Which major retail innovation first successfully used blockchain technology to allow consumers to track a product's entire journey from source to store in 2016?

In recent years, blockchain technology has transformed retail supply chains by creating unprecedented transparency and trust between brands and consumers. This innovation has allowed shoppers to verify product authenticity, origin, and ethical practices with just a smartphone scan. Test your knowledge about this revolutionary retail technology that's changing how we shop and how brands build customer loyalty through transparency.

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Walmart's Food Safety Blockchain Initiative
Provenance's Tuna Supply Chain Tracking Project
Amazon's Transparency Authentication Program
Carrefour's Blockchain Food Traceability System