Goldman Sachs has published an excellent paper, Crypto: A New Asset Class?, which provides a tremendous amount of detail about crypto currencies. (This is a direct link to the paper. This is a video that explains important details of the paper in about 20 minutes.)
XBRL-based digital financial reporting and crypto currencies are inextricably connected. If you look at my summary of financial report levels you will see that while Level 5 reports can work effectively; Level 6 and Level 7 is where the real value of XBRL-based digital financial reports is.