Satoshi's Correspondence¶
Satoshi Nakamoto communicated publicly through three channels between 2008 and 2010: the Cryptography Mailing List, the P2P Foundation forum, and the BitcoinTalk forum. These writings -- 39 emails and 543 forum posts -- provide the most detailed record of Bitcoin's creator's thinking, intentions, and responses to early criticism. Satoshi disappeared from public communication in late 2010, leaving behind a body of writing that serves as the definitive guide to Bitcoin's original design philosophy.
The Cryptography Mailing List (October 2008 - January 2009)¶
Satoshi's earliest public communications were emails to the Cryptography Mailing List, a community of security researchers and cypherpunks. This is where Bitcoin was born as a public idea.
The Announcement (October 31, 2008)¶
On Halloween 2008, Satoshi posted a brief email with a link to the whitepaper:
"I've been working on a new electronic cash system that's fully peer-to-peer, with no trusted third party. The paper is available at: http://www.bitcoin.org/bitcoin.pdf"
-- Satoshi Nakamoto, Cryptography Mailing List, October 31, 2008
The email listed the main properties in five bullet points and included the full abstract. The paper was received with skepticism by several prominent cryptographers, leading to a series of technical exchanges that would span weeks and produce some of Satoshi's most important statements.
The First Response: Scalability Concerns (November 2, 2008)¶
The first substantive response came from James A. Donald, who questioned whether the system could scale. Satoshi responded with a detailed calculation showing that even Visa-level transaction volumes were feasible, and introduced the concept of Simplified Payment Verification:
"Long before the network gets anywhere near as large as that, it would be safe for users to use Simplified Payment Verification (section 8) to check for double spending, which only requires having the chain of block headers, or about 12KB per day. Only people trying to create new coins would need to run network nodes."
-- Satoshi Nakamoto, Cryptography Mailing List, November 2, 2008
The Cypherpunk Statement (November 6, 2008)¶
When told that "you will not find a solution to political problems in cryptography," Satoshi gave his most ideologically revealing reply:
"Yes, but we can win a major battle in the arms race and gain a new territory of freedom for several years. Governments are good at cutting off the heads of a centrally controlled networks like Napster, but pure P2P networks like Gnutella and Tor seem to be holding their own."
-- Satoshi Nakamoto, Cryptography Mailing List, November 6, 2008
This single exchange places Bitcoin firmly in the cypherpunk tradition established by David Chaum and carried forward by Adam Back, Wei Dai, Nick Szabo, and Hal Finney. Satoshi saw Bitcoin not merely as a technology but as a tool for preserving freedom.
Defending the Design (November 2008)¶
In response to objections about the energy cost of proof of work, Satoshi made the game-theoretic case for network security:
"The requirement is that the good guys collectively have more CPU power than any single attacker."
-- Satoshi Nakamoto, Cryptography Mailing List, November 3, 2008
On the question of spam botnets being used for mining: "The Bitcoin network might actually reduce spam by diverting zombie farms to generating bitcoins instead."
Satoshi argued that even small miners contribute to security through a "long tail" effect:
"There would be many smaller zombie farms that are not big enough to overpower the network, and they could still make money by generating bitcoins. The smaller farms are then the 'honest nodes'. The more smaller farms resort to generating bitcoins, the higher the bar gets to overpower the network, making larger farms also too small to overpower it so that they may as well generate bitcoins too."
-- Satoshi Nakamoto, Cryptography Mailing List, November 3, 2008
The Byzantine Generals' Problem (November 13, 2008)¶
When James A. Donald invoked the Byzantine Generals Problem -- the classical distributed systems challenge of achieving consensus among unreliable participants -- Satoshi offered a famous restatement, recasting the generals as hackers coordinating a Wi-Fi brute-force attack:
"The proof-of-work chain is a solution to the Byzantine Generals' Problem... Once each general receives whatever attack time he hears first, he sets his computer to solve an extremely difficult proof-of-work problem that includes the attack time in its hash... The proof-of-work chain is how all the synchronisation, distributed database and global view problems you've asked about are solved."
-- Satoshi Nakamoto, Cryptography Mailing List, November 13, 2008
Exchanges with Hal Finney (November 2008 - March 2009)¶
Hal Finney was the most technically engaged respondent on the mailing list and would later become the recipient of the first-ever Bitcoin transaction. Finney asked detailed questions about block propagation, chain reorganization, and attack scenarios. Satoshi's responses were thorough and revealed that he had already built the system:
"I appreciate your questions. I actually did this kind of backwards. I had to write all the code before I could convince myself that I could solve every problem, then I wrote the paper."
