Banksy x Hirst

Doing a bit of research on contemporary art, found this piece of old news:

Title: “Keep it Spotless”
Artist: Banksy x Damien Hirst
Date: Valentine's Day, 2008
Venue: Sotheby’s NYC
Cause: (AUCTION) RED for AIDS relief
Sold: $1,870,000 USD

Overheard Hirst:
"Deface my art. Sell millions. For the good cause. Fooking Brilliant Idea!"...
"What can you do with my Sharks? Mate."