Bitcoin Institute

Satoshi Nakamoto

Satoshi Nakamoto is the pseudonym used by the individual or group who created Bitcoin. Their true identity has never been confirmed.

White Paper: On August 20, 2008, Satoshi emailed Adam Back about a new electronic cash system, marking the earliest known communication about what would become Bitcoin. On October 31, 2008, Satoshi published “Bitcoin: A Peer-to-Peer Electronic Cash System” to the cryptography mailing list at metzdowd.com. The paper described a decentralized digital currency system using proof-of-work to achieve consensus without a trusted third party.

Launch: On January 3, 2009, Satoshi mined the genesis block (Block 0), embedding the text “The Times 03/Jan/2009 Chancellor on brink of second bailout for banks” from the front page of The Times newspaper. On January 8, 2009, Bitcoin v0.1 was released publicly. On January 12, 2009, Satoshi sent 10 BTC to Hal Finney in Block 170 — the first person-to-person Bitcoin transaction.

Development and Communication: Satoshi was active across multiple platforms: the cryptography mailing list, the bitcoin-list mailing list on SourceForge, the BitcoinTalk forum (which Satoshi and Martti Malmi created), the P2P Foundation forum, and private email correspondence. Satoshi communicated directly with Adam Back, Wei Dai, Hal Finney, James A. Donald, Ray Dillinger, Dustin Trammell, Martti Malmi, Mike Hearn, Gavin Andresen, Laszlo Hanyecz, Jeff Garzik, and others. Over the course of 2009–2010, Satoshi authored hundreds of forum posts and emails explaining Bitcoin’s design, responding to technical questions, and coordinating development.

Transition and Disappearance: In late 2010, Satoshi began transferring project responsibilities to other developers. Gavin Andresen was granted commit access to the Bitcoin repository and the network alert key. Satoshi’s final known public post on BitcoinTalk was on December 12, 2010. In private email, Satoshi continued communicating with a small number of developers into early 2011. On April 23, 2011, Satoshi wrote to Mike Hearn: “I’ve moved on to other things. It’s in good hands with Gavin and everyone.” On April 26, 2011, Satoshi sent what is believed to be the final known email — to Gavin Andresen — handing over the alert key and writing: “I wish you wouldn’t keep talking about me as a mysterious shadowy figure.” No verified communication from Satoshi has been recorded since.

Profile: Satoshi’s P2P Foundation profile listed a date of birth of April 5, 1975, and a location of Japan. These details are unverified and widely considered to be fictitious. Satoshi wrote in fluent English with conventions consistent with British or Commonwealth usage. Analysis of posting timestamps has suggested various time zones, but no conclusive determination of location has been made.

Development Environment: Bitcoin v0.1 was developed on Windows using Microsoft Visual C++ 6.0 and MinGW. The initial release was Windows-only, distributed as a .rar archive. Satoshi was primarily a Windows developer; from late 2009, with help from Martti Malmi, he began porting Bitcoin to Linux (Ubuntu). He personally set up Ubuntu test environments and debugged deep issues (pthread_cancel, MSG_DONTWAIT, Berkeley DB, GTK thread safety), but was unfamiliar with Linux conventions such as config file formats, daemon switch naming, and startup scripts. He wrote on the forum: “That’s great because that’s where I have less expertise” (December 2009, regarding Linux/FreeBSD testing). In a December 2010 email to Gavin Andresen, he described Gavin as “technically much more Linux capable than me.” Mac support was entirely contributed by Laszlo Hanyecz; Satoshi had no Mac to test on. BSD knowledge was conceptual (socket origins) rather than hands-on. Despite these gaps, Satoshi steadily expanded cross-platform support throughout 2010, incorporating community-contributed patches for Linux, macOS, and FreeBSD.

Bitcoin Holdings: Research by blockchain analysts has identified a pattern of early mining activity attributed to a single entity, often called the “Patoshi” pattern, believed to be Satoshi. The bitcoins mined during this period — estimated at approximately 1.1 million BTC — have never been moved.

