Cryptopedia - Hashflow

### What Is Hashflow (HFT)? [Hashflow](https://hashflow.com/) Hashflow Exchange OS (or xOS for short) is an engine that can turn any exchange into what we call a provable exchange. We believe that provable exchanges are the endgame for crypto trading — they retain the seamless UX and performance of a central limit order book (CLOB), which forms the backbone of every centralized exchange, while augmenting them with the new provable property. Hashflow's RFQ DEX solution fetches quotes from professional market makers who are responsible for managing liquidity. Market makers are required to cryptographically sign quotes that remain unchanged for the duration of the trade, allowing for guaranteed pricing without slippage.  Hashflow’s DEX Aggregator, Aggregator+, incorporates an intent-based Smart Order Routing (SOR) architecture that finds the most optimal path for users across liquidity sources and fills every trade of any size with the best price. These liquidity sources include PMMs (Professional Market Makers) and AMMs (Automated Market Makers).