We now removed the need for Boost:chrono in all the libs, to avoid
accidentally linking to it again this change makes the apps link to
the actual specific libs instead of just all.
The recent introduction of helper methods on pubkey.h had the
side-effect of pulling in crypto libraries.
This splits the static methods into a separate namespace and file
to avoid such cross-module dependencies.
The very famous bitcore project presents an JSON based service which
presents blockchain data. This application aims to duplicate all the same
functionality but by using Flowee services instead.