Lingfeng Wang

Mar 16, 2023 | mdpi.com | QingXiao Zheng |Lingfeng Wang |Jin He |Taiyong Li

2.1. Evolution of Consensus AlgorithmsIn decentralization, any node in a blockchain can submit a transaction to be stored in the system, so it is important that there are processes that can ensure that each node reaches a consensus to accept or reject the submitted transactions. These processes are essentially considered consensus algorithms. PoW is the first consensus protocol used in blockchain. It works with Bitcoin and Ethereum, among others.