A holistic assessment of blockchain-based traceability systems: The case of protected designation of origin feta cheese production

The implementation of blockchain (BC) technology in food traceability has attracted the attention of both scholars and practitioners because this technology enhances transparency and efficiency. While previous studies have attempted to assess the technical performance of BC-based applications, comprehensive economic and environmental assessments of BC-based food traceability systems are lacking. This study performs a technical, environmental and economic assessment of BC-based food traceability using a private BC (Quorum) and a public BC (Ethereum). The case study is the production of protected designation of origin feta cheese in Greece. The proposed BC-based system was found to have insignificant environmental impacts when compared to the existing impacts of feta production. Furthermore, the implementation of BC-based food traceability was found to be profitable for dairy producers when consumers' willingness to pay a price premium for BC-based traceable products is taken into account. Sensitivity analyses under different scaling-up scenarios, from a purely technical perspective (i.e. increase in transaction volume and frequency) to scaling production, emphasised the potential benefits of BC-based food traceability from a scalability perspective.