Written by: Techub News Compilation

Introduction

Recently, Coinbase co-founder and CEO Brian Armstrong appeared on renowned producer Rick Rubin's dialogue podcast "Tetro," engaging in a deep conversation that lasted over two hours. As the helm of the world's most influential cryptocurrency trading platform, Armstrong reflected on his personal growth and the founding story of Coinbase, systematically sharing his thoughts on Bitcoin, stablecoins, prediction markets, smart contracts, and the future direction of the cryptocurrency industry. This dialogue occurred against the backdrop of multiple cycles in the cryptocurrency market and the deepening mainstream adoption, which holds significant value for understanding how this industry leader views the essence of cryptocurrency, its challenges, and its impact and reconstruction of traditional financial systems.

Summary

• Early experiences shape financial views: Witnessing hyperinflation in Argentina and experiencing the inefficiencies and fragmentation of global payment systems while working at Airbnb were core driving forces behind Armstrong's venture into the cryptocurrency field.
• Entrepreneurial journey and product evolution: Coinbase started as a simple Bitcoin wallet application; through direct communication with early users, the critical need for a "purchase button" was discovered, leading to a transformation into a trading platform and finding product-market fit.
• Positioning of Bitcoin: Armstrong views Bitcoin as "digital gold," a decentralized means of value storage, whose unique issuance mechanism and consensus algorithm make it difficult for any single entity to control.
• The immense potential of stablecoins: Armstrong believes stablecoins (such as USDC) are the second application in the cryptocurrency space to achieve a large-scale product-market fit after trading, as they provide a cheap and fast US dollar payment channel globally.
• The revolutionary aspect of prediction markets: Prediction markets are not only trading tools but also sources of high signal-to-noise ratio "truth signals," which may influence policy-making, as they allow those with vested interests to "bet" on the authenticity of information.
• Smart contracts and future outlook: Smart contracts codify legal terms, enabling the automatic and unambiguous execution of complex agreements, serving as infrastructure for building the next generation of decentralized applications (such as decentralized stablecoins and identity systems).

From Argentina's hyperinflation to the Bitcoin whitepaper

Brian Armstrong's journey in cryptocurrency began with his early personal experiences rather than pure technical enthusiasm. He recalled living in Argentina for a year and witnessing how hyperinflation destroyed the lives of ordinary people, especially the poor who could only hold cash. This experience made him acutely aware of the "survival level" disaster that a malfunctioning financial system can bring. Armstrong admitted that had he lived in a more stable financial environment like the United States, he might not have developed such a strong impulse for change.

Another key experience occurred during his tenure as an early employee at Airbnb. The company needed to handle funds flowing in and out from about 180 countries, and Armstrong personally felt the "brokenness" and inefficiency of this process. For example, paying hosts in places like Cuba or Ecuador was prohibitively high in fees and opaque, sometimes requiring channels resembling "black markets" or "cartels," with the final amounts being hard to predict. This made him realize that the existing global financial system was a "patchwork" made up of different private technologies, with a few monopolistic entities controlling each country, leading to extremely low efficiency.

In December 2010, while vacationing at his parents' home, Armstrong accidentally read Satoshi Nakamoto's Bitcoin whitepaper on Hacker News. The whitepaper described a protocol that was global and decentralized, like the internet, but designed for transferring value rather than information. The idea immediately captivated him. "It's a very interesting idea. I don't know if it will work. Maybe the government will shut it down, or maybe there are flaws not yet discovered," Armstrong recalled, but he couldn't stop thinking about it. Over the next six months, he repeatedly studied the whitepaper and began attending early Bitcoin meetups in San Francisco, where a diverse group from top computer science PhDs to anarchists and even those starting their own religions gathered, forming a "wonderful mélange."

Like many early explorers, Armstrong's initial attempts were not smooth sailing. He, along with a college friend Brandon, developed an open-source Bitcoin wallet application in their spare time but soon discovered a fundamental flaw in the design: it ran a complete Bitcoin node on mobile devices, requiring the entire blockchain to synchronize every time the app was opened, leading to overheating and rapid battery drain. Armstrong viewed this as a valuable lesson: "Action generates information." Even starting from the wrong thing can help you find the right direction. "Without that iteration, the next one couldn't happen. You need to do it first to realize the problem."

