Ribbon Finance (now known as Aevo) is an Ethereum Layer-2 app chain rollup. It is built using the OP Stack and functions as an order-book-based decentralized exchange. The Aevo Rollup is operated in collaboration with Conduit, a Rollup-As-A-Service (RaaS) provider. Transactions on Aevo are ordered by a sequencer (managed by Conduit), then batched and posted onto Ethereum every hour. Aevo Rollup has a dispute period of two hours, where any challenged transactions can be confirmed or denied. After the 2-hour dispute period, transactions from the Aevo Rollup are confirmed on Ethereum. Users can deposit various crypto assets onto the Aevo Rollup from Ethereum (USDC, USDT, ETH, WBTC), Optimism (USDC, ETH), or Arbitrum (USDC, ETH). There are no gas fees on the Aevo Rollup.