On the mainnet yes, on demo not, our demo is using only virtual SATs, demo will stay forever to train and learn how to use the platform. The beta mainnet with real payments will launch in a few weeks. Users can trade and also create their own markets and earn fees on that markets. Polymarket is controlling the markets and is creating the markets. Users can trade only, and offers can be taken down. There is no bitcoin to trade with on Polymarket. BAO markets is a protocol. Offers will be visible on all nostr clients, clients over time will allow to take trades inside the app. Markets will show up on the feed like any other message to be zapped yes/no. Once market resolves users get paid to their wallets automatically. What is interesting is ecash will be also allowed, cashu for private payments. Users by default are in the private mode. This means nobody can identify the creator of the market and traders. Everything is encrypted and distributed across relays. Your nostr ID decrypts your portfolio with current trades and markets.