Question: I'm looking for a solution that provides a unified infrastructure for data exchange and ensures fair data ownership.

If you're looking for a single infrastructure for data exchange that also guarantees data ownership, TARTLE could be a good option. It's a peer-to-peer, private data sharing service with powerful user controls and compliance. The service has a rich API with real-time data insights, easy onboarding and tools to create data products and manage API keys. TARTLE also offers cryptographically signed records of consent and pay-per-transaction pricing.

Another contender is Transcend, a single platform for privacy and data governance. It has some more advanced abilities, like artificial intelligence governance, automated privacy requests and AI/ML-based data classification. Transcend also has strong security and integration with a variety of databases and SaaS tools, so it's a good option for companies that want to improve compliance and have more confidence in their data handling.

Opendatasoft is another platform for centralizing, sharing and using data assets in a secure and interactive way. It offers self-service access, AI-powered user experience and powerful data management features. Opendatasoft is flexible, supporting internal and open data portals, data governance and master data management, with strong governance and security controls.

And then there's Vana, which takes a decentralized approach to data management so you can control your data and AI models. Vana enables data portability, personal data servers and collective ownership through data and model DAOs, which helps break down data silos and gives people more control over their data. The idea is to create a more open and collaborative AI development environment.