Coins can really be any data, issued by anyone. So they can almost be thought of as contracts in some cases, assertions in another. When the video of my talk i

Coins can really be any data, issued by anyone. So they can almost be thought of as contracts in some cases, assertions in another. When the video of my talk is up you'll see that comes up in the Q/A. Part of the reason I'm being late-binding about the technical implementation is because I know I haven't come up with anything exactly new. I've been working a long time to solve the database sync problem, and now that we shipped, I'm thinking about what we can build on top of it. Which particular key scheme we use is of secondary importance, the important thing for me is exposing crypto primitives as part of a distributed database.