Solana is the largest of the cheap/fast networks - I’ve worked in Solana for a year - but Aptos and Sui also have solid tech.
You use Safari on your iPhone and unlock your wallet with FaceID.
Right now physical stores that take USDC are generally luxury goods marketplaces, physical art galleries, and PC hardware marketplaces.
No you can’t cancel transactions after you’ve made them, however there are escrow services that provide similar facilities for a small fee.
No it’s proof of stake so the environment is fine.
Transactions take a few seconds. They must finish within 20 seconds or they time out, and they're expected to take much less time. Here's a technical overview.[2]
The bank to Fed to bank API uses IBM MQ and ISO 20022. These are a bit dated but widely used in the financial sector. Down at the bottom, it's XML.
[1] https://www.frbservices.org/resources/fees/fednow-2023
[2] https://explore.fednow.org/resources/technical-overview-guid...
> Certificate-Based Authentication
Heh, so I can look forward to the biennial banking outage as they forget to renew their certs :-D
But in seriousness, I have some experience with x509 auth from the early days of kubernetes using it and unless the system has some robust CRL mechanisms I look forward to knowing how such a scheme will deauthorize users
Interestingly, they also seem to be doing belt-and-suspenders since the messages themselves are signed with the private key of the institution, which appears to be registered out of band from the system itself