-- Satoshi Nakamoto, Cryptography Mailing List, November 9, 2008
Finney also suggested using Bitcoin as a secure timestamping system. Satoshi agreed:
"Indeed, Bitcoin is a distributed secure timestamp server for transactions. A few lines of code could create a transaction with an extra hash in it of anything that needs to be timestamped."
-- Satoshi Nakamoto, Bitcoin List, March 4, 2009
The Libertarian Appeal (November 14, 2008)¶
Responding to Hal Finney's observation that altruism might be sufficient to keep the network running, Satoshi acknowledged the ideological dimension:
"It's very attractive to the libertarian viewpoint if we can explain it properly. I'm better with code than with words though."
-- Satoshi Nakamoto, Cryptography Mailing List, November 14, 2008
Code Before Paper (November 17, 2008)¶
As the mailing list discussion deepened, Satoshi revealed the depth of preparation behind the project:
"I believe I've worked through all those little details over the last year and a half while coding it, and there were a lot of them. The functional details are not covered in the paper, but the sourcecode is coming soon. I sent you the main files. (available by request at the moment, full release soon)"
-- Satoshi Nakamoto, Cryptography Mailing List, November 17, 2008
The v0.1 Release (January 9, 2009)¶
When Satoshi released the first Bitcoin software on January 9, 2009, the announcement included the complete issuance schedule and practical mining instructions:
"Announcing the first release of Bitcoin, a new electronic cash system that uses a peer-to-peer network to prevent double-spending. It's completely decentralized with no server or central authority."
-- Satoshi Nakamoto, Cryptography Mailing List, January 9, 2009
The email included a now-prophetic observation on digital currency's future:
"I would be surprised if 10 years from now we're not using electronic currency in some way, now that we know a way to do it that won't inevitably get dumbed down when the trusted third party gets cold feet."
-- Satoshi Nakamoto, Cryptography Mailing List, January 16, 2009
And a vision for bootstrapping adoption that proved remarkably prescient:
"It might make sense just to get some in case it catches on. If enough people think the same way, that becomes a self fulfilling prophecy. Once it gets bootstrapped, there are so many applications if you could effortlessly pay a few cents to a website as easily as dropping coins in a vending machine."
-- Satoshi Nakamoto, Cryptography Mailing List, January 17, 2009
Practical Instructions¶
Satoshi provided early users with straightforward guidance: "You can get coins by getting someone to send you some, or turn on Options->Generate Coins to run a node and generate blocks. I made the proof-of-work difficulty ridiculously easy to start with, so for a little while in the beginning a typical PC will be able to generate coins in just a few hours."
On Prior Failed Systems¶
In an email exchange about getting people to value bitcoins, Satoshi referenced the failures of earlier systems:
"You know, I think there were a lot more people interested in the 90's, but after more than a decade of failed Trusted Third Party based systems (Digicash, etc), they see it as a lost cause. I hope they can make the distinction that this is the first time I know of that we're trying a non-trust-based system."
-- Satoshi Nakamoto, Cryptography Mailing List, January 16, 2009
He then outlined concrete initial use cases: "It could get started in a narrow niche like reward points, donation tokens, currency for a game or micropayments for adult sites. Initially it can be used in proof-of-work applications for services that could almost be free but not quite."
The P2P Foundation Post (February 2009)¶
Satoshi's post on the P2P Foundation forum is the most widely quoted statement on Bitcoin's monetary philosophy. Unlike the technical mailing list exchanges, this post was written for a general audience and laid out the case in plain language:
"The root problem with conventional currency is all the trust that's required to make it work. The central bank must be trusted not to debase the currency, but the history of fiat currencies is full of breaches of that trust."
-- Satoshi Nakamoto, P2P Foundation, February 11, 2009
"Banks must be trusted to hold our money and transfer it electronically, but they lend it out in waves of credit bubbles with barely a fraction in reserve. We have to trust them with our privacy, trust them not to let identity thieves drain our accounts. Their massive overhead costs make micropayments impossible."
