A Scalable Proof-of-Stake Blockchain in the Open Setting

Consensus protocol

Lei Fan, Jonathan Katz, and Hong-Sheng Zhou
Stanford Blockchain Conference (BPASE) 2019

Bitcoin and blockchain technologies have proven to be a phenomenal success. The underlying techniques hold huge promise to change the future of financial transactions, and eventually the way people and companies compute, collaborate, and interact. At the same time, the current Bitcoin-like proof-of-work based blockchain systems are facing many challenges. We propose a new approach to constructing energy-efficient blockchain protocols.

Statement Voting

Bingsheng Zhang, Hong-Sheng Zhou.
Financial Cryptography and Data Security (FC) 2019

Incentivizing Blockchain Forks via Whale Transactions

Jonathan Katz and Kevin Liao.
4th Workshop on Bitcoin and Blockchain Research (BITCOIN 2017)

Nonoutsourceable Scratch-Off Puzzles to Discourage Bitcoin Mining Coalitions

Andrew Miller, Ahmed E. Kosba, Jonathan Katz, Elaine Shi.
ACM Conference on Computer and Communications Security (CCS), 2015

PermaCoin: Repurposing Bitcoin Work for Long-Term Data Preservation

Andrew Miller, Ari Juels, Elaine Shi, Bryan Parno, Jonathan Katz.
Proceedings of the IEEE Symposium on Security and Privacy (Oakland), 2014

On Expected Constant-Round Protocols for Byzantine Agreement

Jonathan Katz, Chiu-Yuen Koo.
International Conference on Advances in Cryptology (CRYPTO) 2006

TwinsCoin: A Cryptocurrency via Proof-of-Work and Proof-of-Stake

Alexander Chepurnoy, Tuyet Duong, Lei Fan, Hong-Sheng Zhou.
BCC 2018 — The Second ACM Workshop on Blockchain, Cryptocurrencies and Contracts