Blockchain Based Smart Contracts : A Systematic Mapping Study

Alharby, Maher; Moorsel, Aad van

doi:10.5121/csit.2017.71011

Cited by 307 publications

(155 citation statements)

References 26 publications

(9 reference statements)

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“…According to calculated statistics considering the data taken from official statistics site of Turkey [15], it is known that there were about 56 million voters at the 2018 general elections in Turkey. Considering this number, it is assumed that 700 clusters (clusters include voting centers under them) would be enough.…”

Section: Discussionmentioning

confidence: 99%

Blockchain-Based Electronic Voting System for Elections in Turkey

Bulut

Kantarcı

Keskin

et al. 2019

2019 4th International Conference on Computer Science and Engineering (UBMK)

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Traditional elections satisfy neither citizens nor political authorities in recent years. They are not fully secure since it is easy to attack votes. It threatens also privacy and transparency of voters. Additionally, it takes too much time to count the votes. This paper proposes a solution using Blockchain to eliminate all disadvantages of conventional elections. Security and data integrity of votes is absolutely provided theoretically. Voter privacy is another requirement that is ensured in the system. Lastly, waiting time for results decreased significantly in proposed Blockchain voting system.

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Section: Discussionmentioning

confidence: 99%

Blockchain-Based Electronic Voting System for Elections in Turkey

Bulut

Kantarcı

Keskin

et al. 2019

2019 4th International Conference on Computer Science and Engineering (UBMK)

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“…Despite the fact that Ethereum and smart contracts are relatively new, many studies have been performed on security aspects of smart contracts. Some studies focus on creating taxonomies of smart contract security vulnerabilities (e.g., [15], [25]- [27]). Others focus on specific bug detection.…”

Section: Smart Contract and Security Problemsmentioning

confidence: 99%

Checking Smart Contracts With Structural Code Embedding

Gao

Jiang

Xia

et al. 2021

IIEEE Trans. Software Eng.

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Smart contracts have been increasingly used together with blockchains to automate financial and business transactions. However, many bugs and vulnerabilities have been identified in many contracts which raises serious concerns about smart contract security, not to mention that the blockchain systems on which the smart contracts are built can be buggy. Thus, there is a significant need to better maintain smart contract code and ensure its high reliability. In this paper, we propose an automated approach to learn characteristics of smart contracts in Solidity, which is useful for clone detection, bug detection and contract validation on smart contracts. Our new approach is based on word embeddings and vector space comparison. We parse smart contract code into word streams with code structural information, convert code elements (e.g., statements, functions) into numerical vectors that are supposed to encode the code syntax and semantics, and compare the similarities among the vectors encoding code and known bugs, to identify potential issues. We have implemented the approach in a prototype, named SMARTEMBED , and evaluated it with more than 22,000 smart contracts collected from the Ethereum blockchain. Results show that our tool can effectively identify many repetitive instances of Solidity code, where the clone ratio is around 90%. Code clones such as type-III or even type-IV semantic clones can also be detected accurately. Our tool can identify more than 1000 clone related bugs based on our bug databases efficiently and accurately. Our tool can also help to efficiently validate any given smart contract against a known set of bugs, which can help to improve the users' confidence in the reliability of the contract. !

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“…Research in the smart contract technology has evolved from the conceptual-based architecture to the applicationoriented scenarios. According to the systematic mapping study conducted by Alharby et al [18] in 2018, 64% of total 188 relevant papers on smart contracts were from the applications category compared to a very few applicationoriented academic papers in 2017, when they extracted only 24 papers in total. Their 2017 study shows that about 66% of the papers focused on the conceptual level of finding and tackling smart contract issues.…”

Section: B Smart Contractmentioning

confidence: 99%

User Data Sharing Frameworks: A Blockchain-Based Incentive Solution

Shrestha

Vassileva

2019

2019 IEEE 10th Annual Information Technology, Electronics and Mobile Communication Conference (IEMCON)

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Currently, there is no universal method to track who shared what, with whom, when and for what purposes in a verifiable way to create an individual incentive for data owners. A platform that allows data owners to control, delete, and get rewards from sharing their data would be an important enabler of user data-sharing. We propose a usable blockchain-and smart contracts-based framework that allows users to store research data locally and share without losing control and ownership of it. We have created smart contracts for building automatic verification of the conditions for data access that also naturally supports building up a verifiable record of the provenance, incentives for users to share their data and accountability of access. The paper presents a review of the existing work of research data sharing, the proposed blockchain-based framework and an evaluation of the framework by measuring the transaction cost for smart contracts deployment. The results show that nodes responded quickly in all tested cases with a befitting transaction cost.

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Blockchain Based Smart Contracts : A Systematic Mapping Study

Abstract: ABSTRACT

Cited by 307 publications

References 26 publications

Blockchain-Based Electronic Voting System for Elections in Turkey

Blockchain-Based Electronic Voting System for Elections in Turkey

Checking Smart Contracts With Structural Code Embedding

User Data Sharing Frameworks: A Blockchain-Based Incentive Solution

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