Who is Craig Wright and how likely is it that he's behind bitcoin?

Separate investigations by US tech publications suggest an Australian could be at the heart of the cryptocurrency and may even be 'Satoshi Nakamoto'. How certain are the claims - and why was he raided by police on Tuesday?

Craig Wright has been named as one of the mystery men who could be behind the cryptocurrency Bitcoin. Both Gizmodo and Wired published investigations on Wednesday alleging he was the previously anonymous founder of the currency, known by the pseudonym Satoshi Nakamoto.

But without an admission from Wright, these claims are based largely on documents that have not yet been verified. On Wednesday it also emerged the New York Times decided not to pursue the story. Reporter Nathaniel Popper tweeted that while the emails were convincing, he thought Wright "didn't match" because of his writing and personality.