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Mastering Blockchain

You're reading from  Mastering Blockchain

Product type Book
Published in Mar 2017
Publisher Packt
ISBN-13 9781787125445
Pages 540 pages
Edition 1st Edition
Languages
Concepts

Table of Contents (20) Chapters

Mastering Blockchain
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface
1. Blockchain 101 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

Elements of the Ethereum blockchain


In the following section, you will be introduced to various components of the Ethereum network and the blockchain. First, the basic concept of the EVM is given in the next section.

Ethereum virtual machine (EVM)

EVM is a simple stack-based execution machine that runs bytecode instructions in order to transform the system state from one state to another. The word size of the virtual machine is set to 256-bit. The stack size is limited to 1024 elements and is based on the LIFO (Last in First Out) queue. EVM is a Turing-complete machine but is limited by the amount of gas that is required to run any instruction. This means that infinite loops that can result in denial of service attacks are not possible due to gas requirements. EVM also supports exception handling in case exceptions occur, such as not having enough gas or invalid instructions, in which case the machine would immediately halt and return the error to the executing agent.

EVM is a fully isolated...

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