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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

Transactions

Transactions are at the core of the bitcoin ecosystem. Transactions can be as simple as just sending some bitcoins to a bitcoin address, or it can be quite complex depending on the requirements. Each transaction is composed of at least one input and output. Inputs can be thought of as coins being spent that have been created in a previous transaction and outputs as coins being created. If a transaction is minting new coins, then there is no input and therefore no signature is needed. If a transaction is to sends coins to some other user (a bitcoin address), then it needs to be signed by the sender with their private key and a reference is also required to the previous transaction in order to show the origin of the coins. Coins are, in fact, unspent transaction outputs represented in Satoshis.

Transactions are not encrypted and are publicly visible in the blockchain. Blocks are made up of transactions and these can be viewed using any online blockchain explorer.

The transaction...

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