# Cosmos SDK Tutorials
The real deal, full-length tutorial in which you will build a fully functional naming service on a blockchain. This tutorial does not use the
starter package, rather you will be configuring and composing a full application yourself.
The nameservice tutorial also has translations and a slide deck.
A scavenger hunt of sorts! Users post questions with hashed answers and bounties for whoever can solve them using a commit-reveal scheme that prevents front-running.
The goal of this chain is to provide a blueprint for your own application specific blockchain that interacts with other EVM based networks like Ethereum and xDai.