No one knows who Satoshi Nakamoto is. It is the pseudonym behind the Bitcoin white paper of October 2008 and the network launched in January 2009. Hal Finney, Nick Szabo, Adam Back, Peter Todd and Dorian Nakamoto are often named; all have denied it. A UK court ruled in 2024 that Craig Wright is not Satoshi.
Satoshi Nakamoto is the name on the Bitcoin white paper and on the first version of the Bitcoin software. The person or people behind it have never been identified. Journalists and researchers have named many candidates over the years. One man who claimed the title, Craig Wright, lost in court.
This article sets out what is on the public record, the five people named most often, why the court ruled against Craig Wright and how anyone could actually prove they are Satoshi. If Bitcoin itself is new to you, start with our guide to what Bitcoin is.
Who is Satoshi Nakamoto?
No one knows. Satoshi Nakamoto is the pseudonym of the person or group who wrote the Bitcoin white paper, launched the network in January 2009 and led its early development. Satoshi never shared personal details that anyone could check.
Satoshi wrote in English and worked through email and online forums. The very first block of the blockchain, called the genesis block, carries a headline from the British newspaper The Times: “Chancellor on brink of second bailout for banks”. Some people read that as a clue to where Satoshi lived or why Bitcoin was built. It proves neither.
Hal Finney, who swapped emails with Satoshi in January 2009, later wrote that he thought he was dealing with “a young man of Japanese ancestry who was very smart and sincere”. That was his impression, not evidence.
What do we actually know about Satoshi?
We know what Satoshi did and when, because the messages, the code and the blocks are public. The UK High Court set out the early timeline in its 2024 judgment in COPA v Wright, and the dates below match that record and the blockchain itself.
| Date | What happened |
|---|---|
| August 2008 | Satoshi acquires the bitcoin.org domain. On 20 August, Satoshi emails cryptographer Adam Back about a draft of the white paper. |
| 31 October 2008 | Satoshi announces the white paper, “Bitcoin: A Peer-to-Peer Electronic Cash System”, on the Cryptography Mailing List. |
| 3 January 2009 | Satoshi creates block 0, the genesis block (timestamped 18:15 UTC). |
| 8 January 2009 | Satoshi releases the first version of the Bitcoin software. |
| 12 January 2009 | The first Bitcoin transaction: Satoshi sends 10 BTC to Hal Finney (block 170). |
| 22 May 2010 | Laszlo Hanyecz reports trading 10,000 bitcoins for two pizzas, now remembered as Bitcoin Pizza Day. |
| 12 December 2010 | Satoshi’s last public post on the Bitcointalk forum. |
| April 2011 | Satoshi hands the lead developer role to Gavin Andresen and, on 26 April, sends him the network alert key. |
| 7 March 2014 | Satoshi’s old P2P Foundation account posts “I am not Dorian Nakamoto.” Who wrote it has never been confirmed. |
Satoshi’s last public post was in December 2010, and the last known contact with other developers was in April 2011. The Satoshi Nakamoto Institute, which archives Satoshi’s known writing, lists one later post: the 2014 message above. The archive itself says its authenticity “demands scrutiny”.
Who are the 5 people most often named as Satoshi?
Five names come up again and again: Hal Finney, Nick Szabo, Adam Back, Peter Todd and Dorian Nakamoto. Each has denied being Satoshi, and none has been proven to be. Here is why each one is named and what each has said.
1. Hal Finney
Hal Finney was a cryptographer and one of Bitcoin’s first users. He received the first Bitcoin transaction, 10 BTC from Satoshi, on 12 January 2009. In 2013 he wrote that he was probably the first person besides Satoshi to run the software, and that he spent the following days reporting bugs to Satoshi by email.
Suspicion grew in 2014, when Forbes reported that Finney lived in Temple City, California, the same town as Dorian Nakamoto. Finney denied being Satoshi. He had been diagnosed with ALS in August 2009 and died in 2014. In his own account of Bitcoin’s early days, he describes Satoshi as a separate person he wrote to.
2. Nick Szabo
Nick Szabo described smart contracts in a 1996 essay, long before blockchains existed. Before Bitcoin, he also proposed “bit gold”, a design for digital money that the UK High Court listed among Bitcoin’s forerunners.
