The scalability problem has been one of the most significant barriers limiting the adoption of
blockchains. Blockchain sharding is a promising approach to this problem. However, the …

From weak clients outsourcing computational tasks to more powerful machines, to
distributed blockchain nodes needing to agree on the state of the ledger in the presence of …

Committee-based permissionless blockchain approaches overcome single leader
consensus protocols' scalability issues by partitioning the outstanding transaction set into …

Abstract Denial of Service (DoS) attacks are a growing threat in network services. The
frequency and intensity of DoS attacks are rapidly increasing day by day. The immense …

In spite of multiple advantages of the adoption of blockchain (BC), it still faces some
integration challenges in modern applications, such as the Internet of Things. These …

This article introduces a novel scalable multishard Byzantine fault tolerance (Shar BFT)
consensus protocol combined with a blockchain sharding optimization scheme. Shar BFT …

Reliable and verifiable public randomness is not only an essential building block in various
cryptographic primitives, but also is a critical component in many distributed and …

Purpose This paper aims to provide a framework regarding Information Technology (IT)
Flexibility in Supply Chain and its relationship with the benefits we could see from Enterprise …

Blockchain technology has been widely used in many fields, such as smart cities, smart
health care, and smart manufacturing, due to its anonymity, decentralization, and tamper …

Nowadays, sharding is deemed a promising way to save traditional blockchain protocols
from their low scalability. However, such a technique also brings several potential risks and …