© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2022
I. BashirBlockchain Consensus https://doi.org/10.1007/978-1-4842-8179-6_7

7. Classical Consensus

Imran Bashir1  
(1)
London, UK
 

Consensus and replication protocols that appeared in the 1980s have made profound contributions in consensus protocol research. Early replication protocols like viewstamped replication provided deep insights into how fault-tolerant replication can be designed and implemented. Around the same time, Paxos was introduced, which offered a practical protocol with rigorous formal specification and analysis. In 1999, the first practical Byzantine fault–tolerant protocol was introduced. This chapter covers these classical protocols in detail, ...

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