I know this is useful for crypto, but I think think I'm actually more interested in what new modes of remote code running on untrusted platforms this enables.
This scheme in particular is not useful for cryptocurrencies; we already knew how to make efficient zkSNARKs with perfect zero-knowledge before this result. This paper is a beautiful work of theory.
Author here - thank you for the compliment! Always happy to answer any questions (the docs are admittedly quite sparse) and hear about what people like/dislike about the library!
Python's Deal library provides contracts and a small portable formal proofs area of the codebase.
Additionally, Deal integrates with CrossHair which does concolic execution of the tests and functions annotated with contracts. It's integrated with Z3, and most of the Python primitives are covered.
It just works surprisingly well for incrementally building up provable code properties.