Data exchanges as Digital Public Infrastructures drive data-driven economies by enhancing efficiency, enabling revenue streams, and facilitating data monetization. This work explores integrating crypto-based payments into platforms like IUDX and ADeX, offering benefits such as enhanced security, lower fees, and decentralized control. Key focus areas include crypto gateways, smart contracts, and wallet integration. The study highlights challenges like regulation and scalability while proposing a secure, efficient ecosystem to advance the data economy.