Founding Coinbase: Transformation from wallet to trading platform

Despite his growing interest in cryptocurrency, Armstrong still had doubts about whether to pursue entrepreneurship full-time. He tried to persuade Brandon to start a company together, but was declined. The turning point came when he applied to the Y Combinator (YC) incubator. In his second application, he and his team gained YC's favor and received a $150,000 investment. Armstrong specifically mentioned that this investment was tremendously meaningful to him, as it represented the belief of someone he greatly respected, like Paul Graham, which significantly alleviated his self-doubt and compelled him to resign and commit fully.

YC's experience was a typical "pressure cooker" environment, learning and competing alongside dozens of startups. Armstrong revealed that Coinbase's original name was "Bitbank," but on the first day at YC, they were informed by a lawyer that unless they obtained a banking license, the company name could not include "bank," which forced them to hurriedly change the name. This episode also reflects the complexities and immature regulatory framework entrepreneurs in the crypto field need to face, beyond just technical challenges.

At YC's Demo Day, Armstrong attempted to raise $1 million but ultimately only secured $600,000, facing numerous rejections from venture capitalists. "It felt like being hit in the stomach... these are smart individuals who have seen thousands of startups, and they told me the idea was terrible." He summarized that the only people willing to invest were already open to cryptocurrencies. Armstrong believes that successful entrepreneurship often requires finding areas that are "correct but against consensus," and at the time, cryptocurrency was such an area, with its core idea of decoupling money from states and giving individuals more sovereignty over their wealth inevitably eliciting polarized reactions.

After his funding setback, Armstrong fortunately found co-founder Fred Ehrsam. Ehrsam had a background in computer science and economics and previously worked at Goldman Sachs. Armstrong described Ehrsam as not only an extremely hardworking partner but also "someone who can make you feel a bit in awe, challenge you, and is often right." This mutually reinforcing relationship was crucial for early-stage entrepreneurship.

The product evolution of Coinbase serves as a classic example of "user feedback-driven." The initial app was just a wallet that attracted a few hundred user registrations, but very few returned to use it. Following YC's suggestion, Armstrong directly called a few early users for feedback. One user told him: "The app is cool, but I don't have any Bitcoin right now; I'm just looking." This statement sparked an idea for Armstrong: "If there was a button to buy Bitcoin in the app, would you use it?" The user replied, "Oh, possibly." This seemingly simple insight was not an easy feat at the time. To achieve "one-click purchase," they needed to address banking channels, payment methods, and the most challenging legal compliance issues.

Lawyers had informed them that obtaining money transmission licenses from various states in the US could cost $5 million and take four years, which was a pipe dream for a startup with only $600,000 in funding. Ultimately, they found a lawyer willing to provide a legal opinion arguing that they "might not fall under money transmitters," for a fee of $30,000. Following YC's advice, they gritted their teeth and paid this fee, thus allowing them to open a bank account and launch the "buy" feature. The results were immediate: "From that day on, every day, more people came to buy Bitcoin than the previous day, and we had no marketing expenses, it was all organic growth." Coinbase became the most convenient entry point for purchasing Bitcoin in the US at that time.

Success brought new challenges: the surge in trading volume caused a serious mismatch between available bank account funds and daily transaction amounts, leading banks to issue warnings; their early reliance on the Bitcoin exchange Mt. Gox collapsed, forcing them to build their own trading engine. These pressures prompted Coinbase to rapidly evolve from a simple wallet/broker to a fully functional cryptocurrency trading platform. Armstrong summarized, "The lesson I learned from this is: start doing it immediately. You can get stuck in analysis paralysis forever. I think stepping into the unknown itself is very valuable."

Bitcoin as digital gold, stablecoins as the future of payments

In Armstrong's view, Bitcoin occupies a unique and irreplaceable position in the cryptocurrency world. He considers Bitcoin as "digital gold," as it is the "initial form" of cryptocurrency with the highest degree of trust. Its founder, Satoshi Nakamoto, is anonymous, and early tokens have never been moved, ensuring the fairness of issuance. The core value of Bitcoin lies in its nature as a decentralized means of storing value, with a constant total supply that is not controlled by any single entity.

