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Comment by mrkramer | Hacker News Reader

Pix is for domestic use right? So tourists who come to Brazil still use Visa and Mastercard as well as Brazilian tourists who travel abroad. Visa and Mastercard are companies of the past, crypto and stablecoins will destroy them sooner or later.

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No, for example Argentinian tourists use Belo[1] for paying in Brazil. No need for credit cards.

[1] https://www.belo.app/en-us/ar/

How many transactions can you ran per second on major coins like BTC?

Depends on what you mean, if using batching technologies like Lightning Network it is theoretically unlimited.

If you mean on the globally replicated and stored forever blockchain, I think it's 50/s or something like that.

I keep hearing those marvels about how lightning network solves everything and gives everyone a pony, but it is currently estimated to perform about 200k transactions per day.

Pix achieves literally a thousand times that.

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).

"crypto and stablecoins will destroy them sooner or later."

LOL!

I meant digital dollar and digital euro, you won't need Visa and Mastercard anymore.

Dollar is already "digital", and has been for the last 50 years or so.

I 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

It'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.

But it doesn't use any distributed proof-of-work/stake stuff.

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