This is cool and is a perfect case for IPFS for public datasets. I've not heard of it before, though, and I think naming / branding is something that makes finding these things / building momentum more difficult.

For example, someone else mentioned engima.com. I would have no idea that is related to data sources / sets unless I knew what it was.

Certainly wish you the best of luck though and will keep an eye on Qri! Cool project!