Bitcoin breaks through 100,000 USD! Looking back at the history of Bitcoin's birth, who is Satoshi Nakamoto, the creator of everything?

Author: Wu Says Blockchain

This article summarizes the origins of Bitcoin and some current community speculations about "Who is Satoshi Nakamoto." This article uses GPT to compile information, and there may be inaccuracies.

On December 5, the price of BTC broke through $100,000, setting a new historical high.

1 Introduction

1.1 The Birth and Background of Bitcoin

The Driving Force of the Financial Crisis

The global financial crisis that erupted in 2008 not only severely impacted the financial system but also triggered widespread distrust among the public. The collapse of major financial institutions, such as Lehman Brothers, and the U.S. government's emergency bailout plan exposed deep-seated problems within the financial system.

The Rise of Decentralization Ideology

The rise of the internet provided fertile ground for the spread of decentralization ideas, and people gradually recognized the benefits of a "decentralized control" system, believing it better aligned with personal freedom, privacy protection, and the free flow of information.

• Network Liberalism: This ideology advocates that internet users should have autonomy, possess digital freedom, and avoid excessive regulation by governments and corporations. In this spirit, people hope to be free from excessive interference by third-party power institutions on key issues such as payments and wealth distribution. The peer-to-peer payment advocated by Bitcoin is the best interpretation of this idea.

• Early Electronic Currency Attempts: Before Bitcoin, several electronic currency systems attempted to achieve decentralization, such as DigiCash and B-money. However, most of these attempts failed due to a lack of true decentralization technology, the strong control of banks, and inherent trust vulnerabilities within the systems.

• DigiCash: Invented by cryptographer David Chaum in 1989, DigiCash was an early electronic currency system that employed innovative anonymity technology. However, DigiCash still relied on centralized financial institutions, and its business model made it unsustainable, ultimately leading to bankruptcy.

• B-money: Proposed by computer scientist Wei Dai in 1998, the concept of B-money is very similar to Bitcoin, including features such as decentralization, anonymity, and peer-to-peer transactions, but the system failed to materialize. The failure of B-money provided important lessons for the development of Bitcoin.

Although these early attempts did not succeed, they inspired later technological innovations, especially in the context of the 2008 financial crisis, allowing Bitcoin to emerge as the world's first fully decentralized digital currency.

The Historical Significance of Satoshi Nakamoto's White Paper Release

The birth of Bitcoin can be traced back to October 31, 2008, when "Satoshi Nakamoto" published a white paper titled "Bitcoin: A Peer-to-Peer Electronic Cash System" on a cryptography mailing list. In this white paper, Satoshi Nakamoto detailed how the Bitcoin system works, including core concepts such as mining, blockchain, and proof-of-work mechanisms.

• The Release of the Bitcoin White Paper: The white paper is concise and insightful, using minimal language to describe a complex system, attracting the interest of cryptography enthusiasts, geeks, and anti-authoritarian advocates. Satoshi Nakamoto's innovation lies in providing a truly viable technological solution for decentralized currency—blockchain—to ensure that transaction records are transparent, secure, and immutable.

• The Innovation of Decentralization and Peer-to-Peer Payments: Satoshi Nakamoto successfully solved the double-spending problem with Bitcoin. The double-spending problem is a critical issue that digital currencies must address, ensuring that the same unit of currency is not used multiple times. Traditional currency systems rely on third-party verification, while Bitcoin cleverly establishes trust on a decentralized consensus through "proof-of-work" and blockchain.

• The Ideal of Decentralized Currency: Bitcoin is not only a novel technological experiment but also the beginning of an idealistic movement. The core idea of Bitcoin is a "decentralized currency system" that anyone can participate in without the need for government or bank approval or regulation. This idea makes Bitcoin not only a technological tool but also a symbol of new financial freedom.

Through the white paper, Satoshi Nakamoto laid the foundation for a future decentralized economy, allowing Bitcoin to quickly become the core of the cryptocurrency field. Thus, the ideas of decentralization, the impetus of the financial crisis, and the failed attempts of early electronic currencies collectively shaped the historical context of Bitcoin's birth.

1.2 The Mystery of the Name Satoshi Nakamoto

The Choice of Name and Secrecy

The name "Satoshi Nakamoto" has sparked countless speculations from the very beginning. Some believe it is a Japanese name, but based on the language style of the Bitcoin white paper and code, it is difficult to determine whether Satoshi Nakamoto truly has a Japanese background.

• Multiple Interpretations Possible: The name Satoshi Nakamoto may contain multiple layers of meaning. It could be a form of Japanese disguise, a symbolic code, or even an attempt to confuse others. Some believe that Satoshi Nakamoto is not a single individual but a code name for a team.

• Characteristics of Different Candidates: There have been numerous speculations about the true identity of Satoshi Nakamoto within and outside the Bitcoin community, from early Bitcoin developers like Hal Finney and smart contract expert Nick Szabo to Dorian Nakamoto, who was mistakenly identified by the media as Satoshi Nakamoto. While these names each have their technical specialties, there is no conclusive evidence pointing to any specific individual.

Potential Motives for Hiding Identity

Satoshi Nakamoto's choice to anonymously publish the Bitcoin white paper serves both as a protection of personal privacy and possibly as a reflection of ideology.

• A Symbol of Decentralization: The decentralized nature of the Bitcoin system dictates that it should not have a revered founder. Satoshi Nakamoto's act of hiding his identity aligns with the "decentralization" spirit pursued when designing the Bitcoin system. If Satoshi Nakamoto's identity were made public, the entire Bitcoin project might be imbued with personal color, affecting its universality and openness.

• Avoiding Legal Risks: The birth of Bitcoin is essentially a challenge to the traditional financial system, and a currency form that operates outside government and bank control may face legal and regulatory pressures. Anonymity allows Satoshi Nakamoto to effectively avoid legal issues arising from the development and issuance of new currency.

• The Hacker Ethos: Cryptography and hacker culture advocate for secrecy and anti-authoritarianism. In these communities, anonymity is an important means to avoid personal worship and authority, while also symbolizing rebellion and freedom. In this context, Satoshi Nakamoto's anonymous identity may not only stem from personal safety considerations but also from an identification with cryptographic culture.

2 The Technical Foundation of Bitcoin and Satoshi Nakamoto's Contributions

2.1 Interpretation of the Bitcoin White Paper

Structure and Core Concepts of the White Paper

On October 31, 2008, Satoshi Nakamoto published the white paper "Bitcoin: A Peer-to-Peer Electronic Cash System," which sparked great interest in decentralized currency. The white paper is only 9 pages long but contains the core ideas and technical details of the Bitcoin system:

• Peer-to-Peer Network Structure: The system proposed by Satoshi Nakamoto bypasses banks and payment processing institutions, allowing transactions to occur directly between users. A peer-to-peer (P2P) network is essentially a decentralized network where each user node is both a provider and a verifier of information.

• This network structure eliminates the role of central institutions, allowing transactions to occur without relying on third parties, achieving true decentralized payments.

• Each node is equal, with the right to publish, receive, and verify transactions on the network, thus realizing a distributed power structure.

• Blockchain Structure: The blockchain is the core of the Bitcoin system, responsible for recording all transaction information. Satoshi Nakamoto stores all transaction data in a block structure, with each block containing a timestamp and the hash of the previous block, ensuring the continuity and immutability of the data through this chain-like structure.

• Block Generation: Miners (network nodes) generate blocks through "mining," creating a new block every 10 minutes to fix the rate of Bitcoin production and prevent inflation.

• Immutability of Transaction Records: Once a transaction in the blockchain is confirmed, it is very difficult to change. This means that there is no "rollback" operation in the Bitcoin system, nor is it subject to intervention by centralized institutions.

• Proof-of-Work Mechanism (PoW): PoW is the key to achieving distributed consensus in the Bitcoin network. Miners verify transactions and generate blocks by solving mathematical problems (hash calculations), ensuring the fairness of transaction records.

• Mining Process: Miners use computational power to perform hash calculations, competing to solve mathematical problems. Once a hash value that meets the conditions is found, the miner can add the block to the blockchain and receive Bitcoin rewards.

• Anti-Tampering: Because each block in the blockchain relies on the hash of the previous block, tampering with any transaction record requires simultaneously tampering with all subsequent blocks and redoing the PoW calculations, which is nearly impossible.

Technical Challenges Addressed

The technical solutions proposed by Satoshi Nakamoto in the white paper not only respond to the decentralization and security requirements needed for cryptocurrency systems but also achieve breakthroughs in several technical challenges:

• Double Spending Problem: Traditional digital currency systems rely on intermediary institutions like banks to ensure the validity and uniqueness of each transaction, avoiding the risk of "double spending" (i.e., the same currency being used twice).

• Satoshi Nakamoto uses blockchain and PoW mechanisms to ensure that every transaction is verified by the entire network, and only verified transactions can be added to the blockchain. This way, any Bitcoin can only be used once, preventing double spending.

