> The way this is already being exploited in the wild is that a scalper/scammer buys 1 ticket, then resells the same ticket multiple times. Multiple people believe they have a valid ticket, show up at the event, but only the 1st ticket works. The other people who try to use the ticket are turned away saying that their ticket has already been used.

That is one of many ways this is already exploited in the wild.

Do you have a source for this? What platform are they selling multiple copies of the ticket through, and what app are the buyers using that allows multiple buyers to receive and show the same animated barcode?