By Tobias Carroll There’s an awful art behind a successful Ponzi scheme. Bernie Madoff’s massive defrauding of investors is perhaps the most well-known example, but Ponzi schemes have abounded in recent years, centered around nearly anything that one can invest in — including works of art and movies in production. And given the applicability of Ponzi schemes, it was probably inevitable that we’d start to see crypto-themed scams arise. The good news — in the sense that anything involved in such a scam can be considered “good news” — is that law enforcement is beginning to look into some example…