Bitcoin's hot streak is well and truly dead.

The cryptocurrency has not been able to crack above $4,000 in three weeks just 12 months after trading at more than $12,000.

Signs show that bitcoin investors are moving toward a more traditional commodity, says Jan Van Eck, CEO of Van Eck Associates.

"I do think that Bitcoin pulled a little bit of demand away from gold last year, in 2017," Van Eck told CNBC's "ETF Edge" on Wednesday. "Interestingly, we just polled 4,000 bitcoin investors and their number one investment for 2019 is actually gold. So gold lost to bitcoin and now it's going the other way."

In the 12 months to bitcoin's peak above $20,000 in December 2017, the cryptocurrency increased in value 25 times over. Over that same stretch, gold rallied 4 percent. More than a year since bitcoin's peak, it's down 82 percent, while gold is up 2.5 percent.

It may be difficult for the tide to turn back to bitcoin and away from gold from here, says Tim Seymour, founder and chief investment officer of Seymour Asset Management.

"Not only have we lost all liquidity on the underlying [commodity] but truly outside of the existential blockchain argument, it's been very difficult to argue store of value which is really what we started hearing about," Seymour said on "ETF Edge" on Wednesday. "Gold is a store of value and there's no disputing that."