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Retailer Carrefour Uses Blockchain To Trace Milk

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French grocery retailer Carrefour Group is applying blockchain technology on Carrefour Quality Line (CQL) fresh micro-filtered full-fat milk to trace the milk along the supply chain. The company plans to gradually start selling the traceable milk later in the month.

This follows the retailer's roll-out of blockchain technology to trace Auvergne chicken and farmhouse fattened chicken, tomatoes, eggs and most recently CQL oranges.

The use of blockchain guarantees consumers complete product traceability where food can be quickly traced back to its source in as little as a few seconds instead of days or weeks.

The QR code on the milk label can be scanned by consumers using their smartphones to access an interface which will give them the full information of the product supply chain.

The label provides consumers with information like which farm the cow is milked, the GPS coordinates of farmers whose animals' milk was collected, the cows' feeds depending on the season, exactly when the milk was collected, where it was packaged and right up to the date it was placed on the store shelves.

The label will also contain livestock rearing practices, microfiltration to store the milk, and quality checks conducted throughout the production process.

A year ago, Carrefour had launched Europe's first food blockchain and applied it first on free-range Carrefour Quality Line Auvergne chickens. It planned to extend the technology to eight more animal and vegetable product lines such as eggs, cheese, milk, oranges, tomatoes, salmon and ground beef steak before the end of 2018.

The move was part of the retailer's implementation of the five-year Carrefour 2022 transformation plan. Carrefour intends to expand the solution to all its brands worldwide across 12,000 stores in 22 countries.

In its efforts to boost traceability and efficiency of its operations, Carrefour also joined IBM's blockchain-based Cloud network, IBM Food Trust, in October last year.

Other firms that are part of IBM Food Trust include Topco Associates, Wakefern, BeefChain, Dennick Fruit Source, Scoular, and Smithfield.

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