Blockchain technology has been adopted by major food companies to improve supply chain transparency and food safety. IBM Food Trust, built on Hyperledger Fabric, is the most prominent food blockchain platform, used by Walmart, Nestlé, Dole, and others.
IBM Food Trust
IBM Food Trust is a permissioned blockchain network that enables food supply chain participants to share traceability data in a secure, immutable ledger. Participants include growers, processors, distributors, and retailers. IBM Food Trust has been used to reduce the time to trace a food product from 7 days to 2.2 seconds in Walmart's leafy greens supply chain.
Walmart Food Safety Blockchain
Walmart requires its leafy green suppliers to use IBM Food Trust to upload supply chain data. This requirement was implemented following a series of E. coli outbreaks linked to romaine lettuce. Walmart's blockchain mandate demonstrates how major retailers can drive blockchain adoption throughout their supply chains.