IOTA blockchain system is lightweight without heavy proof-of-work mining phases, which is
considered a promising service platform of Internet of Things applications. IOTA organizes …

IOTA organizes transactions in the ledger as a Directed Acyclic Graph (DAG) called Tangle,
instead of a hash chain of transaction blocks used by most of traditional blockchains. IOTA is …

Blockchain has been considered as the enabler to provide automated and trust-less Internet
of things (IoT) services. However, legacy consensus mechanisms applied in most of the …

We develop an optimization framework to increase network scalability and to incorporate a
priority level for essential transactions based on the Internet of Things and Application …

Bitcoin generates a massive amount of data every day due to its innate transparency and
capacity of operating completely decentralised. In this paper, we introduce on-chain metrics …

Note that the serial structure of blockchain has many essential pitfalls, thus a data network
structure and its DAG-based blockchain are introduced to resolve the blockchain pitfalls …

Blockchain is one of the new tools which is still experiencing a serious lack of understanding
and awareness in general public. Besides, to say that blockchain is a versatile technology …

This paper presents a new blockchain network simulator that uses bitcoin's original
reference implementation as its main application. The proposed simulator leverages the use …

An increased pattern of hidden Internet of Things (IoT) devices has been observed. Due to
the increased number of security attacks, a large number of IoT devices are disappearing …

The growing number of applications for distributed ledger technologies is driving both
industry and academia to solve the limitations of blockchain, particularly its scalability …