Introduction to parity

Parity is an Ethereum node written from the ground up for correctness/verifiability, modularization, low footprint, and high performance. It is written in Rust programming language, a hybrid imperative/OO/functional language with an emphasis on efficiency. It is professionally developed by Parity Technologies. At the time of writing this book, the latest version of parity is 1.7.0, and we will be using this version. We will learn as much as is required to build a consortium blockchain. To learn parity in depth, you can refer to the official documentation.

It has a lot more features than go-ethereum, such as web3 dapp browser, much more advanced account management, and so on. But what makes it special is that it supports Proof-of-Authority (PoA) along with PoW. Parity currently supports Aura and Tendermint PoA protocols. In the future, it may support some more PoA protocols. Currently, parity recommends the use of Aura instead of Tendermint as Tendermint is still under...