The third approach to building Valhello will be by using Parity's Substrate, a framework for building custom blockchains with custom logic.

The second approach to building Valhello: add some plasma. Plasma chains are child chains living between "clients", but periodically being synced to the main chain which spawned them. We'll use a popular approach developed by one of the leaders in the field.

The first approach to build Valhello will be with state channels. How will the state channel approach help Valhello grow? What are State channels and how do they work? Are they a viable scaling solution? Let's see.