A Survey of State-of-the-Art on Blockchains

Abstract

To draw a roadmap of current research activities of the blockchain community, we first conduct a brief overview of state-of-the-art blockchain surveys published in the past 5 years. We found that those surveys are basically studying the blockchain-based applications, such as blockchain-assisted Internet of Things (IoT), business applications, security-enabled solutions, and many other applications in diverse fields. However, we think that a comprehensive survey toward the essentials of blockchains by exploiting the state-of-the-art theoretical modelings, analytic models, and useful experiment tools is still missing. To fill this gap, we perform a thorough survey by identifying and classifying the most recent high-quality research outputs that are closely related to the theoretical findings and essential mechanisms of blockchain systems and networks. Several promising open issues are also summarized for future research directions. We hope this survey can serve as a useful guideline for researchers, engineers, and educators about the cutting-edge development of blockchains in the perspectives of theories, modelings, and tools.

Leveraging BIM and Blockchain for Digital Twins

“…Immutability: Security breaches are limited since the Blockchain is an immutable and open network. Node replication is used where each node in the system has a copy of the digital ledger [59]. When the intermediary blocks are being transferred between software tools, the Blockchain channel ensures that files are not tampered.…”

Segurança e Escalabilidade em Sharding Blockchain

“…Para melhor compreensão dos desafios de pesquisa em aberto na área de Blockchain, iremos dividir tais desafios em dois tópicos, Performance e Segurança, como proposto em [Yu et al 2020] e [Huang et al 2021]. Mecanismos Resilientes para Sharding: Os mecanismos resilientes para fragmentar blockchains ainda estão faltando [Huang et al 2021].…”

Chaos Engineering of Ethereum Blockchain Clients

“…There are several surveys that focus on different directions of research on blockchain systems. For example, Huang et al [31] conducted a survey of the state-of-the-art on blockchains including the theories, modelings, and tools. Fan et al [24] presented a survey that focuses on performance evaluation of blockchain systems.…”

“…To the best of our knowledge, there is little research work done on the reliability of blockchain systems [31]. Particularly, no previous work has been done to research how chaos engineering can help evaluate the resilience of blockchain clients.…”