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Mastering Blockchain

You're reading from Mastering Blockchain Deeper insights into decentralization, cryptography, Bitcoin, and popular Blockchain frameworks

Product type Paperback

Published in Mar 2017

Publisher Packt

ISBN-13 9781787125445

Length 540 pages

Edition 1st Edition

Languages

Solidity

Tools

Bitcoin

Concepts

Blockchain

Author (1):

Imran Bashir

View More author details

Table of Contents (14) Chapters

Preface

1. Blockchain 101 FREE CHAPTER

2. Decentralization

3. Cryptography and Technical Foundations

4. Bitcoin

5. Alternative Coins

6. Smart Contracts

7. Ethereum 101

8. Ethereum Development

9. Hyperledger

10. Alternative Blockchains

11. Blockchain-Outside of Currencies

12. Scalability and Other Challenges

13. Current Landscape and Whats Next

Primecoin

Primecoin is the first digital currency on the market that introduced a useful PoW, as opposed to bitcoin's SHA256-based PoW. Primecoin uses searching prime numbers as a PoW. Not all types of prime number meet the requirements to be selected as PoW. Three types of prime numbers (known as Cunningham chain of first kind, Cunningham chain of second kind, and bi-twin chains) meet the requirements of a PoW algorithm to be used in cryptocurrencies. The difficulty is dynamically adjusted via a continuous difficulty evaluation scheme in Primecoin blockchain. The efficient verification of PoW based on prime numbers is also of high importance, because if verification is slow then PoW is not suitable. Therefore prime chains are selected as a PoW because finding prime chains gets difficult as the chain increases in length whereas verification remains quick enough to warrant being used as an efficient PoW algorithm. It is also important that once a PoW has been verified on a block it must not...

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