What is marketdao?

This project is a clone of Polymarket, a website where people bet on the outcome of real world events. It lets users connect a Solana crypto wallet, called Solflare, sign in with it, and then trade on prediction markets where you buy YES or NO positions on whether something will happen. To make testing easy, users can add mock, meaning fake, US dollars to their account instead of using real money. The project is built as a monorepo, which means the frontend website and backend server live together in one repository but are managed as separate pieces using a tool called Turborepo, with Bun handling package installation and running scripts. The frontend is a React application built with Vite, styled with a dark mode design. The backend is an Express server written in TypeScript that runs on the Bun runtime and handles the logic for matching buy and sell orders. Data is stored in a PostgreSQL database accessed through Prisma, a tool that makes talking to the database easier from TypeScript code. Signing in with a Solana wallet is verified through Supabase. To run it locally, you need Bun installed, Docker Desktop running for the local database, and the Solflare browser extension. After installing dependencies and setting up the database schema, you seed it with sample prediction markets and start both the frontend and backend at once with a single command. For a real deployment, the README walks through hosting the database on a service like Supabase or Neon, the backend on Railway, Render, or Fly.io, and the frontend on Vercel or Netlify.