• Byzantine Generals Problem: The Byzantine Generals Problem refers to how to achieve consensus in an untrustworthy network. Satoshi Nakamoto uses the PoW mechanism to allow the Bitcoin network to reach consensus without central control, solving this classic problem in computer science.

• In the Bitcoin system, miners verify transactions through the PoW mechanism and form a unique "longest chain" (i.e., the blockchain with the most accumulated PoW), ensuring data consistency and reliability across the entire network.

Through these technical designs, Satoshi Nakamoto constructed a complete framework for a decentralized currency system, providing technical support for the circulation and liquidity of Bitcoin.

2.2 The Architecture and Development of the Early Bitcoin Network

Building and Expanding the Network

• Genesis Block Generation: On January 3, 2009, Satoshi Nakamoto generated the Bitcoin genesis block (block height 0), which contained a special message: "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks." This message has been widely interpreted as Satoshi Nakamoto's distrust of the traditional financial system and hopes for decentralized currency.

• Release of the Bitcoin Client: On January 9, 2009, Satoshi Nakamoto released the first version of the Bitcoin client software and launched the Bitcoin network. The early Bitcoin network was small, with only a few nodes and users, and most users did not yet have a clear understanding of Bitcoin's value and potential.

Code Design Style and Functionality

• Programming Language and Concise Code: Satoshi Nakamoto's coding style is minimalistic, written in C++, with almost no redundancy or excessive comments, indicating a high level of programming skill. The Bitcoin code is open-source, allowing anyone to review and modify it, providing valuable technical resources for the cryptographic community and developers.

• Security and Functionality Design: The Bitcoin code places particular emphasis on security in functionality, including important features such as signature verification and private key protection. In the absence of a central server, these designs ensure the data security of the Bitcoin network and the uniqueness of transactions.

Establishment of the Bitcoin Community

• Interaction with Early Developers: Satoshi Nakamoto communicated with early cryptography enthusiasts and developers through emails and the Bitcointalk forum, patiently answering technical questions. The early Bitcoin community was mainly composed of technical geeks, cryptography researchers, and a few anti-authoritarian advocates.

• Satoshi Nakamoto's interaction with developers helped others understand the technical characteristics of Bitcoin, deepening people's understanding of how it works.

• Gradual Expansion of the Community: As Bitcoin gained attention in the technical community, more and more users began to run nodes and mine Bitcoin. The early community culture emphasized decentralization and free trading, attracting more participants opposed to the traditional financial system.

2.3 Satoshi Nakamoto's Innovative Contributions to Cryptocurrency

Key Technological Innovations of Bitcoin

• Introduction of Blockchain: Satoshi Nakamoto first proposed the concept of "blockchain" in the Bitcoin system, recording transaction information in the form of blocks and connecting them in chronological order, with each block containing the hash of the previous block, forming a "chain-like immutable" structure.

• The blockchain solves the trust issue of data in distributed systems, allowing every participant to view and verify transaction data, thereby increasing the system's transparency.

• Uniqueness of the Proof-of-Work Mechanism: Satoshi Nakamoto established the trust foundation of the distributed network through the PoW mechanism. The PoW mechanism requires miners to consume computational power to verify transactions, ensuring the security and decentralization of the network through economic incentives.

• Successful Implementation of the PoW Mechanism: The successful implementation of the PoW mechanism not only ensures the security of the Bitcoin system but also incentivizes miners to voluntarily maintain the system's operation, making it unnecessary to rely on a single authoritative institution.

Comparison with Early Electronic Currency Attempts

Bitcoin's ability to stand out among numerous early electronic currency attempts is closely linked to Satoshi Nakamoto's technological breakthroughs:

• Achievement of Decentralization: Early electronic currency systems like DigiCash and B-money failed to achieve true decentralization. DigiCash relied on a central server, while B-money was merely a theoretical concept. Bitcoin realized a decentralized peer-to-peer payment network through blockchain and PoW mechanisms.

• Anti-Censorship and Anonymity: Transactions within the Bitcoin system have anonymity, protecting user privacy through cryptographic algorithms. In contrast, early electronic currency systems struggled to achieve complete anonymity and relied on centralized verification systems.

Satoshi Nakamoto's Influence on the Technical Community

• Open Source Philosophy and the Spirit of "Code is Law": The Bitcoin code is open-source, and Satoshi Nakamoto advocated for "code is law" through open-source technology—meaning that all authority and rules in the network are determined by code. This philosophy has had a profound impact, setting an example for subsequent blockchain projects.

• Inspiration for Technological Innovation and the Development of Cryptocurrency: The Bitcoin system designed by Satoshi Nakamoto opened the door for cryptocurrency, greatly promoting the spread of blockchain technology. The success of Bitcoin triggered the "blockchain revolution," with its core ideas and technologies becoming the technical template for other cryptocurrencies and decentralized projects.

3 Clues to Satoshi Nakamoto's Identity

3.1 Early Online Activities

Satoshi Nakamoto's online activities have left many clues about his identity. Here are the methods of analyzing these clues:

Posts on Bitcoin Forums and Mailing Lists

• Bitcointalk Forum and Cryptography Mailing Lists: Satoshi Nakamoto's main activity platforms were the Bitcointalk forum and cryptography mailing lists. He posted a large number of technical discussions and discussions about the development direction of Bitcoin on these platforms.

• Language Style: Satoshi Nakamoto's English is very fluent, with British spelling, and his word choice is usually concise. This has led many to speculate that he may come from an English-speaking country and is likely to have received systematic education or lived in a predominantly English-speaking area.

• Simplicity of Technical Language: His posts mostly use concise technical terms, often avoiding complex explanations. This shows that he has a deep understanding of cryptography, computer science, and financial systems.

Timestamp Analysis

• Posting and Activity Times: Researchers found that Satoshi Nakamoto's online activity times are roughly concentrated between 5 AM and 10 PM GMT, and he almost never engages in activities on weekends.

• Time Zone Speculation: Based on this activity pattern, some speculate that Satoshi Nakamoto may live in a time zone close to GMT+0 (such as the UK or Portugal). Some researchers believe that his daily routine aligns with the time arrangements of the UK or other parts of Europe.

Linguistic and Writing Style Analysis

• Vocabulary and Grammar Usage: Satoshi Nakamoto's language style in the white paper and emails is unique. For example, he tends to use British spellings like "whilst" and "colour," and his sentence structures are mostly concise and clear statements.

• Linguistic Analysis: Some linguists have analyzed Satoshi Nakamoto's word choice and language structure, suggesting that he may have a background from the UK or Commonwealth countries. The use of British spelling leans towards the possibility of him being "non-Japanese."

3.2 Bitcoin Code and Writing Style

• Use of C++ Language: The initial Bitcoin code is primarily written in C++, a classic programming language commonly used for developing high-performance systems.

• Minimalistic Code Style: Satoshi Nakamoto's code has a relatively small number of lines, with concise comments and almost no unnecessary explanations. This indicates that he possesses high programming skills and likely has rich experience in developing large projects or operating systems.

• Minimal Dependency on Standard Libraries: Satoshi Nakamoto's code does not heavily rely on the C++ standard library, indicating that he is accustomed to directly manipulating low-level system resources and may have experience in operating system development, network engineering, or embedded system programming.

• Technical Preferences in Code: Satoshi Nakamoto used specific design patterns and cryptographic functions in his coding, demonstrating a deep understanding of cryptography, network security, and distributed systems. These technical preferences further narrow down his possible professional background—such as a senior developer, cryptography expert, or network security specialist.

• No Redundant Functions: The Bitcoin code contains only necessary functions, and this precise design style indicates that Satoshi Nakamoto had a high level of control over the project. This minimalist coding style reflects his efficiency and focus on project architecture.

3.3 Satoshi Nakamoto's Online Traces

In the early development and promotion of Bitcoin, Satoshi Nakamoto communicated with some early experts and developers in the cryptocurrency field, providing more indirect clues about his identity.

Interaction with Early Developers

• Hal Finney: Hal Finney was one of the key figures in early Bitcoin. He was the first developer to run Bitcoin software after Satoshi Nakamoto and was also one of Satoshi Nakamoto's initial email correspondents. Finney himself was a senior expert in the cryptocurrency field, leading many to speculate that he might have a direct connection to Satoshi Nakamoto's identity or even be a collaborator.

• Nick Szabo: Szabo is an early explorer of cryptocurrency and smart contracts, having proposed the concept of "bit gold" before Bitcoin, which is very similar to Bitcoin's design philosophy. Although Szabo has repeatedly denied being Satoshi Nakamoto, his technical background and early research have led him to be widely regarded as one of the candidates for Satoshi Nakamoto.

Satoshi Nakamoto's Decentralization Ideology

• Influence in the Technical Community: Satoshi Nakamoto actively participated in discussions on forums and answered technical questions, gradually establishing influence in the technical community. In the early development of the Bitcoin community, due to Satoshi Nakamoto's anonymity, his influence relied more on technical contributions and the dissemination of ideas rather than personal worship.

