Abstract: Recently, food contamination incidents have occurred frequently. To deal with food safety issues and enhance brand image, many large retail companies (e.g., Walmart) have deployed blockchain technology to improve the transparency of their supply chains., which can make the source traceable and the responsibility accountable. Since then, retailers have begun to encourage more suppliers to join their own blockchain platforms. However, when there is competition among suppliers, suppliers must not only weigh the advantages (brand image enhancement) and disadvantages (cost) of joining the blockchain platform, but also consider the multi-party game with competitors and retailers. Therefore, it is meaningful to study the participation incentive and preference of supply chain members for blockchain.

Key words: retail supply chain; blockchain; participation incentive; product pricing