English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Blockchain has been regarded as a promising technology for Internet of Things(IoT), since it provides significant solutions for decentralized network whichcan address trust and security concerns, high maintenance cost problem, etc.The decentralization provided by blockchain can be largely attributed to theuse of consensus mechanism, which enables peer-to-peer trading in a distributedmanner without the involvement of any third party. This article starts fromintroducing the basic concept of blockchain and illustrating why consensusmechanism plays an indispensable role in a blockchain enabled IoT system. Then,we discuss the main ideas of two famous consensus mechanisms including Proof ofWork (PoW) and Proof of Stake (PoS), and list their limitations in IoT. Next,two mainstream Direct Acyclic Graph (DAG) based consensus mechanisms, i.e., theTangle and Hashgraph, are reviewed to show why DAG consensus is more suitablefor IoT system than PoW and PoS. Potential issues and challenges of DAG basedconsensus mechanism to be addressed in the future are discussed in the last.

When Internet of Things Meets Blockchain: Challenges in Distributed Consensus