-- Satoshi Nakamoto, P2P Foundation, February 11, 2009
The post included the encryption analogy -- just as strong cryptography made it "physically impossible for others to access" data regardless of justification, Bitcoin makes it impossible for any authority to seize or inflate the money supply:
"It's time we had the same thing for money. With e-currency based on cryptographic proof, without the need to trust a third party middleman, money can be secure and transactions effortless."
-- Satoshi Nakamoto, P2P Foundation, February 11, 2009
In follow-up posts, Satoshi described Bitcoin's economic model:
"In this sense, it's more typical of a precious metal. Instead of the supply changing to keep the value the same, the supply is predetermined and the value changes. As the number of users grows, the value per coin increases. It has the potential for a positive feedback loop; as users increase, the value goes up, which could attract more users to take advantage of the increasing value."
-- Satoshi Nakamoto, P2P Foundation, February 18, 2009
The P2P Research List (February 2009)¶
Satoshi also posted to the P2P Research mailing list, where he engaged with questions about how Bitcoin differed from David Chaum's digital cash. His response highlighted the critical difference:
"Of course, the biggest difference is the lack of a central server. That was the Achilles heel of Chaumian systems; when the central company shut down, so did the currency."
-- Satoshi Nakamoto, P2P Research, February 12, 2009
On the question of trust and reputation:
"In fact, Bitcoin does not use reputation at all. It sees the network as just a big crowd and doesn't much care who it talks to or who tells it something, as long as at least one of them relays the information being broadcast around the network. It doesn't care because there's no way to lie to it. Either you tell it crypto proof of something, or it ignores you."
-- Satoshi Nakamoto, P2P Research, February 13, 2009
He also expressed an early vision for programmable money: "I see Bitcoin as a foundation and first step if you want to implement programmable P2P social currencies... First you need normal, basic P2P currency working. Once that is established and proven out, dynamic smart money is an easy next step. I love the idea of virtual, non-geographic communities experimenting with new economic paradigms."
BitcoinTalk Forum Posts (2009-2010)¶
As Bitcoin attracted its first users, Satoshi engaged extensively on the BitcoinTalk forum, answering technical questions, addressing concerns, and occasionally revealing personal views.
On Economics¶
Satoshi engaged with criticisms of Bitcoin's economic model, demonstrating familiarity with Austrian and classical economics:
"The price of any commodity tends to gravitate toward the production cost. If the price is below cost, then production slows down. If the price is above cost, profit can be made by generating and selling more. At the same time, the increased production would increase the difficulty, pushing the cost of generating towards the price."
-- Satoshi Nakamoto, BitcoinTalk, February 21, 2010
"A rational market price for something that is expected to increase in value will already reflect the present value of the expected future increases. In your head, you do a probability estimate balancing the odds that it keeps increasing."
-- Satoshi Nakamoto, BitcoinTalk, February 21, 2010
The "Boring Grey Metal" Thought Experiment¶
In August 2010, Satoshi posted what may be his most important philosophical argument -- the thought experiment that directly addresses whether Bitcoin can have value without "intrinsic" utility:
"As a thought experiment, imagine there was a base metal as scarce as gold but with the following properties: boring grey in colour, not a good conductor of electricity, not particularly strong, but not ductile or easily malleable either, not useful for any practical or ornamental purpose -- and one special, magical property: can be transported over a communications channel."
-- Satoshi Nakamoto, BitcoinTalk, August 27, 2010
This was a direct response to the objection that Bitcoin has no backing. Satoshi argued that digital scarcity plus portability is sufficient for monetary value.
On the GPU Arms Race¶
In December 2009, Satoshi anticipated the coming hardware escalation:
"We should have a gentleman's agreement to postpone the GPU arms race as long as we can for the good of the network. It's much easer to get new users up to speed if they don't have to worry about GPU drivers and compatibility. It's nice how anyone with just a CPU can compete fairly equally right now."
-- Satoshi Nakamoto, BitcoinTalk, December 12, 2009
On Transaction Fees¶
"In a few decades when the reward gets too small, the transaction fee will become the main compensation for nodes."
-- Satoshi Nakamoto, BitcoinTalk, February 14, 2010
"If you're sad about paying the fee, you could always turn the tables and run a node yourself and maybe someday rake in a 0.44 fee yourself."
-- Satoshi Nakamoto, BitcoinTalk, February 14, 2010
On Mining Energy¶
"The heat from your computer is not wasted if you need to heat your home. If you're using electric heat where you live, then your computer's heat isn't a waste. It's equal cost if you generate the heat with your computer."
