Hey OSS, thanks for share that, since months ago i was asking my self how to setup an explorer, and i even was thinking to code it my self, and now after reading about Blockcypher i see the light at end of the tunnel. I will wget that code and give it a try.
By the way, do you know if Blockcypher works for other coins or only for BTC?
I don't think so, the service itself works for Dogecoin, Litecoin, and Bitcoin so I'm going to assume the same thing goes for the source and even If not, you should be able to tweak it since both LTC and DOGE are forked from bitcoin.