How is maintaining a simple registry a "very complicated" task. Secretaries of State in every state do this. This is the kind of nuts and bolts operations that governments are actually equipped to handle.
Oh, you were complaining about the parenthetical statement where I suggested my ideal use would be for it to go to the arts?
That's fine, it's a parenthetical because I don't think it would survive the actual proposal because of concerns like yours. I think the US government is able to do a decent job of funding the arts, but I'm aware a lot of people don't agree, so I'd definitely expect that in the end the funds would just pay for the administration of the program itself, and the excess would go into the treasury and general fund.