Title: Design of group decision-making mechanism based on smart contracts

Authors: Pin-Chang Su; Yi-En Chen; Bo-Yuan Yang; Cheng-Chun Wu

Addresses: Department of Information Management, National Defense University, No. 70, Section 2, Zhongyang N. Rd., Beitou Dist., Taipei City, 112305, Taiwan ' Department of Information Management, National Defense University, No. 70, Section 2, Zhongyang N. Rd., Beitou Dist., Taipei City, 112305, Taiwan ' Department of Information Management, National Defense University, No. 70, Section 2, Zhongyang N. Rd., Beitou Dist., Taipei City, 112305, Taiwan ' Department of Information Management, National Defense University, No. 70, Section 2, Zhongyang N. Rd., Beitou Dist., Taipei City, 112305, Taiwan

Abstract: As the complexity of organisational decision-making increases, group decision-making mechanisms have become indispensable for engaging multiple parties in the decision-making process. Nevertheless, interpersonal pressures within groups or constraints due to hierarchical relationships result in suboptimal outcomes of group decision-making, thus resulting in low meeting efficiency and the inability to effectively address issues. The advent of blockchain technology, which features decentralised and immutable characteristics, presents a novel solution. The automated execution of smart contracts facilitates a more transparent and credible decision-making process. This study proposes a blockchain-based group decision-making mechanism that integrates a self-certification system, elliptic curve cryptography (ECC), threshold signatures, and blind signatures. This framework serves to enhance the security and automation of the decision-making process, thereby improving its fairness, transparency, and efficiency. Therefore, the proposed mechanism addresses the issues of information opacity and low trust levels toward current systems.

Keywords: group decision-making; blockchain; smart contracts; blind signatures; self-certification.

DOI: 10.1504/IJISCM.2025.154308

International Journal of Information Systems and Change Management, 2025 Vol.15 No.3, pp.344 - 364

Received: 24 Jun 2025
Accepted: 30 Jan 2026
Published online: 19 Jun 2026 *

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