Cross border payment with QR codes are already a thing in plenty of Southeast and East Asian countries. Crypto and stablecoins aren't needed (nor wanted, due to money laundering risks).
replyHow many transactions can you ran per second on major coins like BTC?
replyNo, for example Argentinian tourists use Belo[1] for paying in Brazil. No need for credit cards.
reply"crypto and stablecoins will destroy them sooner or later."
replyLOL!
I meant digital dollar and digital euro, you won't need Visa and Mastercard anymore.
replyDollar is already "digital", and has been for the last 50 years or so.
replyI meant this https://www.federalreserve.gov/central-bank-digital-currency..., this https://en.wikipedia.org/wiki/Digital_euro and this https://en.wikipedia.org/wiki/Digital_renminbi
replyIt's just buzzwordy bullshit. The European system is just a classic credit/debit system. The Chinese system is a bit more sophisticated, with offline capability and smart contracts.
replyBut it doesn't use any distributed proof-of-work/stake stuff.