you should already be rich enough to participate in this puzzle.
So, honestly speaking, this puzzle was made by a rich person for rich people—the rich will get richer, and the poor will get poorer. Right?

Yep... Or maybe you manage to use vast.ai for free by hacking their system—exploiting 3,000 GPUs, stolen credit cards, or even the puzzle creator himself, as you’ve already written somewhere. The problem is, you could end up in prison. It’s better to just go fishing.

If still not worked...