2019/09/23 by Roberto Saltini, Saltini, Roberto, David Hyland-Wood +1
Computer Science · #Blockchain Technology Applications and Security #Distributed #Distributed systems and fault tolerance #FOS: Computer and information sciences #Parallel #Security and Verification in Computing #and Cluster Computing (cs.DC)
paper · pdf · doi:10.48550/arxiv.1909.10194
openalex publication_date 2019/09/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In this work, we present IBFT 2.0 (Istanbul BFT 2.0), which is a Proof-of-Authority (PoA) Byzantine-fault-tolerant (BFT) blockchain consensus protocols that (i) ensures immediate finality, (ii) is robust in an eventually synchronous network model and (iii) features a dynamic validator set. IBFT 2.0, as the name suggests, builds upon the IBFT blockchain consensus protocol retaining all of the original features while addressing the safety and liveness limitations described in one of our previous works. In this paper, we present a high-level description of the IBFT 2.0 protocol and related robustness proof. Formal specification of the protocol and related formal proofs will be subject of a separate body of work. We also envision a separate work that will provide detailed implementation specifications for IBFT 2.0.