In the well-heeled Chinese city of Shenzhen, shoppers are painfully aware of the food safety scandals that have emerged in recent years. Gangs have been caught red-handed selling tons of frozen meat that was more than 40 years old, and hundreds of people have previously been sickened after eating pork laced with steroids to help pigs grow faster.

It's carefully sourced, steroid-free, unexpired premium pork. No really, it is. Just scan that QR code. (Photo: VeChain)