Jack Dorsey, CEO of Twitter, recently said that he thinks Bitcoin It will become the only global currency, something that Apple co-founder Steve Zuzniak hopes will happen.

“I support what Jack Dorsey said, I don’t necessarily think it’s going to happen but because I want it to be,” Wozniak told CNBC on Monday.

Wozniak bought bitcoin when it was at $700, which means about $6,700 less in terms of what the coin has been trading for recently, according to data from CoinDesk.

He recently sold all but just one bitcoin, saying he only wanted to try out the technology and not be an investor.

Read:HEX fraud project escapes with investors’ money estimated at more than 7 million dollars

While Wozniak said he might not necessarily believe what Dorsey predicted, he still called it “pure” Bitcoin.

“Bitcoin is defined mathematically, there is a certain amount of bitcoin, there is a way it is distributed… it is pure and there is no human being working, no company that just works… it grows and grows… and it keeps on living, and that to me says something ‘natural and nature is more important than all. Our human agreements. So he told CNBC.

The actual currency is not actually issued by a central authority, unlike traditional currencies such as the US dollar. Instead, there is a complex and dedicated mathematical foundation on the blockchain, the technology that embraces Bitcoin. The Bitcoin network is maintained by a number of actors which is why it is often called decentralized.

Wozniak founded Apple with Steve Jobs in 1976 and was behind the launch of the company’s first personal computers. He spoke to CNBC at an event at the Money 20/20 conference in Amsterdam, the Netherlands, hosted by Feedzai.

There are now over 1,000 cryptocurrencies, but Wozniak said that only Bitcoin remains “pure” because others have had to abandon some of the criteria that make Bitcoin what it is, such as decentralization.

Read:For these reasons, the value of the BNB cryptocurrency has increased by more than 75 percent

He said, “Only Bitcoin is pure digital gold… and I strongly support that. All the others tend to give up some of the bitcoin standards. For example, it is completely decentralized and has no central control. This is the first thing they have to give up in order to try to have a business model.”