Introduction
In this tutorial, you will learn how to build a permissioned network with Substrate by using node-authorization pallet. This tutorial should take you about 1 hour to complete.
You are probably already familiar with public or permissionless blockchain, where everyone is free to join the network by running a node. In a permissioned network, only authorized nodes are allowed to perform specific activities, like validate blocks and propagate transactions. Some examples of where permissioned blockchains may be desired:
- Private (or consortium) networks
- Highly regulated data environments (healthcare, B2B ledgers, etc.)
- Testing pre-public networks at scale
Before you start, we expect that:
- You have completed the Build a PoE Decentralized Application Tutorial.
- You are conceptually familiar with
P2P Networking in Substrate.
- We suggest to complete the Private Network Tutorial to get experience with this first (not required).
If you run into an issue on this tutorial, we are here to help! You can ask a question on Stack Overflow and use the substrate tag or contact us on
Element.
What you will be doing
- Modify the Node Template project to add node-authorization pallet.
- Launch multiple nodes and authorize new nodes to join the network by calling the dispatchable calls provided by node-authorization pallet.
Sound fun? Great! Let's begin!