It seems like every week there's a new decentralized data storage and exchange system. Off the top of my head, I can name IPFS, Patchwork/Secure Scuttlebutt, and plain old Bittorrent, and I know there are more.

After a while, it seems like every decentralized data storage system gets a Git wrapper.

What if we used Git as an abstraction layer over all of these systems, with something like Git Annex? For the use case of storing all the world's content, for example, we could have one master Git repository of all files ever. We would use Git Annex to keep track of where each file can be found across a variety of distributed data storage systems (by storing its web URL, IPFS hash, Bittorrent info hash, SHA256 hash, and whatever other content locators are required for future systems). When someone wants to actually get a file, they can retrieve it from their distributed system of choice (assuming that it is legal for them to do so in their jurisdiction, and that they have obtained any necessary licenses).

Has anyone ever done anything like that before? A decentralized master library, abstracted across content storage and distribution systems? Does it make sense to abstract across storage systems like that?