An alternative could be online untransferable but voidable tickets, with in person payment.

Basically try to make it so money changing hands is inpractical and bears considerable risks.

As I said, the idea I posited _is_ impractical. It works fine if your band is playing small clubs and the like, but it admittedly falls apart at scale.

I see plenty of technical solutions being proposed. They might even work. Except each one seems to be exclusionary in some way or another at scale. Or they stomp on the tender feelings of libertarians, but I repeat myself.