SoK: A Consensus Taxonomy in the Blockchain Era.
Juan A. Garay, Aggelos Kiayias · IACR Cryptology ePrint Archive · 2018
Consensus is arguably one of the most fundamental problems in distributed computing, playing also an important role in the area of cryptographic protocols as the enabler of a secure broadcast functionality. While the problem has a long and rich history and has been analyzed from many different perspectives, recently, with the advent of blockchain protocols like Bitcoin, it has experienced renewed interest from a much wider community of researchers and has seen its application expand to various novel settings.