With the proliferation of blockchain technology in high-value sectors, consensus protocols
are becoming critical infrastructures. The rapid innovation cycle in Byzantine fault tolerant …

Public randomness is a fundamental component in many cryptographic protocols and
distributed systems and often plays a crucial role in ensuring their security, fairness, and …

We present staircase attack, the first attack on the incentive mechanism of the Proof-of-Stake
(PoS) protocol used in Ethereum 2.0 beacon chain. Our attack targets the penalty of the …

Edge devices with sensing, storage, and communication resources are penetrating our daily
lives. These resources make it possible for edge devices to conduct data transactions (eg …

Bitcoin is the most secure blockchain in the world, supported by the immense hash power of
its Proof-of-Work miners. Proof-of-Stake chains are energy-efficient, have fast finality but face …

Blockchain has been viewed as a breakthrough and an innovative technology due to its
privacy, security, immutability, and data integrity characteristics. The consensus layer of the …

Blockchain systems based on a reusable resource, such as proof-of-stake (PoS), provide
weaker security guarantees than those based on proof-of-work. Specifically, they are …

This paper centers around a simple yet crucial question for everyday users: How should one
choose their delegated validators within proof-of-stake (PoS) protocols, particularly in the …

Blockchain protocols typically aspire to run in the permissionless setting, in which nodes are
owned and operated by a large number of diverse and unknown entities, with each node …

Nowadays, blockchain has become increasingly popular due to its promise of supporting
critical business services in various areas. Blockchain systems, like Ethereum and …