HFCP: Hyperledger Fabric Certified Practitioner

Hyperledger Fabric has one ledger per channel, and every peer maintains a copy of the ledger for each channel of which it is a member. Therefore, a peer’s ledger copy belongs to a member channel.

The peer channel join command joins a peer to a channel, typically using the channel’s genesis block supplied through its block-path flag.

Private data collections restrict confidential data to the authorized subset of organizations on a channel. Their collection definitions identify the organizations permitted to store and transact with that private data, while other channel members receive only its hash.

Hyperledger Fabric records committed transactions on an immutable ledger. Updating an asset produces a later transaction and current world-state value rather than altering the historical record.

The RAFT leader receives new log entries, coordinates their replication to follower nodes, and manages commitment by advancing the commit index after the required replication has occurred.