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Mastering Blockchain

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

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Product type Paperback
Published in Mar 2017
Publisher Packt
ISBN-13 9781787125445
Length 540 pages
Edition 1st Edition
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Author (1):
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Imran Bashir Imran Bashir
Author Profile Icon Imran Bashir
Imran Bashir
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Table of Contents (14) Chapters Close

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

CAP theorem and blockchain

Strangely, it seems that the CAP theorem is violated in blockchain, and especially in the most successful implementation: bitcoin, but this is not the case. In blockchains consistency is sacrificed in favor of availability and partition tolerance. In this scenario, Consistency (C) on the blockchain is not achieved simultaneously with Partition tolerance (P) and Availability (A), but it is achieved over time. This is called eventual consistency, where consistency is achieved as a result of validation from multiple nodes over time. For this purpose, the concept of mining was introduced in bitcoin; this is a process that facilitates the achievement of consensus by using a consensus algorithm called PoW. At a higher level, mining can be defined as a process that is used to add more blocks to the blockchain.

You have been reading a chapter from
Mastering Blockchain
Published in: Mar 2017
Publisher: Packt
ISBN-13: 9781787125445
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