In 2017, CNBC spoke to the Dutch family of five when they were in the process of liquidating their assets — from a profitable business and 2,500-square-foot house, to their shoes — and trading it all in for the popular cryptocurrency and a life on the road. 

Nearly four years and 40 countries later, Taihuttu and his family still don’t have bank accounts, a house, or all that much by way of personal possessions. All of the family’s savings remain tied up in highly volatile cryptocurrencies. 

“We stepped into bitcoin, because we wanted to change our lives,” said the 42-year-old father of three.

When the price of bitcoin collapsed in 2018, Taihuttu added more to his investment portfolio. He says he was always a firm believer that the cryptocurrency was poised for a major rebound. “I think in this bull cycle, we are going to see a minimal peak of $100,000. I won’t be surprised if it hits $200,000 by 2022.” 

The price of bitcoin reached an all-time high on Monday, as it closed in on $20,000. And some analysts say the cryptocurrency still has a lot of room to run higher. 

Mike Novogratz, CEO of investment firm Galaxy Digital, thinks this comeback rally is only just getting started. He sees bitcoin rising to $60,000 by next year. 

And Tom Fitzpatrick, global head of CitiFXTechnicals, said the charts signaled that bitcoin could reach $318,000 by December 2021, in a report meant for Citibank’s institutional clients and obtained by CNBC.