Permissioned blockchain has evolved to address the need to adopt blockchain among a set of known (and not necessarily trusted) but identifiable participants. Such participants first need to be explicitly admitted to the blockchain network. Here, knowing (identifying) participants is more important than fully trusting those known participants. These participants might not trust one another, but are known and identifiable and they are chained by a common goal. Hyperledger Fabric (HLF) (a permissioned blockchain) uses Byzantine Fault Tolerance (BFT) variant Practical BFT (PBFT), as the consensus protocol instead of proof of work (PoW). HLF offers improved functional qualities to permissioned blockchain, such as confidentiality and consistency, while also offering improved and enhanced non-functional qualities, such as performance and scalability.
This...
