> they don’t want other people claiming they’re Banksy, and they want to remain anonymous. Sounds like a perfect case for public key cryptography, although it

> they don’t want other people claiming they’re Banksy, and they want to remain anonymous. Sounds like a perfect case for public key cryptography, although it doesn't help with duplicates - but duplicates help his work sell anyway. Would be interesting to see how it could be applied to something visual that is reproduced in non-pixel perfect ways.