HTTP is slow, switch to rpc

[donutloop]

Switch form HTTP too RPC to increase the performance of every request and you get a lot of additional features which HTTP don't have.

This project seems pretty interesting. I can offer you my help to speed up the development process.

contact me anytime ;)

[crisadamo]

Thanks for your suggestion @donutloop, as this project started as a mean to understand better blockchain, the easiest way to try this was to use HTTP with JSON. But you are right, this should use an RPC instead. I don't actually know what this could end up being but as an exercise, I'll add gRPC or gobs as an alternative.