Those ideas are close to Bitcoin’s, which is why his name comes up so often. Szabo has denied being Satoshi. In a 2014 email to the author Dominic Frisby, he said Frisby had got it wrong in naming him as Satoshi.
3. Adam Back
Adam Back is a cryptographer who created Hashcash, a proof-of-work system that the Bitcoin white paper cites. The court record shows that Satoshi emailed him on 20 August 2008 to check that reference in a draft of the white paper. Back later founded the Bitcoin company Blockstream.
In April 2026, a New York Times investigation by John Carreyrou argued that Back is Satoshi. It relied on circumstantial clues, such as shared phrases and interests and the timing of messages. Back denied it, as he had after the 2024 HBO documentary also raised his name.
4. Peter Todd: did HBO unmask Satoshi?
No. The HBO documentary Money Electric: The Bitcoin Mystery, directed by Cullen Hoback, premiered on 8 October 2024 and argued that Peter Todd, a Canadian Bitcoin developer, is Satoshi. Todd denied it. As CNN reported the day after the premiere, he said: “I am not Satoshi Nakamoto.”
The film’s case rested on circumstantial clues. These included a public exchange in which Todd seemed to correct Satoshi, the fact that Satoshi’s final message came three days later, and spelling habits. Fortune’s reviewer called the theory “almost certainly wrong”.
5. Dorian Nakamoto
On 6 March 2014, Newsweek named Dorian Prentice Satoshi Nakamoto, a Japanese-American engineer living in Temple City, California, as Bitcoin’s creator. The shared name was the obvious hook for the story.
He denied it. In a statement that Newsweek later added to its article, he said: “I did not create, invent or otherwise work on Bitcoin. I unconditionally deny the Newsweek report.” On 7 March 2014, Satoshi’s old P2P Foundation account posted “I am not Dorian Nakamoto”, although no one has confirmed who wrote that post.
Is Craig Wright Satoshi Nakamoto?
No. The UK High Court ruled in 2024 that Craig Wright is not Satoshi Nakamoto. Wright had publicly claimed since 2016 that he created Bitcoin.
The case, Crypto Open Patent Alliance (COPA) v Wright, was heard in London in February and March 2024. At the end of the trial on 14 March 2024, Mr Justice Mellor announced his decision. The written judgment followed on 20 May 2024 and declared that Wright is not:
- the author of the Bitcoin white paper;
- the person who adopted or operated under the pseudonym Satoshi Nakamoto;
- the person who created the Bitcoin system;
- the author of the first versions of the Bitcoin software.
The judge found that Wright “lied to the Court extensively and repeatedly”, and that most of those lies related to documents he had forged to support his claim. In July 2024 the court ordered him not to sue or threaten others on the basis of the claim, and not to publish statements repeating it. In December 2024 he was found in contempt of court for breaching that order by starting a new claim. He received a 12-month prison sentence, suspended for two years.
Some early supporters had believed him. In 2016, Gavin Andresen, to whom Satoshi had handed the lead developer role in 2011, wrote that a private demonstration had convinced him that Wright was Satoshi. That view dates from 2016. The court examined those private sessions in 2024 and still ruled that Wright is not Satoshi.
How many bitcoins does Satoshi own?
No one knows for sure. The estimate quoted most often comes from researcher Sergio Demian Lerner. He found a pattern in early blocks, known as the “Patoshi” pattern, suggesting that a single miner, widely assumed to be Satoshi, mined close to 1.1 million BTC in 2009 and 2010.
That would be about 5% of the 21 million bitcoins that can ever exist. Lerner’s 2019 analysis found that the rewards from 99.9% of the blocks in the pattern had never been spent. It remains an estimate: nothing on the blockchain names the owner of those coins.
We do not quote a dollar value here, because it changes every day. For today’s figure, see the Bitcoin price and payment options.
How could someone prove they are Satoshi?
The strongest proof would be cryptographic, not documents or stories. Every bitcoin address is controlled by a private key, and Bitcoin software can sign a message with that key so that anyone can check the signature.