Related Entries

352 entries

Riski Wiki

Satoshi's final known emails — farewell to Hearn, alert key to Andresen

Satoshi Nakamoto ↔ Gavin Andresen, Mike Hearn

Satoshi Nakamoto's final known private communications: on April 23, 2011, he told Mike Hearn 'I've moved on to other things. It's in good hands with Gavin and everyone.' Three days later, on April 26, he sent his last known email to Gavin Andresen, transferring the network alert key and writing 'I've moved on to other things and will probably be unavailable.'
Wired

"The Rise and Fall of Bitcoin" — Wired's landmark feature on Bitcoin's first boom and bust

Benjamin Wallace ↔ Satoshi Nakamoto, Gavin Andresen, Laszlo Hanyecz, Jeff Garzik, Hal Finney, Wei Dai, Nick Szabo, Stefan Thomas, Dan Kaminsky, Amir Taaki

Benjamin Wallace's feature in Wired magazine — one of the earliest major mainstream articles on Bitcoin. It traced the arc from Satoshi's whitepaper through the mining boom, the Mt. Gox hack, and the community's growing pains, and closed with Jeff Garzik's iconic line: 'We really don't care.'
Bitslog (Sergio Lerner)

Sergio Demian Lerner identifies the 'Patoshi' mining pattern — ~1 million BTC linked to Satoshi

Sergio Demian Lerner ↔ Satoshi Nakamoto

Bitcoin researcher Sergio Demian Lerner published 'The Well Deserved Fortune of Satoshi Nakamoto,' identifying a distinctive mining pattern (later named 'Patoshi') in Bitcoin's earliest blocks. The analysis linked approximately 22,000 blocks (~1.1 million BTC) to a single miner presumed to be Satoshi Nakamoto. Virtually none of these coins have ever been spent.
Bitslog (Sergio Lerner)

Sergio Demian Lerner discovers a second fingerprint in Satoshi's mining — the nonce LSB pattern

Sergio Demian Lerner ↔ Satoshi Nakamoto

Five months after his initial ExtraNonce analysis, Lerner discovered that Satoshi's nonce values had a highly non-random least significant byte (LSB) distribution — restricted to values [0..9] and [19..58], approximately 50 out of 256 possible values. This second fingerprint, independent of ExtraNonce, proved Satoshi used custom mining software with parallelized nonce space partitioning.
LessWrong

Wei Dai's retrospective statements on Satoshi Nakamoto and b-money

Wei Dai ↔ Satoshi Nakamoto

Wei Dai's reflections on Satoshi Nakamoto and on why b-money was never implemented, from a LessWrong Q&A thread. Dai stated that Satoshi 'didn't even read my article before reinventing the idea himself,' and later explained that b-money 'wasn't a complete practical design yet' and that he had 'grown somewhat disillusioned with cryptoanarchy' by the time he finished writing it up.
GitHub

Peter Todd and David Harding formalize Replace-by-Fee in BIP 125

David A. Harding, Peter Todd ↔ Peter Todd, Satoshi Nakamoto

BIP 125 formalized opt-in Replace-by-Fee (RBF), allowing Bitcoin transaction senders to signal that their unconfirmed transactions may be replaced by higher-fee versions. The concept traces directly to Satoshi Nakamoto's original transaction replacement mechanism described on BitcoinTalk in December 2010 — the same thread where Peter Todd made his second-ever forum post.
Bitslog (Sergio Lerner)

Sergio Lerner coins the term 'Patoshi' — updates Satoshi mining estimate to ~1.1M BTC

Sergio Demian Lerner ↔ Satoshi Nakamoto

Six years after his original analysis, Lerner published 'The Return of the Deniers and the Revenge of Patoshi,' coining the term 'Patoshi' (Pattern + Satoshi), updating his estimate to ~22,000 blocks / ~1.1 million BTC, and providing new evidence: zero timestamp inversions between Patoshi blocks versus 224 among non-Patoshi blocks, proving a single PC clock.
Medium

Whale Alert's 'The Satoshi Fortune' — analysis confirms Satoshi mined ~1.125 million BTC

