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Foundations of Blockchain

You're reading from Foundations of Blockchain

Product type Book

Published in Jan 2019

Publisher Packt

ISBN-13 9781789139396

Pages 372 pages

Edition 1st Edition

Languages

Concepts

Author (1):

Koshik Raj

Table of Contents (14) Chapters

Preface

1. Introduction

2. A Bit of Cryptography

3. Cryptography in Blockchain

4. Networking in Blockchain

5. Cryptocurrency

6. Diving into Blockchain - Proof of Existence

7. Diving into Blockchain - Proof of Ownership

8. Blockchain Projects

9. Blockchain Optimizations and Enhancements

10. Blockchain Security

11. When Shouldn't We Use Blockchain?

12. Blockchain Use Cases

13. Other Books You May Enjoy

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Blockchain

The blockchain in Bitcoin is a collection of an ordered lists of blocks that connects the previous block with the hash pointer. Bitcoin uses Google's LevelDB database to store the blockchain metadata. The identity of each block is created by using the SHA256 hash value of the block header, and this block hash is stored in the block header of the next block in the blockchain in order to form a link.

Block structure

The data structure of a Bitcoin block holds a collection of transactions and metadata information about the block. A block is made up of a header and body, which consists of all the transactions. A block holds more than 500 transactions, on average.

Table 5.2 shows all the fields that are included...

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Authors (1)

Koshik Raj

Koshik Raj is an information security enthusiast who holds a master's degree in computer science and information security. He has a background of working with RSA, a network security company. He has also worked as a senior developer in CoWrks, Bengaluru. Koshik has been studying blockchain technology since he was introduced to Bitcoin while pursuing his master's. He is currently advising an educational start-up looking to implement blockchain technology in the education space. He is also setting up a blockchain incubation center for students and researchers in Bengaluru to aid mentorship and networking, and even the launching and marketing of their ideas.

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