Bloomberg said Denmark’s virtual-currency bourse says it will become the world’s first to allow clients to swap dollars and euros for NXT, the fourth-largest crypto-payment form which until now has only been traded via bitcoin.

“NXT is a strong currency and a potential challenger to Bitcoin as a leading virtual currency,” Chief Executive Officer Ronny Boesing told the news-agency. “In terms of safety, it’s perceived as being as safe as bitcoin, if not safer.”