Consensus algorithms are applied in the context of distributed computer systems to improve
their fault tolerance. The explosive development of distributed ledger technology following …

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

Many blockchain applications use decentralized oracles to trustlessly retrieve external
information as those platforms are agnostic to real-world information. Some existing …

A blockchain is a distributed ledger for recording transactions, maintained by many nodes
without central authority through a distributed cryptographic protocol. All nodes validate the …

Popular permissionless distributed ledger technology (DLT) systems using proof-of-work
(PoW) for Sybil attack resistance have extreme energy requirements, drawing stern criticism …

Owing to the incremental and diverse applications of cryptocurrencies and the continuous
development of distributed system technology, blockchain has been broadly used in fintech …

Consensus in decentralized systems that asynchronously receive events and which are
subject to Byzantine faults is a common problem with many real-life applications. Advances …

In this chapter, we explore the attack surface of Blockchains and possible ways in which this
technology can be compromised. Towards this goal, we attribute attack viability in the attack …

IdAPoS is an identity-based consensus protocol for decentralised Blockchain networks that
implements a trustless reputation system by extending Proof-of-Stake to facilitate leader …

Blockchain has found applications to track ownership of digital assets. Yet, several
blockchains were shown vulnerable to network attacks. It is thus crucial for companies to …