• Disappearance of Online Traces: Satoshi Nakamoto stopped publicly communicating on Bitcoin forums and emails in 2010, suddenly disappearing from public view. The Bitcoin network continued to operate stably after Satoshi Nakamoto's departure, and this continuation of decentralized management is believed to be in line with Satoshi Nakamoto's decentralization philosophy.

3.4 Comprehensive Analysis of Linguistic, Writing Style, and Technical Characteristics

• Correlation of Writing Style, Programming Habits, and Technical Expertise: By comparing Satoshi Nakamoto's language style in the white paper, forum posts, and Bitcoin code, some researchers have attempted to piece together Satoshi Nakamoto's personal profile. For example, the use of British English, the way C++ code is written, and the depth of cryptographic knowledge suggest that Satoshi Nakamoto may have an academic background in mathematics or computer science.

• Time Inference and Research in the Technical Community: Satoshi Nakamoto's activity times, language characteristics, and technical knowledge provide rich clues about his identity. For example, through time analysis and linguistic analysis, some speculate that Satoshi Nakamoto may come from the UK or have lived there for an extended period.

• Finney, Szabo, and Other Possibilities: The characteristics of Hal Finney and Nick Szabo align to some extent with those of Satoshi Nakamoto in terms of linguistic, writing style, and technical expertise.

• Nevertheless, researchers have not found conclusive evidence directly linking Satoshi Nakamoto's identity to any specific individual. The ambiguity surrounding Satoshi Nakamoto's identity cleverly echoes the decentralized nature of Bitcoin.

4 Analysis of Potential "Satoshi Nakamoto" Candidates

4.1 Candidate 1: Hal Finney

In the dawn of cryptocurrency, Hal Finney was already a legendary technical expert. His life was marked by innovation, geek spirit, and a persistent pursuit of privacy freedom. As a pioneer in the cryptocurrency field, Finney began exploring cryptographic technology in the 1990s, actively participating in the Cypherpunk community, which advocates for information freedom and decentralization, believing that cryptographic technology can bring about a "non-centralized, unrestrained" society. Finney was deeply committed to this ideology, dedicating nearly his entire life to it.

Finney's career initially did not focus on cryptocurrency but rather as a software engineer at a company called RPG. However, in his spare time, he devoted significant time to exploring cryptography. To him, cryptographic technology was not just a tool for protecting information but a means to help people defend their privacy. This led him to participate in the development of PGP (Pretty Good Privacy), a system for encrypting emails and files, which became an important tool for global privacy protection. This experience also made him well-known in the cryptography community.

In 2008, a mysterious figure named "Satoshi Nakamoto" published the Bitcoin white paper, and this peer-to-peer electronic cash system piqued Finney's interest. For him, Bitcoin was not just a technological innovation but a tool for combating centralization. It was not merely about digital currency; it symbolized the cryptographic ideals Finney had long championed—people could control their wealth and privacy without being subject to centralized institutions.

On January 3, 2009, Satoshi Nakamoto mined the genesis block of Bitcoin, officially launching the Bitcoin network. Finney was extremely enthusiastic about this and quickly contacted Satoshi Nakamoto. Soon, Satoshi Nakamoto made the Bitcoin code public, and Finney immediately downloaded the software and ran it. He became the second person in the world to run a Bitcoin node after Satoshi Nakamoto. On January 12, he received 10 Bitcoins from Satoshi Nakamoto, marking the first recorded Bitcoin transaction on the blockchain. Finney described his feelings at the time: "I sat in front of my computer, seeing 10 Bitcoins in my wallet, feeling unprecedented excitement." This transaction is considered to mark the official entry of Bitcoin into practical use.

As the Bitcoin network gradually operated, Finney began technical discussions with Satoshi Nakamoto. They frequently communicated via Bitcoin forums and emails, sharing their programming experiences and solutions. During this time, Finney became a loyal "debugger" of the Bitcoin code, continuously helping Satoshi Nakamoto optimize the Bitcoin network and suggesting improvements for its future development. Although they never met in real life, their technical exchanges were close and efficient.

Throughout this process, Finney remained puzzled about Satoshi Nakamoto's identity. This mysterious "friend" rarely revealed personal information, acted low-key and cautiously, and almost never disclosed any clues about his background. Finney sometimes speculated that Satoshi Nakamoto might be a fellow cryptographic geek who shared his ideals or a representative of a highly skilled programming team. However, he did not ask too many questions, knowing that probing might cause this mysterious partner to distrust him or even disappear.

Just as Bitcoin began to enter the public eye, fate dealt Finney a cruel blow. In 2011, he was diagnosed with amyotrophic lateral sclerosis (ALS). This rare disease gradually stripped him of control over his body, but Finney continued to fight against the illness with remarkable tenacity. His hands gradually became unable to type, but his mind remained active. Even in bed, Finney continued to care about Bitcoin's progress, constantly contemplating the future of decentralized currency.

As the price of Bitcoin soared and its influence expanded, Finney gradually attracted media and public attention. Many members of the cryptocurrency community believed that his relationship with Satoshi Nakamoto was unusual. Some even speculated that Finney was Satoshi Nakamoto himself, and his ALS explained why "Satoshi Nakamoto" suddenly disappeared in 2010. Finney denied this, stating that he was merely an early user of Bitcoin who assisted in debugging the system and was not the founder of Bitcoin. Nevertheless, many researchers still doubted Finney's claims, believing he might be "collaborating with Satoshi Nakamoto" or "aliasing as Satoshi Nakamoto."

On August 28, 2014, Finney passed away due to ALS. His death triggered profound mourning in the cryptocurrency community, with many Bitcoin supporters spontaneously organizing memorial activities to honor the contributions of this technical master. The Bitcoin community even initiated a fundraising campaign for Finney to help his family with medical expenses. Although Finney consistently denied being Satoshi Nakamoto during his lifetime, his death made the mystery more enigmatic, and the possibility of Finney being the founder of Bitcoin was recognized by more people.

Although there is no conclusive evidence to prove whether Finney was Satoshi Nakamoto, his story has become a symbol of the spirit of Bitcoin. Finney's persistence, secretive assistance, and eventual silent departure embody the belief in Bitcoin's decentralization. For the Bitcoin community, Finney represents all pioneers who believe in technological freedom and personal privacy rights, and his name is inseparable from the early history of Bitcoin, becoming a footnote to the identity of "Satoshi Nakamoto."

Next, we will tell the story of Nick Szabo as a candidate for "Satoshi Nakamoto." Szabo is a highly influential computer scientist and cryptographer, whose concept of "bit gold" is considered a precursor to Bitcoin. Szabo's pioneering research on smart contracts and his consistently low-key style make him one of the popular candidates for Satoshi Nakamoto. Here is a narrative description of Szabo's story.

4.2 Candidate 2: Nick Szabo

In the years leading up to the birth of Bitcoin, computer scientist Nick Szabo was already contemplating how to create a "native currency" based on the internet. He believed that as the internet developed, information could be freely disseminated, but transactions still relied on third-party institutions like banks and governments. Szabo firmly believed that currency should be free from centralized control, becoming a decentralized, open, and transparent existence. His vision was deeply rooted in the ideals of the "Cypherpunk" community, which encourages personal privacy and autonomy, advocating for a free economic system built through technology that is free from centralized control.

In 2005, Szabo published a paper proposing the concept of "bit gold." In this paper, he described a peer-to-peer digital currency that did not rely on banks or governments but ensured the validity of transactions and the security of the system through a mechanism known as "proof of work." The design of bit gold introduced the embryonic form of blockchain: a series of data records generated through proof of work that are sequentially linked, forming a decentralized ledger. This system could not only record transactions but also prevent forgery and tampering. Although bit gold was never realized, this idea became an important starting point for decentralized currency systems, leading Szabo to be considered as having all the technical foundations to create Bitcoin.

In 2008, the release of the Bitcoin white paper attracted widespread attention. When people read the white paper closely, they found that the design of Bitcoin was remarkably similar to Szabo's bit gold—so similar that one could almost consider Bitcoin an upgraded version of bit gold. Both adopted the proof-of-work mechanism, advocated for a decentralized peer-to-peer network, and possessed an immutable distributed ledger. The concept of Bitcoin seemed to be the perfect realization of Szabo's bit gold vision.

When Satoshi Nakamoto, the author of Bitcoin, appeared in the cryptographic community, Szabo was already very familiar with this emerging "virtual gold." He not only actively commented on the technical foundations of Bitcoin in its early days but also participated in the early promotion of Bitcoin. He praised Bitcoin's working mechanism on his personal blog and analyzed in detail the financial revolution it might bring. Many researchers thus speculated that Szabo was not only a staunch supporter of Bitcoin but might even be the inventor "Satoshi Nakamoto" himself. After all, no one understood the design principles of bit gold better than Szabo, nor did anyone know more about the specific implementation of proof of work.

