does nobody else get it or kind of think its interesting?
I'm pretty sure its a novel idea at least.
At first I thought you were going to say the contestants would have to race to a physical location to scan a private key of something. I think that's a lot more interesting.
The way you are describing it, it sounds like everyone would basically have an equal chance of being the first to send the transaction. There is no skill involved. Why not just hold a raffle?
It is only good for a movie. Doing a race like this IRL would be dangerous and people would be desperate to win breaking laws to get ahead ams driving , cycling or flying dangerously and taking risks. If you could make a virtual world to do this in that would be great and much safer.