Bitcoin’s stupefying rise in 2021 has shocked market watchers as the internet currency coded by an anonymous founder rips up rule books around conventional investments to top a $US1 trillion ($1.27 trillion) market valuation.

At a record high $US58,332 over the weekend, it’s now doubled in value over less than two months and added 50 per cent in just two weeks since Tesla revealed a $US1.5 billion investment.