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Re:Nvidia announces mining GPUs, cuts the hash rate of RTX-3... by hedora on Thursday February 18, 2021 @11:12PM (#26189608)
> does Visa offer distributed consensus and verifiable transactions

Yes. You sign one receipt at the store with a security camera pointing at you, and are handed a second, matching receipt by the vendor.

Re:Nvidia announces mining GPUs, cuts the hash rate of RTX-3... by astrange on Thursday February 25, 2021 @05:48AM (#26261660)
Btw, you don't actually do that anymore. They dropped the signature requirement.