Context-based Smart Contracts For Appendable-block Blockchains

Nunes, Henry Cabral; Lunardi, Roben Castagna; Zorzo, Avelino F.; Michelin, Regio A.; Kanhere, Salil S.

doi:10.1109/icbc48266.2020.9169466

Cited by 9 publications

(4 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A different number of gateways and devices, as well, different rate of transactions per second can influence the obtained results. Moreover, smart contracts transaction on appendable-block blockchains (as proposed by Nunes et al [22]) can lead to different execution results. In future work, we intend to evaluate different set of scenarios, e.g., larger scenarios with higher transaction rate with smart contracts executions.…”

Section: Discussion and Threats To Validitymentioning

confidence: 99%

Context-based consensus for appendable-block blockchains

Lunardi

Alharby

Nunes

et al. 2020

2020 IEEE International Conference on Blockchain (Blockchain)

Self Cite

View full text Add to dashboard Cite

Blockchain technology has been applied to various applications (e.g., smart buildings and smart cities) that typically run in an environment of smart devices, known as Internet-of-Things (IoT). To support these applications, different blockchain architectures, data structures and consensus algorithms have been proposed, tailored to IoT. One such proposal, appendableblock blockchain, is a promising blockchain framework for use in IoT environments. It provides a scalable data structure that allows parallel insertions between independent nodes. However, it has some limitations, in particular related to the possible eclipse attack by malicious gateways and the lack of consensus for transactions insertion. To solve these issues, we propose a new consensus mechanism for appendable-block blockchains, called context-based consensus. Using context-based consensus, information can be inserted in parallel across devices (called context) while ensuring that light-weight consensus is performed to guarantee that a transaction is well-formed and it is placed in the correct order. We implemented context-based consensus and show that using multiple contexts reduces latency and increases the throughput of transaction insertions when compared to consensus without contexts or using single transaction consensus.

show abstract

Section: Discussion and Threats To Validitymentioning

confidence: 99%

Context-based consensus for appendable-block blockchains

Lunardi

Alharby

Nunes

et al. 2020

2020 IEEE International Conference on Blockchain (Blockchain)

Self Cite

View full text Add to dashboard Cite

show abstract

“…Além desses avanços, buscaremos demonstrar a viabilidade e funcionalidade da patente de Rafael Zoto [Zotto 2021], principalmente as implementações que envolvem blockchain e todo o seu contexto. A Speedychain implementa um modelo de appendable-block blockchains com a possibilidade de uso de smart contracts [Nunes et al 2020]. Serão utilizados diversos trabalhos relacionados, desenvolvidos nessa mesma área [Lunardi et al 2022] [Lunardi et al 2019.…”

Section: Proposta De Soluçãounclassified

Proposta de Gestão do Ciclo de Vida de Equipamentos de TI com Appendable-block Blockchain

Silveira

Lunardi²,

Zorzo

2023

Anais Do VI Workshop Em Blockchain: Teoria, Tecnologias E Aplicações (WBlockchain 2023)

View full text Add to dashboard Cite

Blockchain tem sido aplicada em diversas áreas que exigem armazenamento seguro e descentralizado de informações. Uma dessas áreas é a gestão do ciclo de vida de dispositivos, que normalmente utiliza um modelo de armazenamento centralizado. No entanto, a aplicação de blockchains tradicionais neste contexto apresenta desafios, especialmente relacionados à latência e desempenho. Como resultado, novas topologias de blockchain têm sido desenvolvidas para melhorar essas propriedades, modificando a sua estrutura. Um exemplo de nova tecnologia é a appendableblock blockchain, que remove a inserção de transações da inserção de blocos, permitindo que novos dados sejam adicionados a uma cadeia auxiliar a partir do bloco principal. Este trabalho tem como objetivo ampliar os estudos neste novo modelo, abordando possíveis contribuições e melhorias na etapa de armazenamento, persistência e acesso eficiente aos dados, além de estudos sobre o processo de recuperação de informações do mesmo contexto, utilizando como estudo de caso uma patente que trata do armazenamento e recuperação de dados do ciclo de vida de dispositivos.

show abstract

“…In the smart contract, for example, the device can check the last version of firmware available and receive a hash of the newest version. Although smart contracts are important, they are still under development in SpeedyChain [33]. In this paper, the execution of smart contracts will not be discussed.…”

Section: Application Layermentioning

confidence: 99%

Appendable-block Blockchain Evaluation over Geographically-Distributed IoT Networks

Arruda

Lunardi

Nunes

et al. 2020

2020 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom)

Self Cite

View full text Add to dashboard Cite

In the last few years, different researchers presented proposals for using blockchain in the Internet of Things (IoT) environments. These proposals consider that IoT environments can be benefited from different blockchain characteristics, such as: resilience, distributed processing, integrity and non-repudiation of produced information. However, researchers faced some challenges to use blockchain in IoT, e.g., latency, hardware and energy constraints, and performance requirements. One of the prominent solutions is the appendable-block blockchain, which uses a hierarchical peer-to-peer (p2p) gateway-based architecture. Additionally, current proposals present simplified evaluation scenarios, usually performed in controlled environments, which do not include important network features, for example, latency. Consequently, a model to evaluate a geographically distributed environment, for example, in a situation in which health data have to be collected from different countries in a pandemic situation, can help to understand the behavior and possible flaws of blockchains. In order to evaluate appendable-block blockchains in a realistic scenario, this paper presents an analysis of different consensus algorithms in geographically distributed hosts, in which latency can impact the performance of main operations in a blockchain, such as block and transaction insertion.

show abstract

Context-based Smart Contracts For Appendable-block Blockchains

Cited by 9 publications

References 25 publications

Context-based consensus for appendable-block blockchains

Context-based consensus for appendable-block blockchains

Proposta de Gestão do Ciclo de Vida de Equipamentos de TI com Appendable-block Blockchain

Appendable-block Blockchain Evaluation over Geographically-Distributed IoT Networks

Contact Info

Product

Resources

About