To verify whether Szabo might be Satoshi Nakamoto, researchers conducted linguistic analyses comparing the Bitcoin white paper and Szabo's early blog posts. The results showed a high degree of similarity in language style between the two, particularly in the use of technical terms and sentence structures, with Szabo and Satoshi Nakamoto exhibiting remarkable consistency. For instance, Satoshi Nakamoto used the phrase "chain of blocks" in the white paper to describe the construction of the blockchain, while Szabo had used similar expressions in his articles years earlier. Such word choices and sentence structures, including certain descriptions of technical details, led people to believe that Szabo was very likely Satoshi Nakamoto.

Furthermore, the unique academic and technical style of the Bitcoin white paper suggests that the author not only possesses knowledge of computer science and cryptography but may also have a background in law and economics, which are Szabo's areas of expertise. Many researchers believe that Szabo likely made deliberate stylistic adjustments in writing the white paper to make it appear as an "independent and non-academic technical document," enhancing its readability and technical appeal.

Despite external suspicions that Szabo might be Satoshi Nakamoto, he has always maintained a low profile and has not made any public responses. Even in media interviews, Szabo has never directly acknowledged or denied his relationship with Bitcoin, and this "ambiguous handling" attitude has further deepened external doubts about his identity. As a cryptographer, Szabo has a high sensitivity to privacy protection, rarely disclosing his personal information in daily life, and is seldom active on social media, which aligns closely with Satoshi Nakamoto's anonymous characteristics.

There are rumors in the cryptographic community that Szabo chooses to remain anonymous and low-key possibly due to personal safety and legal risk considerations. The decentralized design of Bitcoin is essentially a tool against the traditional financial system, which may attract attention or even intervention from governments and banks. For Szabo, maintaining anonymity is not only a form of self-protection but also a practice of the "decentralization" philosophy. By not exposing his identity, he avoids personal worship and ensures that Bitcoin will not be affected by any specific individual.

In the cryptographic community, Szabo is regarded as "the philosopher of cryptocurrency." His ideas about Bitcoin have profoundly influenced the spread of decentralization thought, leading many technical geeks and libertarians to view Bitcoin as a symbol of resistance against centralized financial control. Although he has repeatedly remained silent, many Bitcoin supporters still firmly believe that Szabo is one of the strongest candidates for the founder of Bitcoin. Since the birth of Bitcoin, Szabo's status in the community has risen, and every speech or technical statement he makes sparks in-depth discussions about Bitcoin and blockchain technology.

Interestingly, Szabo has never formally participated in the technical development of Bitcoin. Although he is well-versed in Bitcoin's philosophy and technology, he has never publicly claimed to be a developer or contributor to Bitcoin. This calm and low-key attitude is seen as his personal style or a way to maintain anonymity. When faced with questions from skeptics, Szabo simply smiles in response, neither confirming nor denying, continuing to provide knowledge and inspiration to the cryptographic community as a "Bitcoin supporter."

To this day, there is no conclusive evidence proving that Szabo is Satoshi Nakamoto. However, his influence in the cryptographic field and the similarities between Bitcoin and bit gold keep him at the forefront of the list of candidates for Satoshi Nakamoto. People believe that Szabo may have played a "behind-the-scenes role" in the design of Bitcoin or may have directly participated in its development at some stage. His silence has become part of the Bitcoin mystery, making the story of Bitcoin's birth even more enigmatic and captivating.

4.3 Candidate 3: Dorian Nakamoto

In March 2014, Newsweek published a sensational article claiming to have found the mysterious founder of Bitcoin, Satoshi Nakamoto. In the article, the reporter pointed to an elderly Japanese-American man, Dorian Nakamoto. He was a resident of a small town in California's San Gabriel Valley, living a simple life and appearing mild-mannered, leading a reclusive lifestyle. The author noted that Dorian's full name—Dorian Prentice Satoshi Nakamoto—seemed to match the name of the Bitcoin founder "Satoshi Nakamoto," which piqued public curiosity, and the media quickly followed up, thrusting Dorian into the spotlight.

In the Newsweek report, Dorian Nakamoto was portrayed as a low-profile retired engineer who understood programming and had worked on some high-tech and government projects, focusing on systems and security engineering. The article claimed that Dorian had accumulated rich technical experience over decades, particularly in privacy and security, which made him a potential designer of Bitcoin's decentralized system. This "exposé" sparked global attention, with media flocking to Dorian's doorstep, trying to unveil the mystery of the Bitcoin founder.

Faced with the media onslaught, Dorian Nakamoto felt shocked and helpless. In subsequent interviews, he repeatedly stated that he had never heard of Bitcoin and knew nothing about cryptocurrency. Dorian appeared tired and resigned in front of the cameras, stating, "I'm just an ordinary engineer, I don't understand what you're talking about." Dorian's family was also outraged by the exposure of his identity, pointing out that the media's accusations were baseless and that Dorian was merely a simple man focused on family, with no connection to Bitcoin.

Despite Dorian's repeated denials, the media's report still sparked public skepticism and controversy. People began discussing the identity of the Bitcoin founder. Some believed that Dorian's denial might be a cover, while others sympathized with him, thinking he was merely an innocent victim misidentified by the media. The Bitcoin community expressed understanding and support for Dorian's situation, with some supporters even fundraising online to help him cope with the sudden life pressures and financial difficulties.

Although Dorian insisted he had no connection to Bitcoin, some "coincidences" between him and the Bitcoin founder still sparked public curiosity:

• Similarity of Names: Dorian's name indeed contains "Satoshi Nakamoto," the name signed by the Bitcoin founder. This coincidence raised questions about his identity and was the direct reason Newsweek chose him.

• Matching Technical Background: Dorian had worked as a systems engineer in the defense sector, responsible for developing secure communication systems, giving him a certain background in cryptography and computing. Newsweek believed he might possess the expertise required of the Bitcoin founder, especially in understanding decentralized and network security technologies.

• Mysterious Behavior: Reports indicated that when questioned by reporters, Dorian had stated, "I no longer participate," which was interpreted as a hint of his connection to Bitcoin. However, Dorian later clarified that this statement was a misunderstanding of the reporter's question, interpreting Bitcoin as one of his past work projects, which did not fully dispel public doubts about him.

As the news continued to ferment, the Bitcoin community showed great sympathy and support for Dorian Nakamoto. Community members believed that the Newsweek report lacked conclusive evidence and was prone to over-interpretation. Dorian's life was thrown into turmoil by this report, and many felt he was a victim of the media, prompting the Bitcoin community to initiate a fundraising campaign called "Dorian Fundraiser" to help him through tough times. This fundraising effort received substantial support from Bitcoin users, ultimately raising tens of thousands of dollars, which were used for Dorian's daily living expenses and legal fees.

This fundraising activity reflects the humanitarian concern of the Bitcoin community. Many community members believe that Bitcoin is not just a technology or currency but also a symbol of decentralization, and supporting Dorian is a practice of this decentralization spirit. They believe that Dorian's experience serves as a reminder that the power of decentralization lies not in the identity of any individual but in the independence of the technology itself and the cohesion of the community.

The Dorian Nakamoto incident ultimately proved to be a misunderstanding, but it revealed the unique allure of the mystery surrounding the identity of Bitcoin's founder. The media's interest, public speculation, and the Bitcoin community's response all reflect a strong curiosity about the identity of Bitcoin's founder. Although Dorian is not the founder of Bitcoin, his story adds a layer of drama to the mystery of the identity of Bitcoin's founder.

This incident reminds people that the decentralized nature of Bitcoin means it does not rely on any specific individual or team for existence; its value lies in its independence, transparency, and distributed network structure. Even without a known founder, or even if Satoshi Nakamoto himself never appears, Bitcoin can still operate autonomously. The Dorian Nakamoto incident proves to the world that Bitcoin is not just a decentralized technological tool; it has also evolved into a symbol representing information transparency, decentralized management, and the protection of personal privacy rights.

Dorian Nakamoto's life was completely changed by this misunderstanding. His daily life was disrupted, becoming the focus of the media, and then gradually fading from public view. The Dorian incident adds a layer of humor and absurdity to the mystery of Bitcoin's founder identity, reminding people that they may never find a definitive answer in the search for Satoshi Nakamoto. This ordinary man inadvertently became part of the Bitcoin myth, making the identity of Satoshi Nakamoto even more elusive.

4.4 Candidate 4: Adam Back

Adam Back is one of the pioneers in the field of cryptocurrency and decentralized technology, having been active at the forefront of cryptography and computer science since the 1990s. As a PhD in cryptography, Back focused on how to address issues of online privacy and information security through technological means. In an era when the internet was gradually rising and the speed of information dissemination was accelerating, Back recognized that online privacy and information security would become increasingly important.

In 1997, Back published his groundbreaking research—"Hashcash," an innovative proof-of-work (PoW) mechanism. Initially, Hashcash was designed to reduce spam and prevent denial-of-service attacks (DDoS). Hashcash increased the cost of sending spam by requiring senders to perform complex calculations and expend a certain amount of "work" before sending emails. The proof-of-work mechanism requires computing a hash value that meets specified conditions, allowing only users who successfully solve the problem to continue sending emails. This significantly increased the cost of sending spam while effectively protecting network resources, and Hashcash gained widespread recognition.

