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You're reading from  Building Blockchain Projects

Product typeBook
Published inApr 2017
Reading LevelBeginner
PublisherPackt
ISBN-139781787122147
Edition1st Edition
Languages
Solidity
Tools
Blockchain
Concepts
Cryptocurrency
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Author (1)
Narayan Prusty
Narayan Prusty
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Narayan Prusty

Narayan Prusty is a full-stack developer. He works as a consultant for various start-ups around the world. He has worked on various technologies and programming languages but is very passionate about JavaScript, WordPress, Ethereum, Solr, React, Cordova, MongoDB, and AWS. Apart from consulting for various start-ups, he also runs a blog titled QNimate and a video tutorial site titled QScutter, where he shares information about a lot of the technologies he works on.
Read more about Narayan Prusty

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What is Proof-of-Authority consensus?

PoA is a consensus mechanism for blockchain in which consensus is achieved by referring to a list of validators (referred to as authorities when they are linked to physical entities). Validators are a group of accounts/nodes that are allowed to participate in the consensus; they validate the transactions and blocks.

Unlike PoW or PoS, there is no mining mechanism involved. There are various types of PoA protocols, and they vary depending on how they actually work. Hyperledger and Ripple are based on PoA. Hyperledger is based on PBFT, whereas ripple uses an iterative process.

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Building Blockchain Projects
Published in: Apr 2017Publisher: PacktISBN-13: 9781787122147
© 2017 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Narayan Prusty

Narayan Prusty is a full-stack developer. He works as a consultant for various start-ups around the world. He has worked on various technologies and programming languages but is very passionate about JavaScript, WordPress, Ethereum, Solr, React, Cordova, MongoDB, and AWS. Apart from consulting for various start-ups, he also runs a blog titled QNimate and a video tutorial site titled QScutter, where he shares information about a lot of the technologies he works on.
Read more about Narayan Prusty

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