I am a PhD researcher at Yale University studying formal verification of distributed algorithms,
advised by
Prof. Zhong Shao.
I lead efforts to verify both safety and liveness of distributed consensus protocols
deployed in the blockchain industry, including
HotStuff,
Jolteon,
Bullshark,
and
Mysticeti,
using the
Coq Proof Assistant. Our techniques can also be applied to more conventional consensus algorithms including
Multi-Paxos and
Raft that are widely-adopted in the industry. See my publications for details.
Longfei Qiu, Jingqi Xiao, Ji-Yong Shin, Zhong Shao.
SureDistrib: Verifying Almost-sure Termination of Composite Asynchronous Byzantine Protocols.
PLDI 2026. Conditionally Accepted.