Although Hashcash was initially intended to reduce spam, Back had a deeper understanding of its future potential. He believed that the proof-of-work mechanism could not only be applied to emails but also to digital currencies to ensure the security of decentralized networks. This idea was seen as avant-garde and radical at the time, but it laid the theoretical foundation for the development of cryptocurrency, becoming an important source of inspiration for the later PoW mechanism of Bitcoin.

In 2008, Satoshi Nakamoto published the Bitcoin white paper, proposing a decentralized currency system based on proof of work. Many noticed that Bitcoin's PoW mechanism was very similar to Back's Hashcash design, even considered an "upgraded version" of Hashcash. The Bitcoin system verifies transactions by requiring miners to perform proof of work, preventing double spending and network attacks, which aligns closely with Back's Hashcash philosophy. Back was not surprised by Bitcoin; instead, he quickly expressed strong interest in its potential and publicly supported Bitcoin's philosophy from the early days of its emergence.

The design of Bitcoin's proof-of-work directly references Back's Hashcash, and the white paper does not detail its design origins, raising suspicions about Back. Some researchers believe that the founder of the Bitcoin system was clearly familiar with the technical principles of Hashcash, and there are very few people in the cryptographic field with such technical expertise. More importantly, Back himself is passionate about decentralized systems and cryptocurrencies, and his technical background and personal ideals almost perfectly align with Satoshi Nakamoto's philosophy.

As Bitcoin gradually gained attention, Adam Back was considered one of the most likely candidates for Satoshi Nakamoto. Back not only played an indirect key role in the technical design of Bitcoin but also actively promoted it in its early development. He frequently spoke in the media, explaining the working principles of Bitcoin and the advantages of decentralized systems in detail, leading people to further suspect that he might have some relationship with the designer of Bitcoin or could even be the true founder of Bitcoin.

However, in the face of external speculation, Back has always maintained a low profile and repeatedly denied being Satoshi Nakamoto. He has stated that he is not Satoshi Nakamoto, emphasizing that he is merely a technical expert supporting Bitcoin and has never participated in its founding work. Back pointed out that his support for Bitcoin is based on ideals of decentralization and personal privacy, not because he is the inventor of Bitcoin. Nevertheless, many members of the cryptocurrency community still believe that Back may have played an important role in the founding of Bitcoin or at least be a member of some "core technical team."

Adam Back's technical philosophy and work style are highly consistent with the decentralized spirit of Bitcoin. He has always believed that decentralized systems should be "without a single authority" to ensure freedom of information and respect for personal privacy. In his technical philosophy, no individual or institution should have a monopoly on information, and decentralized systems should be maintained collectively by users, a concept that is also reflected in the design of the Bitcoin network.

Back maintained close contact with Satoshi Nakamoto during the early stages of Bitcoin, and this relationship extended beyond technical support to a profound understanding of Bitcoin's design philosophy. Many experts in the cryptographic community believe that Satoshi Nakamoto's reference to Hashcash in the Bitcoin white paper may be a form of "homage," suggesting that he likely had direct contact with Back. In the "Cypherpunk" philosophy of the cryptographic community, respecting the technical achievements of predecessors and maintaining anonymity is a widely accepted culture, which may have facilitated some form of "academic exchange" between Back and Satoshi Nakamoto.

Adam Back has always maintained a low-profile lifestyle. Despite his extensive academic achievements and technical expertise, he rarely mentions his personal life in public and never promotes his accomplishments in cryptography. Back himself has stated that the value of technology lies not in the fame of any individual but in its impact on society. He believes that decentralized systems are the future direction of society, and Bitcoin is the best interpretation of this philosophy. Regarding speculation about the identity of "Satoshi Nakamoto," Back appears indifferent: "The existence of Bitcoin itself is already important enough; who the founder is does not affect its value."

This attitude leads people to believe that Back may be intentionally keeping his distance to avoid excessive personal association with Bitcoin. This "detachment" is very similar to Satoshi Nakamoto's "disappearance," both suggesting the essence of decentralization: Bitcoin does not belong to anyone and does not need to rely on individual authority.

Although Back is not the direct founder of Bitcoin, his influence on the future of Bitcoin cannot be ignored. The Hashcash mechanism he created and the dissemination of his decentralized philosophy have kept the Bitcoin community focused on technological innovation and decentralization. Additionally, he holds an important position within the core developer group of Bitcoin, having made key contributions to discussions on issues such as Bitcoin scalability, transaction speed, and privacy protection. As one of the founders of Blockstream, Back has promoted technological innovation in Bitcoin and is committed to facilitating the global promotion and popularization of Bitcoin.

After Satoshi Nakamoto's disappearance, Back became one of the key figures in the development of Bitcoin. His influence extends beyond technical contributions to the cultural shaping of the Bitcoin community. Back's low profile and persistence have made him one of the spiritual pillars of Bitcoin, symbolizing Bitcoin's ability to develop autonomously in a decentralized state.

4.5 Candidate 5: Gavin Andresen

Gavin Andresen was originally an unassuming computer scientist who made significant contributions in graphics programming and virtual reality technology early in his career. As a software developer, he worked for many years in 3D graphics and virtual reality, participating in the development of several well-known virtual reality projects. However, Andresen was not complacent about his technical expertise; he maintained a strong interest in cutting-edge technology and emerging projects, eager to find more impactful technical endeavors.

In 2009, Bitcoin emerged as a new type of decentralized digital currency, which greatly intrigued Andresen. At that time, Bitcoin was still relatively unknown, with only a few technical geeks paying attention to this innovative technology. Andresen was attracted to Bitcoin's philosophy: decentralization, open-source, and no need for third-party trust, which perfectly aligned with his ideal pursuit of future currency systems. In 2010, Andresen officially joined the Bitcoin development team and quickly became a core member of the project.

As the Bitcoin network continued to develop, Satoshi Nakamoto gradually faded from the community. By the end of 2010, Satoshi Nakamoto decided to transfer the code repository management rights of Bitcoin to Andresen and announced that he would "move on to other things." This move made Andresen the new technical leader of the Bitcoin community, responsible for the daily maintenance and code updates of the Bitcoin network. Although the outside world was unclear why Satoshi Nakamoto chose Andresen, the Bitcoin community largely accepted this arrangement, viewing him as a solid and enthusiastic developer.

After taking over the code repository management, Andresen maintained Bitcoin's open-source and decentralized principles while also promoting improvements and expansions through technical innovation. Under his maintenance, Bitcoin's code became more stable, and the community's development became more vibrant. As Satoshi Nakamoto's appointed successor, Andresen gradually became a symbolic figure in the Bitcoin community, especially after Satoshi Nakamoto's "retirement," being widely regarded as Bitcoin's "spokesperson" by Bitcoin supporters.

During the early development of Bitcoin, Andresen communicated multiple times with Satoshi Nakamoto via email and forum discussions, covering the technical details and future direction of Bitcoin. Andresen has repeatedly stated that Satoshi Nakamoto was a respected technical expert with high programming skills and innovative spirit, but he knew nothing about Satoshi Nakamoto's identity. Although they communicated through emails, Satoshi Nakamoto always remained low-key and never revealed any personal information.

Before gradually withdrawing, Satoshi Nakamoto had reminded Andresen to "keep a low profile and not talk too much about personal information." This advice has left a lasting impression on Andresen, who believes it was not only for the sake of Bitcoin's decentralized design but also Satoshi Nakamoto's insistence on privacy protection. Shortly after Satoshi Nakamoto's departure, Andresen began proposing broader plans for Bitcoin's future, aiming to promote Bitcoin's popularization and expand its application scope.

After Satoshi Nakamoto's retirement, Andresen injected new vitality into the Bitcoin community. To ensure Bitcoin's long-term development, he established the "Bitcoin Foundation" in 2012, hoping to promote technological innovation, industry standardization, and educational outreach for Bitcoin. The foundation was initially established to support Bitcoin developers and promote Bitcoin's global popularization. However, as Bitcoin's value and visibility increased, the foundation gradually attracted some controversy.

Some Bitcoin supporters believed that the establishment of the foundation deviated from Satoshi Nakamoto's decentralization philosophy. Although the Bitcoin Foundation did not directly control the operation of the Bitcoin network, its existence suggested that the Bitcoin community might gradually lean towards centralization. This viewpoint sparked divisions within the Bitcoin community, with some members questioning Andresen's intentions, believing he had inadvertently strayed from Satoshi Nakamoto's decentralization ideals.

Due to Andresen's prominent position in the Bitcoin community, many began to suspect that he might not only be the "manager" of Bitcoin but also potentially Satoshi Nakamoto himself or a core team member. Andresen repeatedly denied this, stating that he was merely a developer and supporter of Bitcoin, not the inventor of Bitcoin. He believes that Satoshi Nakamoto's decentralization philosophy is the true reason for Bitcoin's success, and his role is simply to inherit and maintain Bitcoin's development.

