I think that bitcoin is more reliable than gold - you can transfer it from one country to another without any customs problems. Bitcoin, the heavyweight of the cryptocurrency world, has billed itself as digital gold. Bitcoin is, after all, far more volatile than gold, and still relatively unknown compared to other investment assets. Gold, on the other hand, is well established with institutional investors and has quite a bit of liquidity.
Yes, Bitcoin is by far more volatile than gold, and, to tell the truth, it is more volatile than any commodity out there. So I don't really think it, or any other cryptocurrency for that matter, can be billed as gold. In fact, it is anything but gold or digital gold because gold is the standard of value, a point of reference if you please. Bitcoin is at the other end of the range. It is amusing to see and hear when people male some analogies. I expected that after Bitcoin had lost half of its value within a month, there will be no more such nonsense, but to no avail.