Hyperledger Composer helps you to model your current business network quickly, which involves identifying the parties doing business, and their roles. Multiple participants will access the business network, and each maintainer of the network will host several peer nodes, which will replicate the ledger data between them.
If you have run through the example in the previous chapter, navigate to the blockchain-by-example/ folder, and create a folder called letterofcredit/. If you don’t have a blockchain-by-example/ folder, just create the letterofcredit/ folder at a location you prefer.
Use yo hyperledger-composer:businessnetwork to generate a business network project template with Yeoman's help. You'll need to answer a few questions about your new application:
If you choose to generate an empty template, you'll get a set of files, as shown in the following screenshot:
Let's look at each part of the Composer network definition.