-- Satoshi Nakamoto, BitcoinTalk, August 9, 2010
"Bitcoin generation should end up where it's cheapest. Maybe that will be in cold climates where there's electric heat, where it would be essentially free."
-- Satoshi Nakamoto, BitcoinTalk, August 9, 2010
On Lost Coins¶
"Lost coins only make everyone else's coins worth slightly more. Think of it as a donation to everyone."
-- Satoshi Nakamoto, BitcoinTalk, June 21, 2010
On Explaining Bitcoin¶
"Writing a description for this thing for general audiences is bloody hard. There's nothing to relate it to."
-- Satoshi Nakamoto, BitcoinTalk, July 5, 2010
On the Design Being Permanent¶
"The nature of Bitcoin is such that once version 0.1 was released, the core design was set in stone for the rest of its lifetime."
-- Satoshi Nakamoto, BitcoinTalk, June 17, 2010
On How Long He Had Worked on It¶
"Since 2007. At some point I became convinced there was a way to do this without any trust required at all and couldn't resist to keep thinking about it. Much more of the work was designing than coding."
-- Satoshi Nakamoto, BitcoinTalk, June 18, 2010
On Wikipedia and Public Perception¶
When Wikipedia deleted Bitcoin's article, Satoshi took a pragmatic approach:
"It would help to condense the article and make it less promotional sounding as soon as possible. Just letting people know what it is, where it fits into the electronic money space, not trying to convince them that it's good."
-- Satoshi Nakamoto, BitcoinTalk, July 10, 2010
On Security Reports¶
Satoshi maintained a hands-on approach to security:
"Actually, it works well to just PM me. I'm the one who's going to be fixing it. If you find a security flaw, I would definitely like to hear from you privately to fix it before it goes public."
-- Satoshi Nakamoto, BitcoinTalk, July 29, 2010
The Bitcoin Mailing List (December 2008 - December 2010)¶
Satoshi also ran the Bitcoin mailing list for coordinating with the small community of early adopters. These emails were more operational -- release announcements, bug fixes, and upgrade notices. The list documents the evolution from v0.1 through v0.3.19.
Notable exchanges include his collaboration with Martti Malmi (sirius-m), who contributed the Linux version, system tray features, and the setup program for Windows. Satoshi acknowledged these contributions: "Many thanks to Martti (sirius-m) for all his development work, and to New Liberty Standard for his help with testing the Linux version."
The v0.3 release announcement in July 2010 contained a concise marketing pitch: "Escape the arbitrary inflation risk of centrally managed currencies! Bitcoin's total circulation is limited to 21 million coins."
Timeline of Key Communications¶
| Date | Channel | Significance |
|---|---|---|
| October 31, 2008 | Cryptography Mailing List | Whitepaper published |
| November 2-17, 2008 | Cryptography Mailing List | Intense technical debate |
| January 3, 2009 | -- | Genesis block mined |
| January 9, 2009 | Cryptography Mailing List | Bitcoin v0.1 released |
| January 12, 2009 | Bitcoin List | First transaction (to Hal Finney) |
| February 11, 2009 | P2P Foundation | Famous monetary philosophy post |
| December 12, 2009 | BitcoinTalk | GPU arms race warning |
| February 2010 | BitcoinTalk | Production cost economics |
| June 17, 2010 | BitcoinTalk | Core design "set in stone" |
| August 27, 2010 | BitcoinTalk | "Boring grey metal" thought experiment |
| December 12, 2010 | BitcoinTalk | Last known public post |
| December 13, 2010 | Bitcoin List | Last known email (v0.3.19 release) |
Disappearance¶
Satoshi's last known public communication was in December 2010. The final email to the Bitcoin mailing list, on December 13, 2010, was a routine release announcement for version 0.3.19, noting: "This is a minor release to add some DoS protection."
Before departing, Satoshi transferred control of the Bitcoin source code repository and network alert key to other developers, principally Gavin Andresen. No verified communication from Satoshi has appeared since.
The identity of Satoshi Nakamoto remains unknown. Approximately 1.1 million Bitcoin, believed to have been mined by Satoshi in 2009, have never been moved. The unmoved coins stand as either a deliberate act of restraint or a permanent disappearance -- either interpretation is consistent with the philosophy of trustlessness that Satoshi articulated throughout these writings.