Ramesh Karanam 5 Questions 2 Answers 0 Best Answers 51 Points View Profile 0 Ramesh Karanam BlockchainLearner Asked: January 30, 2019 What is Practical Byzantine Fault Tolerance algorithm (PBFT) and how it is useful in Blockchain scenario? 0 Rate this post This is one of the methods for finding consensus in Blockchain. Explanation required to understand how exactly PBFT works. ShareTweetShare0 Shares blockchain Share Facebook 2 Answers Voted Oldest Recent Ashish Jaiswal 32 Questions 69 Answers 1 Best Answers 795 Points View Profile Ashish Jaiswal BlockchainProfessional Added an answer on January 30, 2019 at 7:29 am This answer was edited. Byzantine Fault Tolerance is the characteristic which defines a system that tolerates the class of failures that belong to the Byzantine Generals’ Problem. Byzantine Failure is the most difficult class of failure modes. It implies no restrictions, and makes no assumptions about the kind of behavior a node can have (e.g. a node can generate any kind of arbitrary data while posing as an honest actor). Byzantine Faults are the most severe and difficult to deal with. Byzantine Fault Tolerance has been needed in airplane engine systems, nuclear power plants and pretty much any system whose actions depend on the results of a large amount of sensors. Even SpaceX was considering it as a potential requirement for their systems. 1 Login to Reply Share Share Share on Facebook Share on Twitter Share on WhatsApp Ashish Jaiswal 32 Questions 69 Answers 1 Best Answers 795 Points View Profile Ashish Jaiswal BlockchainProfessional Added an answer on January 30, 2019 at 7:31 am This answer was edited. Blockchains are decentralized ledgers which, by definition, are not controlled by a central authority. Due to the value stored in these ledgers, bad actors have huge economic incentives to try and cause faults. That said, Byzantine Fault Tolerance, and thus a solution to the Byzantine Generals’ Problem for blockchains is much needed. In the absence of BFT, a peer is able to transmit and post false transactions effectively nullifying the blockchain’s reliability. To make things worse, there is no central authority to take over and repair the damage. 0 Login to Reply Share Share Share on Facebook Share on Twitter Share on WhatsApp Leave an answerCancel replyYou must login or register to add a new answer.