans to integrate with other DeFi platforms so that opyn can aggregate liquidity from multiple decentralized exchanges and lending platforms, providing users with the best prices and lowest rates across the entire DeFi ecosystem.