Every chicken it sells under its house brand comes complete with its very own life story, thanks to the wonders of blockchain software. All you need to do is scan the label with your smartphone to get all the details.

This is the same technology that serves as the backbone of Bitcoin and other cryptocurrencies. The grocery giant isn’t just trying to appeal to discriminating foodies. It wants to do whatever it can to ensure its products aren’t tainted, part of a broader industry trend that buys into the as-yet-unproven promise that blockchain can improve food safety.

Nestlé, Dole Food, Unilever, and Tyson Foods are working with their biggest customer, Walmart. Kroger and JD.com, China’s second-largest e-commerce operator, have also joined the same blockchain platform built by International Business Machines Corp. Carrefour developed its own system in-house.

“There’s no question about it, blockchain will do for food traceability what the internet did for communication,” says Frank Yiannas, Walmart Inc.’s vice president for food safety and health.

Yiannas cites estimates that for every 1 percent reduction in food-borne diseases in the U.S., the economy would benefit by about $700m from increased productivity, thanks to reduced illness and fewer days lost at work.

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