Despite his repeated assertions that he is not Satoshi Nakamoto, doubts about his identity persist. In 2016, Australian businessman Craig Wright claimed to be the inventor of Bitcoin and received some support from Andresen. After hearing Wright's evidence, Andresen expressed agreement with Wright's identity. However, due to insufficient evidence, Craig Wright's claims were ultimately deemed false, and Andresen faced scrutiny during this incident. This event further deepened the Bitcoin community's confusion about Satoshi Nakamoto's true identity and made Andresen's relationship with Satoshi Nakamoto more mysterious.

Although there has always been controversy surrounding Andresen's identity, his contributions to Bitcoin are undeniable. After taking over the management of the Bitcoin code, Andresen continuously promoted technological innovation and improvement. To address scalability issues within the Bitcoin network, Andresen proposed a series of optimization plans, such as improving transaction processing efficiency and enhancing the network's resistance to attacks. These technological innovations ensured that the Bitcoin network remained stable under higher loads.

Additionally, Andresen's suggestions for improvements in Bitcoin's privacy protection and transaction speed have driven the technological development of Bitcoin. As one of the founders of the Bitcoin Foundation, he not only dedicated himself to promoting the Bitcoin community but also actively participated in establishing Bitcoin standards, promoting compliance and stability in the technical field.

4.6 Candidate 6: Wei Dai

In the 1990s, cryptocurrency had not yet entered the public eye. The internet was just emerging, and the openness and freedom of cyberspace made a group of technical geeks and cryptographers realize that while information could be freely disseminated, privacy and security were becoming increasingly important. These individuals gathered in the "Cypherpunk" community to discuss cryptographic technology and information freedom. Wei Dai was one of these community members. As a low-key and intelligent computer scientist, his interest in cryptography and decentralized systems went far beyond ordinary technical development, involving deep reflections on social structure, economics, and personal freedom.

In 1998, Wei Dai published a groundbreaking article proposing the concept of "B-money." This was the first time in internet history that a decentralized digital currency was described. The core idea of B-money was to create a currency system that did not require third-party trust through decentralization and cryptographic means. Dai detailed the design principles of B-money in the article: all transactions and account records in the network would be conducted anonymously and verified collectively by all nodes, ensuring the system's security and transparency.

This radical idea aimed to completely overturn traditional financial and banking systems through technological means. Dai proposed that the operation of the B-money system did not require a central bank or any centralized regulatory agency, with all participants obtaining B-money through proof of work and achieving autonomy within the network. This concept laid the theoretical foundation for decentralized currency and is considered by many researchers to be the "ideological prototype" of Bitcoin.

A decade later, in 2008, a person signing as "Satoshi Nakamoto" published the Bitcoin white paper, proposing a decentralized currency system that was almost entirely consistent with the B-money concept. Bitcoin not only surpassed B-money in technical implementation but also became the benchmark for cryptocurrencies with its decentralized, anonymous transactions and proof-of-work design. In the white paper, Satoshi Nakamoto explicitly mentioned that the design of B-money inspired Bitcoin and paid tribute to Dai's contributions.

Due to the astonishing similarities between the concepts of Bitcoin and B-money, the public widely speculated that Satoshi Nakamoto was likely Wei Dai himself. Although the Bitcoin system is more complex in its specific implementation, its core logic is almost identical to that of B-money, deepening suspicions about Dai's identity. Despite Dai never claiming a direct connection to Bitcoin, many members of the cryptographic community view him as an undeniable "prophet" in the design of Bitcoin.

Although he is seen as a source of inspiration for Bitcoin's design, Dai has always maintained a low profile. He rarely gives interviews and shows little interest in public attention, even refraining from expressing any opinions during Bitcoin's global popularity. His mysterious low profile closely resembles Satoshi Nakamoto's style: never discussing personal life, rarely appearing in public, and focusing on the dissemination of technology and ideas rather than personal fame.

Dai's low-key attitude is not uncommon in the Cypherpunk community. This group generally believes that decentralized systems should not be controlled or represented by any specific individual but should be maintained collectively by the community. Dai's low profile is not just a lifestyle choice but a commitment to the ideals of cryptography and decentralization. He has always believed that technology should serve human freedom and privacy, rather than becoming a tool for certain individuals to gain power. This philosophy aligns closely with Satoshi Nakamoto's design intentions, further deepening speculation about his identity as Satoshi Nakamoto.

Although the concept of B-money was groundbreaking, it failed to materialize due to a lack of specific technical implementation. Dai only proposed the concept of B-money theoretically and did not bring it to fruition, possibly due to technical limitations and lack of resources. However, the emergence of Bitcoin changed this situation. Bitcoin not only realized a decentralized trading network based on B-money but also overcame the technical challenges of distributed ledgers by recording transactions through blockchain and ensuring the immutability of the ledger.

B-money did not solve the "double spending" problem in its design, failing to guarantee that transaction records in the network would not be reused, while Bitcoin addressed this issue through the proof-of-work mechanism and miner reward system. This allowed Bitcoin to not only technically surpass B-money but also made the vision of a decentralized currency a reality. Many believe that Satoshi Nakamoto was able to design the Bitcoin system because he deeply understood the limitations of B-money, and this understanding enabled him to make technological breakthroughs.

After the launch of the Bitcoin network in 2009, Satoshi Nakamoto and early developers frequently communicated on forums and emails, continuously improving the Bitcoin system. However, as Bitcoin's popularity gradually rose, Satoshi Nakamoto suddenly vanished in 2010, leaving only the Bitcoin code and network behind. Since then, Satoshi Nakamoto has not made any public appearances or disclosed any identity clues. This departure has turned the founder of Bitcoin into an unsolvable mystery, prompting many researchers to search for Satoshi Nakamoto's true identity in the cryptographic community, with Wei Dai becoming one of the primary candidates.

However, in the face of external speculation, Dai has remained silent. He neither confirmed nor denied his relationship with Bitcoin, and this ambiguous attitude has led him to be viewed as a "possible Satoshi Nakamoto" in the Bitcoin community. Unlike other candidates, Dai's low profile not only makes him a mysterious figure in the history of cryptocurrency but also adds to the elusiveness of Satoshi Nakamoto's identity.

Even if he is not the direct founder of Bitcoin, Dai's B-money concept has had an undeniable impact on cryptocurrency. The concept of B-money sparked discussions and research on decentralized currency in the cryptographic community, inspiring the development of various cryptocurrencies like Bitcoin. The proposal of B-money not only laid the theoretical foundation for Bitcoin but also spread the ideas of "decentralized autonomy" and "information freedom" within the cryptographic community, leading more people to believe that technology can achieve the autonomy and democratization of financial systems.

After the flourishing development of Bitcoin and other cryptocurrencies, Dai continues to live a low-profile life. He has not participated in the subsequent development of Bitcoin and has never publicly claimed his role in its founding. However, the intellectual legacy he left behind makes him an "ideological founder" that cannot be ignored in Bitcoin's history. For the cryptographic community, Dai is both an academic pioneer and a philosophical enlightener, and his pursuit of decentralized currency continues to influence generations of cryptographers.

4.7 Candidate 7: Dave Kleiman

Dave Kleiman was a computer security expert from Florida, USA, who was highly respected in the fields of computer forensics and cryptography. Kleiman served in the military as a computer technician and, after leaving the service, dedicated himself to computer science and security technology, leaving a profound mark in the fields of cryptography and network security due to his exceptional technical talent. Despite a significant life change due to a motorcycle accident that limited his physical capabilities, Kleiman continued to engage in cryptographic research and computer forensics work with remarkable determination.

As a technical genius, Kleiman was not only a technical advisor to many members of the cryptographic community but also authored numerous professional papers on computer forensics and security. His expertise in computer security and keen technical perspective earned him the respect of many peers. Additionally, Kleiman provided consulting services to several cryptographic technology companies and participated in the design of multiple cryptocurrency projects. In the eyes of his friends, he was a calm and helpful technical genius, always dedicated to contributing his wisdom to the cryptographic technology community.

Dave Kleiman became one of the candidates for "Satoshi Nakamoto" due to his connection with another well-known figure in the cryptocurrency field, Craig Wright. Craig Wright is an Australian businessman who has publicly claimed to be "Satoshi Nakamoto" multiple times and presented some technical evidence. In this process, Wright claimed that Kleiman was his partner, and the two jointly participated in the creation of Bitcoin and designed its technical architecture.

According to Wright, he and Kleiman developed the Bitcoin system together and reached a "joint anonymous release" agreement around 2011, deciding to attribute the creation of Bitcoin to the pseudonym "Satoshi Nakamoto." Wright stated that Kleiman was responsible for debugging and optimizing parts of the Bitcoin code, and the two discussed the decentralized design philosophy and proof-of-work mechanism of Bitcoin together. However, Kleiman never publicly claimed to be the founder of Bitcoin during his lifetime, nor did he leave any direct records of the Bitcoin development process. It is this silence that has led to public doubts about his potential identity as "Satoshi Nakamoto."

