Recommended resources or tuts for Bitcoin/Bitcoin Exchange clone using Ruby/Rails? Are there any reputable resources or tuts for re-building a Bitcoin/Bitcoin Exchange clone using Ruby/Rails (e.g. Michael Hartl tutorial)? I would like to experiment and learn more about blockchain transactions.  Thank you!
The biggest Ruby-related Bitcoin project is Toshi by Coinbase.

You can obviously read through the source code. And read through the documentation in the github repo.

There's also bitcoin-ruby which should get you started on how to program bitcoin stuff using Ruby.