Figure 13.2: Hyperledger Fabric Peers

A peer can also host more than one ledger and smart contracts

depending upon the requirement.

13.1.6 Channel

Hyperledger Fabric introduced a concept of security zones with a

new feature called channel that enables us to create kinds of

Blockchains within a Blockchain. A channel is a zone within which,

only the organizations affiliated to that channel can share the

information. Of course, there is a base channel on which all the

organizations in the network are registered, but then, on the basis of

the business requirements, the channels facilitate the organizations

to create different channels with a smaller group of selected

organizations to share the information within that group.

13.1.7 Orderer

Orderers are nodes responsible for creating an order of transactions

after they are endorsed by endorsing the peers. The group of

orderers collectively create the ordering service. Each orderer is