http://www.coindesk.com/blockcypher-update-gyft-litecoin/In rebuilding the Bitcoin client, they generalized it across multiple digital coins and block chains to isolate the different roles outlined in the original Satoshi white paper. Their architecture has modular and separated components which allows them to scale linearly, distribute their software onto multiple sites and support many use cases.
In addition to the Bitcoin, you can now support Litecoin using the exact same APIs. Generalizable to any block chain as well.
