IBM's blockchain tech, marketed heavily as solving supply chain issues, has mostly seen limited adoption by big companies, including Walmart and Nestlé (Mike Murphy/Protocol)

Mike Murphy / Protocol:
IBM's blockchain tech, marketed heavily as solving supply chain issues, has mostly seen limited adoption by big companies, including Walmart and Nestlé  —  Big Blue has been pushing the blockchain for the food supply chain for years now — are companies actually using it?

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