Satoshi mined the coins from block 9 that were sent to Hal Finney in the first transaction. A new, public signature made with the key behind early coins like those would be strong evidence. Even then, it would show control of a key, not a name.
Wright relied instead on private “signing sessions” in 2016 and on documents that the court found to be forged. To learn how key pairs work, read public keys vs private keys.
Does it matter who Satoshi is?
For how Bitcoin works day to day, no. Nobody owns the Bitcoin network. Its rules are enforced by the software its users run, not by its creator, and the network has kept running since Satoshi stepped back in 2011. To see how that works, read how Bitcoin works.
It matters in other ways. If the estimate is right, the early coins linked to Satoshi are a large holding compared with Bitcoin’s total supply. The mystery also attracts fraud. Be wary of anyone who claims to be Satoshi, sells “Satoshi’s coins” or promises giveaways in Satoshi’s name. Read how to protect yourself from fraud.
Satoshi’s rules live on in Bitcoin itself, from the 21 million limit to the Bitcoin halving that cuts the number of new coins about every four years. So does the name: the smallest unit of bitcoin, 0.00000001 BTC, is called a satoshi. Read what a satoshi is or the short glossary entry for the satoshi unit.
Frequently asked questions
Sources
- High Court of England and Wales: Crypto Open Patent Alliance v Wright [2024] EWHC 1198 (Ch), judgment of 20 May 2024 (checked September 2026)
- High Court of England and Wales: Crypto Open Patent Alliance v Wright [2024] EWHC 1809 (Ch), 16 July 2024 (orders after the trial) (checked September 2026)
- High Court of England and Wales: Crypto Open Patent Alliance v Wright [2024] EWHC 3316 (Ch), 20 December 2024 (contempt sentence) (checked September 2026)
- The Cryptography Mailing List: “Bitcoin P2P e-cash paper”, Satoshi Nakamoto, 31 October 2008 (checked September 2026)
- Bitcoin Core source code: chainparams.cpp (genesis block headline and timestamp) (checked September 2026)
- mempool.space block explorer: block 170, 12 January 2009 (checked September 2026)
- Bitcointalk: “Pizza for bitcoins?”, laszlo, May 2010 (checked September 2026)
- Satoshi Nakamoto Institute: archive of Satoshi’s forum posts (checked September 2026)
- Satoshi Nakamoto Institute: P2P Foundation post of 7 March 2014, with authenticity note (checked September 2026)
- Hal Finney: “Bitcoin and me (Hal Finney)”, Bitcointalk, 19 March 2013 (checked September 2026)
- Forbes: Andy Greenberg on Hal Finney and Temple City, 25 March 2014 (checked September 2026)
- The New York Times: “Hal Finney, Cryptographer and Bitcoin Pioneer, Dies at 58”, 30 August 2014 (checked September 2026)
- Nick Szabo: “Smart Contracts: Building Blocks for Digital Markets”, 1996 (Satoshi Nakamoto Institute library) (checked September 2026)
- Dominic Frisby: Bitcoin: The Future of Money? (Unbound, 2014), chapter “Who is Satoshi Nakamoto?” (checked September 2026)
- The New York Times: John Carreyrou and Dylan Freedman, “Who Is Satoshi Nakamoto? My Quest to Unmask Bitcoin’s Creator”, 8 April 2026 (checked September 2026)
- HBO Max: Money Electric: The Bitcoin Mystery (Cullen Hoback, 2024) (checked September 2026)
- Fortune: Jeff John Roberts on the HBO documentary and Peter Todd, 8 October 2024 (checked September 2026)
- CNN: “‘I am not Satoshi Nakamoto’: Subject of HBO documentary denies he invented bitcoin”, 9 October 2024 (checked September 2026)
- Newsweek: “The Face Behind Bitcoin”, 6 March 2014, with Dorian Nakamoto’s statement (checked September 2026)
- Sergio Demian Lerner (Bitslog): “The Return of the Deniers and the Revenge of Patoshi”, 16 April 2019 (checked September 2026)
- bitcoin.org: Frequently asked questions (checked September 2026)
- Bitcoin developer documentation: signmessage (checked September 2026)
