We present HotStuff, a leader-based Byzantine fault-tolerant replication protocol for the
partially synchronous model. Once network communication becomes synchronous, HotStuff …

A major approach to overcoming the performance and scalability limitations of current
blockchain protocols is to use sharding which is to split the overheads of processing …

Byzantine fault tolerant (BFT) consensus protocols are becoming an appealing solution to
blockchains. As most blockchain systems are deployed on Wide Area Networks (WANs) …

Web3 applications based on blockchains regularly need access to randomness that is
unbiased, unpredictable, and publicly verifiable. For Web3 gaming applications, this …

Most blockchain solutions are susceptible to quantum attackers as they rely on cryptography
that is known to be insecure in the presence of quantum adversaries. In this work we …

Asynchronous Byzantine Fault-Tolerant (BFT) consensus protocols maintain strong
consistency across nodes (ie, ensure safety) and terminate probabilistically (ie, ensure …

In this work, we study the blockchain leader election problem. The purpose of such protocols
is to elect a leader who decides on the next block to be appended to the blockchain, for each …

We study the problem of providing blockchain applications with\emph {economically viable
randomness}(EVR), namely, randomness that has significant economic consequences …

A verifiable random function (VRF) allows the generation of a random number with publicly
verifiable proof, showing that the random number is honestly generated. The practical VRF …

Since the introduction of Bitcoin and the blockchain, the cryptocurrency space has seen
rapid innovation in both academic research and in cutting edge designs from industry …