Australian tech entrepreneur Craig Wright told the BBC on Monday he was the creator of controversial digital currency bitcoin, ending years of speculation about a person who until now has gone by the name of Satoshi Nakamoto.

The BBC said Wright gave technical proof supporting his claim to using bitcoins known to be owned by bitcoin's creator. It said prominent members of the bitcoin community had also confirmed Wright's claim and said Wright repeated the claim to The Economist and GQ.

"I was the main part of it, but other people helped me," the BBC quoted Wright as saying.

The Economist however said it was not entirely convinced.

"Our conclusion is that Mr Wright could well be Mr Nakamoto, but that important questions remain," it said. "Indeed, it may never be possible to establish beyond reasonable doubt who really created bitcoin."

The Australian Tax Office (ATO) and police were not immediately available for comment.



A bitcoin sign on display in Sydney

In December, police raided Wright's Sydney home and office after Wired magazine named him as the probable creator of bitcoin and holder of hundreds of millions of dollars worth of the cryptocurrency, a currency which has attracted the interest of banks, speculators, criminals and regulators.

Police at the time referred all inquiries about the raids to the ATO, which said it could not comment on "any individual's or entity's tax affairs" due to legal confidentiality.

The treatment of bitcoins for tax purposes in Australia has been the subject of considerable debate. The ATO ruled in December 2014 that cryptocurrency should be considered an asset, rather than a currency, for capital gains tax purposes.

Unlike traditional currency, bitcoins are not distributed by a central bank or backed by physical assets like gold, but are "mined" by users who use computers to calculate increasingly complex algorithmic formulas.

Bitcoin experts say that unmasking Satoshi Nakamoto would be significant for the industry. Not only would the proven founder likely hold some sway over the future of the bitcoin protocol, but Nakamoto may also hold enough bitcoin to influence its price.

As an early miner of bitcoins, Nakamoto is sitting on about 1mn bitcoins, worth more than $400mn at present exchange rates, according to bitcoin expert Sergio Demian Lerner.