Which major retailer first implemented blockchain technology in their supply chain for food safety in 2016, creating a system to track products from farm to shelf?

Blockchain technology has revolutionized numerous aspects of retail operations, from supply chain management to customer loyalty programs. This technology provides unprecedented transparency, security, and efficiency in tracking products from manufacturer to consumer. Test your knowledge about this transformative technology that's reshaping retail business models and consumer experiences. How well do you understand the history and implementation of blockchain in the retail sector?

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Walmart
Amazon
Carrefour
Alibaba