Channel

A channel is a primary communications mechanism between the members of a consortium. There can be multiple channels in a network.

Channels provide a mechanism for data isolation and confidentiality. Once a channel has been created, it operates separately from other channels. Only organizations that are explicitly specified in the channel configuration have any control over a channel. Moreover, the data in a channel is completely isolated from the rest of the network, including other channels. A channel-specific ledger is shared across the peers in the channel, and transacting parties must be properly authenticated to a channel in order to interact with it.

Therefore, a channel can be considered a blockchain subnetwork of a Hyperledger Fabric blockchain network.