When a Chinese consumer buys a package labeled "Australian beef," there's only a 50-50 chance the meat inside is, in fact, Australian beef. It could just as easily contain rat, dog, horse or camel meat – or a mixture of them all. It's gross and dangerous, but also costly.
Read more at: https://phys.org/news/2018-11-blockchain-tracking-food-safety.html#jCp