This is a P2P Dapp for fiat to/from crypto similar to what Centralized exchanges offer to their client (binance P2P,bybit P2P). The difference is that it's based on a smart contract. For a visual representation of how this works, please refer to this whiteboard: https://sharing.clickup.com/9010018633/wb/h/8cgkya9-921/bbec575154d4c5c

Challenges of such an app:

-Making sure the crypto seller doesn't run with the crypto as soon as he receives the fiat

-Making sure the crypto buyer doesn't lie about sending the fiat

-Limiting such dishonnest behavior

The smart contract is not yet complete. It needs:

-Moderator logic

-Unit tests for moderator logic