As introduced in Chapter 7, Blockchains in Business, there are three main types of blockchain networks; public blockchains, consortium or federated blockchains, and private blockchains. Hyperledger is a blockchain framework which aims to help companies to build private or consortium permissioned blockchain networks, where multiple organizations can share the control and the permission to operate a node within the network.

Hyperledger is a set of open source tools and blockchain subprojects resulting from cross-industry collaboration. We will present two main components in this chapter – Hyperledger Fabric and Hyperledger Composer – while in the next chapter we will have the opportunity to discover other tools.