system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:How can Banksy do huge projects (like Dismaland, having "residency" in NYC, etc) without anyone knowing who he is?
gpt
Disclaimer: Am not Banksy, no idea how he operates.

However, it's not that hard to have business relationships without revealing who you are. Set up a corporation named 'Completely Boring Entertainment Investments Limited' and have someone trustworthy be a puppet director in case some journalist looks into the registration. Hire your builders, etc. under this corporations name. If you're not asking for a huge debt, nobody is going to care who the people are (and you can just make sure the director is someone respectable, if they do care) and there's no need to know Banksy is the one really organising everything.

As for the artists who actually exhibited there... well they probably did know. But they're part of the whole thing, so it's not in their interest to blow the cover.