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You're reading from  Learn Blockchain Programming with JavaScript

Product typeBook
Published inNov 2018
Reading LevelIntermediate
PublisherPackt
ISBN-139781789618822
Edition1st Edition
Languages
JavaScript
Tools
Node.js
Concepts
Blockchain
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Author (1)
Eric Traub
Eric Traub
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Eric Traub

Eric Traub currently works as a software engineer in New York City. He has extensive experience working as a teacher and instructing people in a variety of different subjects. He changed his career from teaching to software engineering because of the excitement it brings to him and the passion that he has for it. He is now lucky enough to have the opportunity to combine both of these passions - software engineering and teaching!
Read more about Eric Traub

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What is a Proof of Work?

The next method that we are going to add to our blockchain data structure is the proofOfWork method. This method is very important and essential to the blockchain technology. It is because of this method that Bitcoin and many other blockchains are so secure.

Now, you must be getting curious about what a Proof of Work (PoW) actually is. Well, if we take a look at our blockchain, every blockchain is pretty much a list of blocks. Every single block has to be created and added to the chain. However, we don't just want any block to be created and added to the chain. We want to make sure that every block that is added to the chain is legitimate, has the correct transactions, and has the correct data inside of it. This is because if it doesn't have the correct transactions or the correct data, then people could fake how much Bitcoin they have and essentially...

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Learn Blockchain Programming with JavaScript
Published in: Nov 2018Publisher: PacktISBN-13: 9781789618822
© 2018 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Eric Traub

Eric Traub currently works as a software engineer in New York City. He has extensive experience working as a teacher and instructing people in a variety of different subjects. He changed his career from teaching to software engineering because of the excitement it brings to him and the passion that he has for it. He is now lucky enough to have the opportunity to combine both of these passions - software engineering and teaching!
Read more about Eric Traub

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