After Kleiman's death, his family and friends discovered a mysterious hard drive among his belongings, containing a large number of encrypted files. Some suspect that these encrypted files may contain early development records of Bitcoin or even private keys, holding a "treasure trove" of substantial Bitcoin. However, to this day, the contents of these files remain undeciphered, and the public cannot ascertain whether there is indeed evidence of Bitcoin's founding within them.

Wright claimed that these hard drives contained technical collaboration records between him and Kleiman, as well as technical discussions during the development of Bitcoin. However, due to the high level of encryption on the files, Kleiman's family has yet to unlock them, and the true evidence regarding Bitcoin remains elusive. Therefore, many believe that Kleiman's hard drive may be the key to unraveling the mystery of Satoshi Nakamoto's identity, but it could also be an "eternal technical legacy" that can never be solved.

As a computer security expert, Kleiman possessed all the technical qualifications to become "Satoshi Nakamoto." He not only had profound expertise in computer forensics and cryptography but also excelled in developing and using complex encryption systems. According to those familiar with Kleiman, his knowledge of computer security was comprehensive, particularly in decentralized network systems and data encryption. Kleiman's coding style was concise and efficient, with a strong emphasis on privacy protection, which closely aligns with Satoshi Nakamoto's programming style.

Additionally, Kleiman's low-key personality and reluctance to draw attention to himself align with Satoshi Nakamoto's characteristic of maintaining anonymity. He rarely appeared in public, and even while battling illness, he remained highly focused on technical research. Many members of the cryptographic community believe that Kleiman's silent nature suggests that even if he participated in the creation of Bitcoin, he might not claim to be "Satoshi Nakamoto." This trait of Kleiman's is seen as a significant piece of evidence supporting his potential identity as Satoshi Nakamoto.

After Kleiman's death, controversies surrounding the identity of the Bitcoin founder and the substantial Bitcoin holdings continued to escalate. Kleiman's family filed a lawsuit after learning of Craig Wright's self-claim, asserting that the Kleiman family should own a portion of the Bitcoin generated during the founding process. Kleiman's brother argued that Wright had no right to unilaterally declare the identity of the Bitcoin founder or to claim sole ownership of all Bitcoin.

In this legal dispute, Kleiman's family publicly revealed many of his communications with Wright, showing that the two had closely collaborated on multiple technical projects. However, Wright's self-identification as Satoshi Nakamoto lacked sufficient evidence, and the court ultimately could not confirm whether Kleiman and Wright were indeed the true founders of Bitcoin. Although the lawsuit did not reach a final conclusion, Kleiman's potential role in Bitcoin's development reignited passionate discussions within the Bitcoin community regarding the identity of "Satoshi Nakamoto."

In 2013, Kleiman passed away at home due to illness at the age of 46. His death prompted deep mourning within the Bitcoin community, and his departure further clouded the mystery of Satoshi Nakamoto's identity. Many believe that Kleiman's death made the opportunity to uncover the identity of the Bitcoin founder even more elusive, and the encrypted files he left behind may forever remain an "unopened secret." Some members of the cryptographic community speculate that Kleiman may have been part of the Bitcoin founding team or even Satoshi Nakamoto himself, but his passing took that secret with him.

After Kleiman's death, his friends and family discovered his potential contributions to Bitcoin and cryptocurrency, and the cryptographic community grew more respectful of his technical talents and achievements. Although there is no evidence to date proving that Kleiman is Satoshi Nakamoto, his story and role in the early development of Bitcoin make the speculation about the identity of the Bitcoin founder even more elusive.

4.8 Candidate 8: Peter Todd

Peter Todd is a computer scientist and cryptography expert known for his significant contributions to improving the security and privacy of the Bitcoin network. Todd developed a strong interest in cryptographic technology from a young age and quickly became involved in the development of cryptography and decentralized systems. He is highly skilled at identifying and resolving security vulnerabilities in blockchain systems, earning him the title of "Bitcoin's Security Guardian."

Todd was not initially a member of the Bitcoin founding team, but he closely followed Bitcoin's rise. As Bitcoin began to attract attention from the community and the market, Todd keenly recognized its potential to trigger financial transformation and quickly joined the Bitcoin developer group. Shortly after he joined, Bitcoin had already become one of the most popular cryptocurrencies, but it also faced many technical challenges, particularly regarding security and scalability. Todd thus quickly emerged in the Bitcoin community as one of its core developers.

After joining the Bitcoin community, Todd dedicated himself to enhancing the security of the Bitcoin protocol. He advocated for maintaining strict security standards in Bitcoin's code to ensure the stability of the entire system. He proposed several improvement plans, providing innovative solutions for Bitcoin's scalability, privacy protection, and anti-censorship. His technical contributions include improving Bitcoin's transaction mechanisms and proposing the concept of lightweight nodes, which allows users to participate in the Bitcoin network without running a full node, thereby increasing the decentralization of the network.

In addition to his technical contributions, Todd also played the role of a "moral defender" in the Bitcoin community. He strongly advocated for transparency in the Bitcoin development process and publicly opposed any changes that could lead to centralization. His high commitment to the decentralized spirit of Bitcoin aligns closely with Satoshi Nakamoto's philosophy. Todd's development style is cautious and conservative; he prioritizes ensuring the system's security over hastily pursuing expansion, a cautious attitude that many believe closely resembles Satoshi Nakamoto's technical philosophy.

In the Bitcoin community, Peter Todd maintains relatively close ties with other "Satoshi Nakamoto" candidates. As a Bitcoin developer, he has had public or private technical discussions with Gavin Andresen, Adam Back, Nick Szabo, and others. These discussions have involved issues of Bitcoin's scalability, privacy protection, and security, with Todd's viewpoints aligning closely with Satoshi Nakamoto's design philosophy.

Notably, Todd has had close technical exchanges with Adam Back (the inventor of Hashcash). In Bitcoin's PoW mechanism, Back's Hashcash is one of the core inspirations for Bitcoin's proof of work, and Todd is a staunch defender of Bitcoin's PoW mechanism. He believes that Bitcoin's PoW mechanism is a crucial design for ensuring the security and decentralization of the Bitcoin network and must be protected and refined.

Todd is suspected of being Satoshi Nakamoto primarily due to his deep understanding of the Bitcoin network, his firm belief in decentralization, and his mysterious low profile within the community. Although he is one of the core figures in Bitcoin development, he rarely engages in personal promotion or public activities. His style of conduct closely resembles Satoshi Nakamoto's: low-key, pragmatic, and possessing a clear vision for the future development of Bitcoin.

Additionally, Todd's "perfectionism" in technology has led to speculation about whether he could be Satoshi Nakamoto. He advocates that Bitcoin's core code should be concise, efficient, and nearly free of vulnerabilities. This extreme security standard not only requires developers to possess high technical skills but also necessitates a profound understanding of system architecture and unique philosophies. This aligns closely with the rigorous style of the Bitcoin white paper and Satoshi Nakamoto's demands for code quality.

In the face of external speculation, Peter Todd has never claimed to be Satoshi Nakamoto. He has repeatedly stated that he is merely a member of the Bitcoin community and hopes to use his technical expertise to ensure the security of the Bitcoin network. However, Todd has not publicly denied this possibility; he believes that the decentralized spirit of Bitcoin is what truly matters, and the identity of the founder is not significant.

Todd believes that Satoshi Nakamoto's choice of anonymity is a "symbol of decentralization" for Bitcoin. He admires Satoshi Nakamoto's "retirement" approach, believing that the future of Bitcoin should not be influenced by any individual, a point that has been validated in Bitcoin's development. Todd consistently upholds Bitcoin's open-source characteristics and decentralized management, believing that this characteristic is the core value of Bitcoin. His responses are subtle and mysterious, neither denying nor confirming external speculation, which further convinces people that he may be one of the candidates for the identity of "Satoshi Nakamoto."

4.9 Candidate 9: Len Sassaman

Len Sassaman was a respected cryptographer and privacy advocate who left a profound mark in the fields of computing and cryptographic technology. Born in 1976, Sassaman was passionate about online privacy and personal information protection from a young age. He was an active member of the Cypherpunk community, exploring how to defend information freedom through technological means alongside other technical geeks and privacy advocates. As a computer scientist, Sassaman firmly believed that technology could achieve the protection of personal privacy rights, dedicating significant time and effort to researching how to use cryptographic technology to ensure network security.

Sassaman achieved remarkable accomplishments in cryptography, playing a key role in the development of the anonymous email network Mixmaster Remailer. Mixmaster is a distributed anonymous email system that helps users hide their identities and protect their privacy. As a core developer of this project, Sassaman made significant contributions to the protection of online privacy through cryptography and anonymous communication. His philosophy aligns closely with Bitcoin's designs of decentralization and anonymity, making him a potential candidate for "Satoshi Nakamoto."

Sassaman was not only a technical expert but also an active privacy advocate. Before the birth of Bitcoin, he was already a leading figure in the field of cryptography, frequently giving speeches in academia and among privacy activists to promote the importance of privacy protection. His technical expertise spans cryptography, network security, and decentralized systems, which are precisely the core components of the Bitcoin system.

