The open RPC/API nodes are designed for services to use. We are using those for our own services, but others can also choose to use them as the IP's are public and we have NGNIX SSL domain routing for them. They are reachable under a public domain aswell. As we scale, this infrastructure will also scale so we can initiate load-balancers in front of an army of open nodes for everyone to use.

The other four types of nodes play a crucial part in designing a top secure and high available validator network. The validator name is SG-1.