As Bitcoin breaks above the $4,500 mark, it's time to start putting on your thinking caps (or tin foil hats if you would prefer)

While the S&P 500 tech sector recovers from the Dotcom crash - taking nearly up to 17 years as the chart below shows - the rise in Bitcoin over the last five months has certainly got people talking about the B-word.

Bitcoin is currently trading at $4,574.74 and it's currently trading more than 2,000% higher than its value in 2015. Putting that into perspective, the tech buble saw stocks rose by just over 1,000% higher over the period from 1994 to 2000.

When asked if this a bubble, Blockchain's MD, Spencer Bogart comments that "short-term, maybe; long-term, definitely not".

He goes on to say it's still early days as not many people own Bitcoin or have participated in an ICO at this juncture as the reason why this is not going to be a bubble in the long-run.

You can view his interview and Bloomberg's article on this here.