what do you think about Pow endorsements?

https://pippellia.com/pippellia/Social+Graph/Navigating+the+social+graph#PoW+endorsement

tldr;

- Alice pays 10$ to a miner
- Miner mines a note that reference Alice's npub
- Alice gets her checkmark so she can defend her audience from impersonators 

 I would have to trust the miner and I shouldn’t need to. 

 worst case is u lose 10$.

It's like a restaurant.