Security News > 2019 > April > How the Anonymous Artist Bansky Authenticates His or Her Work

Interesting scheme: It all starts off with a fairly bog standard gallery style certificate. Details of the work, the authenticating agency, a bit of embossing and a large impressive signature at the bottom. Exactly the sort of things that can be easily copied by someone on a mission to create the perfect fake. That torn-in-half banknote though? Never mind signatures,...

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https://www.schneier.com/blog/archives/2019/04/how_the_anonymo.html