EXPLORING CONSENSUS WITH PARALLEL PROPOSALS: THE DIFFERENCE BETWEEN PBFT AND BBCA-CHAIN

Summary from the TLDR Crypto newsletter

PBFT and BBCA-Chain are Byzantine Fault Tolerant consensus protocols that share similarities in their three-phase flow but differ in how they handle view changes and achieve parallelism. BBCA-Chain places consensus inside a DAG, allowing for parallel block transmission and reduced communication complexity compared to PBFT, which relies on a single leader to propose blocks sequentially. BBCA-Chain is most similar to Bullshark, which is used in Aleo.