Satoshi Nakamoto is inventor of the Bitcoin protocol, publishing a paper outlining it via the Cryptography Mailing List on November, 1 2008.

He then released the first version of the Bitcoin software client in 2009 and participated with others on the project via mailing lists until he finally began to fade from the community toward the end of 2010.

Nakamoto worked with people on the open source Bitcoin team but took care never to reveal anything personal about himself. The last anyone heard from him was in the spring of 2011, when he said that he had moved on to other things.

But he was Japanese, right?

Satoshi means clear thinking, quick witted, wise. Naka can mean medium, inside or relationship. Moto can mean origin or foundation.

Those things would all apply to the person who founded a movement by designing a clever algorithm. The problem, of course, is that each word has multiple possible meanings.

It is not known for sure whether Satoshi Nakamoto was Japanese or not. In fact, its rather presumptuous to assume that he was actually a he. Allowing for the fact that this could have been a pseudonym, he could have been a she, or even a they.

Does anyone know whoNakamoto was?

No, but the detective techniques that people use when guessing are sometimes even more intriguing than the answer. The New Yorkers Joshua Davis believed that Satoshi Nakamotowas Michael Clear, a graduate cryptography student at Dublins Trinity College.

He arrived at this conclusion by analyzing 80,000 words of Nakamotos online writings and searching for linguistic clues. He also suspected Finnish economic sociologist and former games developer Vili Lehdonvirta. Both have denied being Bitcoins inventor.Michael Clear publicly denied being Satoshi at the 2013 Web Summit.

Anonymous group of people

Adam Penenberg at FastCompany argued instead that Nakamoto may actually have been three people: Neal King, Vladimir Oksman and Charles Bry. He figured this out by typing unique phrases from Nakamotos Bitcoin paper into Google to see if they were used anywhere else. One of them, computationally impractical to reverse, turned up in a patent application made by these three for updating and distributing encryption keys. The bitcoin.org domain name originally used by Satoshi to publish the paper had been registered three days after the patent application was filed. It was registered in Finland, and one of the patent authors had traveled there six months before the domain was registered. All of them deny it.

In any case, when bitcoin.org was registered on August 18th 2008, the registrant actually used a Japanese anonymous registration service and hosted it using a Japan-based ISP. The registration for the site was only transferred to Finland on May 18th 2011, which weakens the Finland theory somewhat. Others think that it was Martii Malmi, a developer living in Finland who has been involved with bitcoin since the beginning and developed its user interface.

A finger has also been pointed at Jed McCaleb, lover of Japanese culture and fomer resident of Japan. McCaleb created troubled bitcoin exchange Mt. Gox. He also co-founded industry startups Ripple and Stellar.

Another theory suggests that computer scientists Donal OMahony and Michael Peirce are Satoshi based on a paper they authored concerning digital payments along with Hitesh Tewari, based on a book that they published together. OMahony and Tewari also studied at Trinity College, where Michael Clear was a student.

Israeli scholarsDorit Ron and Adi Shamir of the Weizmann Institute retracted allegations made in a paper suggesting a link between Satoshi and Silk Road, the black market web site that was taken down by the FBI in October 2013. They had suggested a link between an address allegedly owned by Satoshi and the site. Security researcherDustin D. Trammell owned the address, and disputed claims that he was Satoshi Nakamoto.

In May 2013, Internet pioneer TedNelson threw another hat into the ring: Japanese mathematicianProfessor Shinichi Mochizuki, although he admits that the evidence is circumstantial at best.

In February 2014, Newsweeks Leah McGrath Goodman claimed to have tracked downthe real Satoshi Nakamoto. Dorian S. Nakamoto has since denied he knows anything about bitcoin, eventually hiring a lawyer and releasing an official statement to that effect.

No, Satoshi Nakamoto is not a Japanese man living in California.

Hal Finney, Michael Weber, Wei Dai and several other developers were among those who are periodically named in media reports and online discussions as potential Satoshi Nakamoto candidates.A group of forensic linguistics experts from Aston Universitybelieve the real creator of bitcoin is Nick Szabo, based upon analysis of the Bitcoin whitepaper.

Dominic Frisby, a comedian and writer, also suggests that bit gold creatorSzabo was the most likely candidate to be Satoshi in hisbook, Bitcoin: The Future of Money. His detailed analysis involved thelinguistics of Satoshis writing, judging the level of technical skill in C++and evenSatoshis likely birthday.

In Nathaniel Poppers book, Digitial Gold, released in May 2015, Popper reveals that in a rare encounter at an event Szabo denied that he was Satoshi.

In early December 2015,reports by Wired and Gizmodotentativelyclaimed to have identified Nakamoto as Australian entrepreneur Craig S Wright.WIREDcited an anonymous source close to Wright who provided a cache of emails, transcripts and other documents that point to Wrights role in the creation of bitcoin.Gizmodocited documents sourced from someone claiming to have hacked Wrights business email account as well as efforts to interview individuals close to him.The idea that the Wright-Satoshi connection is nothing but a hoax has been floated byobservers, though.

What is known?

One thing that is known, based on interviews with people that were involved at an early stage in the development of bitcoin, is that Satoshi Nakamoto thought Bitcoin out very thoroughly. His coding wasnt conventional, according to core developer Jeff Garzik, in that he didnt apply the same rigorous testing expected from a classic software engineer.

How rich is he?

An analysis by Sergio Lerner, an authority on Bitcoin and cryptography, suggests that Satoshi mined many of the early blocks in the network, and that he had around 1 million BTC.

What is he doing now?

No one knows what Satoshi is up to, but one of the last emails he sent to a software developer, dated April 23 2011, said Ive moved on to other things. Its in good hands with Gavin and everyone.

Did he work for the government?

There are rumors, of course. The obvious question would be why one of the three-letter agencies would be interested in creating a cryptocurrency that would subsequently be used as an anonymous trading mechanism, causing senators and the FBI alike to wring their hands about potential terrorism and other criminal endeavors.

Perhaps it doesnt matter. Core developer Jeff Garzik puts it succinctly. Satoshi published an open-source system for the purpose that you didnt have to know who he was, and trust who he was, or care about his knowledge, he said. Open source code makes it impossible to hide secrets. The source code spoke for itself, Garzik added. Moreover, it was smart to use a pseudonym, he argues, because it forced people to focus on the technology itself rather than on the personality behind it. At the end of the day, bitcoin is now far bigger than Satoshi Nakamoto.

Having said that, if the real Satoshi Nakamoto is out there get in touch!

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Satoshi Nakamoto - CoinDesk