Is it illegal to sell your artwork at an auction, and a criminal happens to be the one to buy it? I honestly don't know.
is the onus on an artist or on an "auction house" to vet buyers. If post sale it turns out the money was fraudulent, does the artist need to pay it back?
In crypto terms. You the artist simply put a NFT up for auction at OpenSea. You the scammer happened to purchase the artwork on OpenSea. However KYC is not well enforced, enabling for money laundering between the two wallets.
is the onus on an artist or on an "auction house" to vet buyers. If post sale it turns out the money was fraudulent, does the artist need to pay it back?
In crypto terms. You the artist simply put a NFT up for auction at OpenSea. You the scammer happened to purchase the artwork on OpenSea. However KYC is not well enforced, enabling for money laundering between the two wallets.