LONDON >> An Australian man long rumored to be associated with the digital currency Bitcoin has publicly identified himself as its creator, a claim that would end one of the biggest mysteries in the tech world.

BBC News said Monday that Craig Wright told the media outlet he is the man previously known by the pseudonym Satoshi Nakamoto. The computer scientist, inventor and academic said he launched the currency in 2009 with the help of others.

Wright made similar claims to the Economist magazine, which said on its website it still has “nagging” questions about Wright’s claim. He also asserted his role in a lengthy blog post.

The founder’s identity has been shrouded in uncertainty, and the media’s inability to pinpoint the person responsible has led to a series of investigations. Last year, some reports claimed Wright was the founder and had used a false name to mask his identity.

Wright told the BBC he had decided to make his identity known to stop the spread of “misinformation” about Bitcoin.

“I didn’t take the decision lightly to make my identity public and I want to be clear that I’m doing this because I care so passionately about my work and also to dispel any negative myths and fears,” he said.

Wright said he believes that Bitcoin and blockchain, the technical innovation that makes the currency possible, “can change the world for the better.”

He added that he would now be able to release his research and academic work to help people understand the potential of Bitcoin.

Bitcoin is designed for secure financial transactions that require no central authority — no banks, no government regulators. That makes it attractive to off-the-grid types such as libertarians, people who want to evade tax authorities, and criminals, even though Bitcoin doesn’t guarantee anonymity, since it documents every transaction in a public forum.

According to the BBC, Wright supported his claim to being the founder by signing digital messages using cryptographic keys used during the early days of Bitcoin.

If Wright is the founder, he is likely a very wealthy person. The person going by the pseudonym Nakamoto is believed to have amassed about 1 million Bitcoins, which would be worth about $450 million if converted to cash, the BBC says.

Jon Matonis, one of the founding directors of the Bitcoin Foundation, which says it helps support the use of the currency, told the BBC he is convinced that Wright is who he claims to be and is responsible for a brilliant achievement.

The hunt for Bitcoin’s founder had become a mission for some journalists. Attention focused for a time on a Finnish sociologist, a Japanese math whiz and a Japanese-American engineer.

In December, the technology magazine Wired and the website Gizmodo both published lengthy investigations based on documents and emails that concluded Wright was probably the man behind the pseudonym. He was living in an upscale suburb of Sydney at the time.

The reports were circumstantial and contained no proof. But Wright’s new statements, and his use of Nakamoto’s own encrypted signature, known as a PGP key, may have confirmed his role.

He also spoke to GQ magazine and the London Review of Books.