Sassaman also served as a researcher at the University of Leuven in Belgium, deeply studying privacy protection, encrypted communication, and the security of distributed systems. With his deep understanding of cryptography and privacy protection, Sassaman's technical achievements earned him widespread respect in the cryptographic community. He collaborated with several renowned cryptography experts, including the famous Phil Zimmermann (founder of the PGP encryption system), working together on privacy protection projects, making him an important figure in the field of cryptography.

Sassaman's activities in the Cypherpunk community are a significant reason he is viewed as a candidate for "Satoshi Nakamoto." The Cypherpunk community is a group of cryptographic technology geeks who generally believe in the ideals of decentralization and information freedom. Sassaman maintained close relationships with many heavyweight figures in the cryptographic community, including Hal Finney, Nick Szabo, and Adam Back, all of whom directly or indirectly influenced the birth of Bitcoin. The atmosphere of the Cypherpunk community promotes privacy protection, technological innovation, and decentralized currency systems, which aligns closely with Bitcoin's design philosophy.

As a member of the Cypherpunk community, Sassaman shared the same ideals as the Bitcoin community, supporting the establishment of a network system that is not controlled by central institutions and protects personal privacy. The release date of the Bitcoin white paper (2008) coincided with a critical period when the Cypherpunk community was focusing on cryptocurrency and decentralized finance, further deepening public speculation about Sassaman possibly being "Satoshi Nakamoto."

In July 2011, Len Sassaman tragically passed away at the age of 31. His sudden death shocked the cryptography and privacy protection communities. Shortly after his death, people noticed that Satoshi Nakamoto's online activities also abruptly ceased in the same year. Satoshi Nakamoto gradually faded from the Bitcoin development community in 2010, and after Sassaman's death in 2011, Satoshi Nakamoto has not appeared online again. This coincidence sparked widespread speculation about whether Sassaman was indeed Satoshi Nakamoto.

Many believe that Sassaman's death may have been the reason for Satoshi Nakamoto's sudden "disappearance." The design philosophy of Bitcoin, its spirit of decentralization, and Sassaman's advocacy for privacy protection are strikingly similar, and his influence in the cryptographic community and deep understanding of decentralized systems align with the technical needs of Bitcoin. Although there is no direct evidence proving that Sassaman is the founder of Bitcoin, the overlap between Satoshi Nakamoto's "retirement" and Sassaman's death cannot be overlooked.

Sassaman's technical capabilities fully meet the development needs of the Bitcoin system. He was not only familiar with cryptographic algorithms and decentralized systems but also excelled in building anonymous communication systems. The Mixmaster anonymous email system he developed shares similarities with Bitcoin's privacy protection features, demonstrating his persistent pursuit of anonymity and security. Sassaman's programming style and security standards were also very high, consistent with the concise, rigorous, and bug-free characteristics of Bitcoin's code.

Additionally, Sassaman's firm belief in privacy protection kept him low-key, rarely discussing his personal life. This low-profile approach closely resembles Satoshi Nakamoto's practice of anonymously publishing Bitcoin. Sassaman believed that decentralized systems should not rely on any individual or centralized institution but should be maintained collectively by all users, aligning closely with Bitcoin's decentralization philosophy. Although he never publicly stated that he participated in Bitcoin's development, his ideals, technical abilities, and choice of anonymity make him a strong candidate for the identity of "Satoshi Nakamoto."

5 The Mystery of Satoshi Nakamoto's Disappearance

5.1 Final Remarks and Departure

Last Activity Records of Satoshi Nakamoto

• Last Message: Satoshi Nakamoto left his last message on the Bitcoin forum in December 2010. In this message, he mentioned some technical updates and the development direction of Bitcoin but did not disclose any personal information or hint at his impending departure.

• Last Email Before Departure: In April 2011, Satoshi Nakamoto stated in an email to Bitcoin developers that he was "moving on to other things," which became his final farewell to the Bitcoin community. This email had a calm tone and did not explain the reasons, and this simple statement sparked countless speculations.

Timing and Background of the Disappearance

• Expansion of the Bitcoin Community: At the time of Satoshi Nakamoto's departure, the Bitcoin community had already established a certain scale. Core developers like Gavin Andresen took over the management and technical maintenance of the Bitcoin network. Satoshi Nakamoto may have believed that the network's stability and user scale had allowed Bitcoin to move beyond the early reliance on its founder.

• Technical Stability and Early Market Maturity: In 2010, the Bitcoin market gradually developed, with prices first breaking the $1 mark. This indicated that the market demand and technology of Bitcoin were maturing, possibly leading Satoshi Nakamoto to believe that his mission was complete, prompting his decision to retire.

5.2 Analysis of Motivations Behind the Retirement

Avoiding Legal and Security Risks

• Potential Legal Pressure: The decentralization and anonymity of Bitcoin pose a potential threat to the traditional financial system, and some governments began questioning the legality and compliance of Bitcoin. Satoshi Nakamoto may have chosen to retire to avoid legal pressures from financial regulatory agencies, preventing himself from becoming a target due to Bitcoin's popularity.

• Considerations for Personal Safety: As the founder of cryptocurrency, Satoshi Nakamoto may face threats from governments, banks, or even hackers due to his identity and technology. Anonymity and retirement not only protect his personal safety but also allow Bitcoin to operate free from the control of any specific individual, reducing the likelihood of being attacked.

Avoiding Personal Worship and Maintaining Decentralization Ideals

• Symbolic Decision for Decentralization: Satoshi Nakamoto has always adhered to the philosophy of decentralization, and his anonymous identity and eventual retirement further reinforce this idea. If he remained active in the Bitcoin community, it might lead to the concentration of decision-making power in individuals, contradicting the original intention of decentralization.

• Avoiding Founder Effect: In many technical communities, founders are often idolized, and personal preferences and opinions can significantly influence community development. Satoshi Nakamoto's retirement allowed the Bitcoin community to achieve true decentralized management and development without "centralized" leadership.

5.3 Bitcoin Development After Satoshi Nakamoto's Disappearance

Decentralized Management Practices in the Community

• Transition Period with Gavin Andresen's Succession: After Satoshi Nakamoto's retirement, Gavin Andresen took over the management of the Bitcoin project as a core developer. During this process, Andresen did not centralize the management of the Bitcoin network but encouraged community participation in an open-source manner, continuing to maintain Bitcoin's decentralized characteristics.

• Establishment of the Bitcoin Foundation: In 2012, the Bitcoin Foundation was established to support the development and promotion of Bitcoin. Although the foundation undertook some management functions, its operation method of "decentralized technology not relying on centralized management" aligns with Satoshi Nakamoto's philosophy.

Technical Updates and Community Consensus

• BIP (Bitcoin Improvement Proposals) Proposal Mechanism: After Satoshi Nakamoto's departure, the Bitcoin community adopted the BIP proposal mechanism, allowing developers to propose technical improvement suggestions, which are voted on by nodes across the network to decide whether to implement. The implementation of this mechanism ensures the democratic nature of Bitcoin's technological development, allowing the system's evolution to align with community consensus.

• Debates on Scalability and Forks: After Satoshi Nakamoto's departure, the Bitcoin network encountered technical disputes such as scalability issues. In these matters, the Bitcoin community still reached decisions through decentralized consensus. For example, the Bitcoin network forked into Bitcoin Cash (BCH) in 2017, showcasing the continuation of Satoshi Nakamoto's philosophy—the community has the right to make autonomous decisions, and the system does not rely on a single "authority" to reach consensus.

Insights from Satoshi Nakamoto's Departure on the Cryptocurrency Ecosystem

• Validation of Decentralization's Durability: Satoshi Nakamoto's departure required the Bitcoin network to rely on its decentralized consensus mechanism to maintain stability. This practice proved the feasibility of decentralization philosophy while enhancing the Bitcoin network's resistance to interference and longevity.

• Inspiration for Other Decentralized Projects: Satoshi Nakamoto's retirement inspired other blockchain projects to adhere to decentralized management methods, downplaying the role of founders in projects and promoting self-management within decentralization.

6 Satoshi Nakamoto's Wealth and Future Impact

6.1 Satoshi Nakamoto's Bitcoin Wealth

Satoshi Nakamoto's Bitcoin Holdings

• Genesis Block and Early Mining: On January 3, 2009, Satoshi Nakamoto mined the Bitcoin genesis block, obtaining the first 50 Bitcoins. In the early days of the Bitcoin network, due to its small scale and low mining competition, Satoshi Nakamoto accumulated a large amount of Bitcoin through mining. It is estimated that Satoshi Nakamoto holds approximately 1 million Bitcoins, accounting for 4.76% of the total Bitcoin supply.

• Tracking Wallet Addresses: Researchers have identified these Bitcoin addresses through blockchain analysis, but these Bitcoins have remained in a "dormant" state since Satoshi Nakamoto acquired them, never being transferred or spent. These "sleeping" Bitcoins are distributed across about 20,000 addresses, which have consistent blockchain record characteristics and have not been utilized, believed to belong to Satoshi Nakamoto.