Faithful techies think in coming decades one digital coin will be worth $500,000.
The price of a Bitcoin broke $4,000 this month. It’s up 400% in 2017, and only two years ago it stood at around $230. With 16.5 million Bitcoins the potential for 4.5 million more, the market value of Bitcoin is now whopping $72 billion. Sister currency Ethereum is worth another $32 billion.
