The holder of the QR code can't be locked out of having the QR code. | Hacker News

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DarylZero on Dec 14, 2021 | parent | context | favorite | on: More than you want to know about gift cards

The holder of the QR code can't be locked out of having the QR code.

throwaway413 on Dec 14, 2021 [–]

I am not sure I buy into your statement here. I believe there is a way.

DarylZero on Dec 15, 2021 | [–]

The blockchain itself is literally the way. That's why it's there. If you take it out, double spends.

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