Whale Alert ↔ Satoshi Nakamoto, Sergio Demian Lerner

Blockchain tracking service Whale Alert published an independent analysis confirming Satoshi mined 1,125,150 BTC across 22,503 of the first 54,316 blocks. The report claimed Satoshi used ~48 computers (or CPU threads), though this was disputed one month later by Lerner's re-mining simulation proving a single multi-threaded PC. The report's core finding — that Satoshi mined to protect the network, not for profit — aligns with the broader research consensus.
Bitslog (Sergio Lerner)

Sergio Demian Lerner proves Patoshi used a single multi-threaded PC — not dozens of computers

Sergio Demian Lerner ↔ Satoshi Nakamoto

Lerner published 'The Patoshi Mining Machine,' using re-mining simulation to prove that Satoshi mined on a single high-end CPU with 5 parallel threads — not 50+ networked computers. The nonce space was divided into 5 subranges with sequential inner scanning, producing a 78% high-value bias that is inconsistent with independent machines. This directly refuted Whale Alert's July 2020 claim of ~48 computers.
CoinDesk

Previously unpublished Satoshi-Finney emails revealed

Michael Kapilkov ↔ Satoshi Nakamoto, Hal Finney, Fran Finney

CoinDesk published previously unpublished emails between Satoshi Nakamoto and Hal Finney, obtained from Hal's personal computer via his widow Fran Finney. The emails included Finney asking Satoshi about network scalability in November 2008, Satoshi personally notifying Finney of the v0.1 release on January 8, 2009, and a follow-up where Satoshi mentioned being unable to receive incoming connections.
PLOS ONE

PLOS ONE peer-reviewed study confirms Patoshi mining anomalies in early Bitcoin

Maria Oskarsdottir ↔ Jacky Mallett, Satoshi Nakamoto, Sergio Demian Lerner

Reykjavik University researchers publish the first peer-reviewed academic study of the Patoshi pattern in PLOS ONE. The paper identifies two distinct nonce anomalies — the 'P anomaly' (extended Patoshi) and the 'Z anomaly' (zerononce) — and crucially finds that the P anomaly appears in ALL of the first 64 blocks mined, including Block 12 which was previously classified as non-Patoshi by ExtraNonce analysis.
SerHack

The alternative genesis block — Satoshi's pre-release test block from September 2008

SerHack ↔ Satoshi Nakamoto, Ray Dillinger, Hal Finney

SerHack published an analysis of a pre-release Bitcoin genesis block dated September 10, 2008 — discovered in source code Satoshi shared privately in November 2008. The test block had a completely different hash, trivially easy difficulty, and an initial block reward of 10,000 units. The September 10 date coincides with Lehman Brothers announcing $3.9 billion in losses.
BitcoinDefense.org

COPA evidence reveals Nicholas Bohm's previously unpublished emails with Satoshi

Nicholas Bohm ↔ Satoshi Nakamoto

The COPA v Wright record revealed that Nicholas Bohm, previously known only for a public January 2009 bitcoin-list bug report, had also exchanged a series of private emails with Satoshi Nakamoto. The exhibits show direct troubleshooting about routing, port forwarding, unaccepted blocks, and network isolation, including Satoshi's remark that there might have been almost nobody else running Bitcoin in July 2009.
HBO

Peter Todd = Satoshi Nakamoto theory — HBO "Money Electric" claims and counterevidence

Cullen Hoback ↔ Peter Todd, Satoshi Nakamoto, Adam Back

HBO documentary 'Money Electric: The Bitcoin Mystery,' directed by Cullen Hoback, names Peter Todd as a Satoshi Nakamoto candidate. The film's central evidence was a 2010 BitcoinTalk forum post where Todd replied to Satoshi's description of Replace-by-Fee, and Todd's later formalization of RBF in BIP 125. Todd denied the claim, calling it 'ludicrous.' The documentary was widely criticized by the Bitcoin community.
Uncommons

Michel Bauwens reflects on Satoshi, Bitcoin, and the path not taken

Michel Bauwens ↔ Satoshi Nakamoto

In an April 2025 interview, P2P Foundation founder Michel Bauwens recalled that Satoshi emailed him several times, offered him a few bitcoins, and explained why he was publishing the white paper on the P2P Foundation site. Bauwens also gave a mature retrospective on Bitcoin: he remained skeptical of its energy costs, but saw it as the first globally scalable, socially sovereign currency not issued by a firm or state.