The Winklevoss twins may say that bitcoin resembles "gold 2.0," but CEO of Euro Pacific Capital and Peter Schiff says the somewhat mysterious online currency more closely resembles tulip mania 2.0.

"A bubble is a bubble," he said. "And there's a bubble in bitcoins."

Schiff was responding to comments made by Tyler and Cameron Winklevoss, who have invested a great deal in bitcoins and are attempting to start a bitcoin exchange-traded fund. (They also happen to be well-known for suing Mark Zuckerberg over the creation of Facebook.)

On Tuesday's "Squawk Box," Cameron Winklevoss said that "some definitely view it as gold 2.0," adding, "In terms of a store of value, it definitely has the properties of gold, and people are viewing it that way."

(Read more: Winklevosses: Bitcoin worth at least 100 times more)

But on the Tuesday episode of "Futures Now." Schiff, a longtime investor in gold, literally laughed at the comparison.

"I don't see bitcoins as an alternative to gold," he said. "If anything, [the creators of bitcoin are] modern-day alchemists, but you can't make gold digitally. It's no better than a fiat currency."

Schiff said that what he does see in the peer-to-peer currency—whose value has risen from $13.50 in January to $375 on Tuesday—is a bubble.