Abstract
Blockchain as an emergent decentralized digital technology has been widely explored in many sectors to remedy the deficiencies of centralized solutions It has been recognized that blockchain technology has great potential to facilitate business activities spanning the whole life cycle of a building project in the construction industry, such as better communication or understanding, documents sharing, stage transition and quality endorsement. A comprehensive review of the literature regarding the application of blockchain in the construction domain found that there are few studies and applications of blockchain in construction practices, and most of the current research involves qualitative studies only. In this paper, we aim to explore the feasibility of applying both public blockchain and private blockchain technologies in the construction industry using two industry cases. Two business process cases (i.e., Case 1 and Case 2) were selected and used to drive the blockchain-based software system architecture design. The proposed architectures were demonstrated using Hyperledger Fabric (a private, permissioned and open source blockchain platform) and Ethereum (a public blockchain platform) respectively, to reflect the different requirements of the two use cases. This pilot study also illustrates the process, benefits, and challenges of adopting private and public blockchain technologies in construction domain. This research provides insights to researchers and practitioners regarding the adoption of blockchain technology, especially in construction industry.
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