To get the most out of this book

1. We've focused on organization and flow. The content is made to ensure not only an easy-to-follow and natural flow but also topical modularity.
2. Each chapter explores a facet of blockchain. While Hyperledger projects are specifically discussed, the core areas of focus are universal to blockchain technology discipline.
3. Explore the summary and tips in each chapter to get an essence of topics covered.
4. There are chapters that provide general blockchain business and technology landscape discussions, and there are chapters that go into specific technical how-to. Both are important topics to broaden your knowledge base.

Download the example code files

You can download the example code files for this book from your account at www.packtpub.com. If you purchased this book elsewhere, you can visit www.packtpub.com/support and register to have the files emailed directly to you.

You can download the code files by following these steps:

1. Log in or register at www.packtpub.com.
2. Select the SUPPORT tab.
3. Click on Code Downloads & Errata.
4. Enter the name of the book in the Search box and follow the onscreen instructions.

Once the file is downloaded, please make sure that you unzip or extract the folder using the latest version of:

• WinRAR/7-Zip for Windows
• Zipeg/iZip/UnRarX for Mac
• 7-Zip/PeaZip for Linux

The code bundle for the book is also hosted on GitHub at https://github.com/PacktPublishing/Handson-Blockchain-Development-with-Hyperledger. We also have other code bundles from our rich catalog of books and videos available at https://github.com/PacktPublishing/. Check them out!

Conventions used

There are a number of text conventions used throughout this book.

CodeInText: Indicates code words in text, database table names, folder names, filenames, file extensions, path names, dummy URLs, user input, and Twitter handles. Here is an example: "The orderer belongs to its own organization called TradeOrdererOrg."

A block of code is set as follows:

- &ExporterOrg
  Name: ExporterOrgMSP
  ID: ExporterOrgMSP
  MSPDir: crypto-config/peerOrganizations/exporterorg.trade.com/msp
  AnchorPeers:
    - Host: peer0.exporterorg.trade.com
    Port: 7051

Any command-line input or output is written as follows:

CONTAINER ID    IMAGE    COMMAND    CREATED    STATUS    PORTS    NAMES
4e636f0054fc    hyperledger/fabric-peer:latest    "peer node start"    3 minutes ago    Up 3 minutes    0.0.0.0:9051->7051/tcp, 0.0.0.0:9053->7053/tcp    peer0.carrierorg.trade.com
28c18b76dbe8    hyperledger/fabric-peer:latest    "peer node start"    3 minutes ago    Up 3 minutes    0.0.0.0:8051->7051/tcp, 0.0.0.0:8053->7053/tcp    peer0.importerorg.trade.com
9308ad203362    hyperledger/fabric-ca:latest    "sh -c 'fabric-ca-se..."    3 minutes ago    Up 3 minutes    0.0.0.0:7054->7054/tcp    ca_peerExporterOrg

Bold: Indicates a new term, an important word, or words that you see onscreen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "You can apply for a letter of credit by clicking on the Apply button."

Warnings or important notes appear like this.

Tips and tricks appear like this.