I've been reading this book:
A full review will have to wait, but the essence of the book is that markets run on information. Importantly, money is only one form of information, and as the use of other forms expand, the use of money will contract.
Where that data will come from in the future is the automated digital capture of things as they happen. But what about the past? That information is also very important, but contained in other forms like paper and analog magnetic tape. Public radio stations have started to experiment with how to transcribe this stuff into new forms.
(Nieman Lab is a fascinating website, by the way, if you are a journalism nerd).
This seems like a prime use for cryptocurrency like Steemit. So much of the content on here is slightly repurposed from other sources, and some of us spend a lot of time flagging plagiarized materials. Why not explicitly reward people for transcribing un-digitized stuff, word for word, to the public record? Or for tagging with appropriate metadata?