Analysts from the Bitcoin news site Coindesk say that there is no clear source of the increase - 95% of the demand is coming from China.
EY is set to hold a major auction in Austrailia, it will sell bitcoins worth close to €11.6m which are described as confiscated "proceeds of crime" but the firm cannot say who its client is.
The sale will happen through its transactions partner Adam Nikitins, he says that it is "targeting sophisticated investors who can see the value of investing in a growing digital asset."
http://www.newstalk.com/Bitcoin-values-have-spiked--but-no-one-is-sure-why