Analysis of Fault Tolerance in Permissioned Blockchain Networks

Blockchain fundamentals are based on a distributed peer-to-peer network, which has to deal with fault tolerances, like all other similar networks. This is specifically important for blockchain technology, due to its promised data integrity features like immutability and traceability. In this paper, we analyze the basic principles of distributed consensus algorithms while focusing on permissioned blockchain networks. We analyze how distributed consensus mechanisms in two permissioned blockchain networks (Hyperledger Fabric and Iroha) cope with a crash fault-prone environment.