it's really real and it's been proven to buy a cup of coffee with ETH it's to a very extraordinary masters but in my country there is nothing like it in starbucks
I do not think buy a cup of coffee with ETH. Because if we buy a cup of coffee we will have to transfer ETH to Starbucks' wallet. And at the expense of transferring money, I think we would lose a lot of money if we drink coffee every day