Very little out there about it. Have to read through a lot of FOMC meeting notes and different things like that. Some writers out there touch upon it. Do a search on YouTube for Eurodollar and you will get some insight into it.
As for the exclusion, this was set up by the banks. Things such as LIBOR and Repo markets all are a part of this. Trilateral repo agreements are what is known; bilateral repo agreements are harder to uncover.
RE: Cryptocurrency: The Evolution Of Money