Armstrong pointed out that Bitcoin currently has a market capitalization of about $2 trillion, roughly 10% of gold's market value, and has become one of the best-performing asset classes over the past decade. With events like the approval of Bitcoin spot ETFs in the US and the US government holding Bitcoin, it is rapidly becoming a mainstream asset class adopted by global governments and financial institutions. "Even institutions like Blackstone Group and JPMorgan are getting involved, it has become mainstream."

Regarding Bitcoin's volatility, Armstrong explained that it stems from differing perceptions among market participants about its attributes: some view it as a high-growth asset (similar to Nvidia stock), sensitive to macroeconomic policies (like Federal Reserve rates); others see it as a safe-haven asset akin to gold. Additionally, the "halving" event occurs every four years (reducing mining rewards), which also affects market supply-demand expectations and thereby triggers price fluctuations.

When discussing the practical applications of cryptocurrency, Armstrong believes that after "trading," the second application to achieve a large-scale product-market fit is stablecoin payments. Stablecoins (like USDC) are tokenized representations of fiat currency (typically the US dollar) on the blockchain, achieving a 1:1 peg with fiat currency. Its immense value lies in providing a cheap, fast, and global payment channel.

"Only 4% of the global population lives in the US," Armstrong reminded, "there are billions of people in the world who are eager to hold US dollars due to high inflation in their own currencies (like Turkey, Nigeria), but they cannot open dollar accounts." Stablecoins allow anyone with a smartphone to hold dollar assets and transfer funds anywhere in the world at a cost of less than one cent instantly. In contrast, traditional cross-border payment methods like Western Union often charge exorbitant fees of 5% to 12%, and the speed is slow.

Armstrong emphasized that stablecoins are not limited to individual remittances; there is a much larger market for cross-border payments between businesses (B2B), with an estimated annual transaction volume of $40 trillion globally. "Just as water will always flow to the path of least resistance, payments will flow to the channels with the least friction—cheap, fast, and global." He revealed that the US government holds a positive stance towards stablecoins, and the recently passed "21st Century Financial Innovation and Technology Act" (FIT21 Act) aims to establish a regulatory framework for US dollar stablecoins, as expanding the international use of the dollar is an essential part of US soft power.

Interestingly, Armstrong believes that Bitcoin and stablecoins not only do not threaten the dollar's status but could actually reinforce and extend the dollar's hegemonic position. Stablecoins directly expand the global use of the dollar. Bitcoin, as "digital gold," provides a "check and balance" mechanism for the dollar system: if the US faces significant deficit spending or inflation, people can turn to Bitcoin as a safe-haven asset, which in turn puts fiscal discipline pressure on the US government. "In a strange sense, Bitcoin is helping extend America's experiment."

Prediction markets: More than trading, but a source of truth signals

Armstrong views "prediction markets" as the third potential breakout point in the cryptocurrency field, following trading and payments. Prediction markets allow users to bet on the outcomes of future events (such as elections, sports events, economic indicators). He believes the uniqueness of prediction markets lies in the fact that, for the vast majority of non-trading users, it serves more as a high signal-to-noise ratio source of information, used to gauge what may happen in the future; therefore, it is "more of a competitor to The New York Times than to Nasdaq or the NYSE."

"Because the bettors have a vested interest, rather than some expert with an agenda talking in empty terms," Armstrong explained, this makes prediction markets often capable of providing signals closer to reality. He mentioned a rather controversial topic: Should prediction markets allow "insider trading"?

"If you optimize it as a trading and asset class and wish to maintain market integrity, I would say 'no,' insider trading should not be allowed. But if you optimize it as a source of information and understanding the truth of the world, then you 100% need insider trading because that is the source of real signals." He gave an example that if someone wants to predict whether the Suez Canal will reopen on a specific date, the bets placed by a naval admiral on duty in the canal, who understands the dynamics of the Houthis, would provide the most valuable information.

Armstrong predicts that the application scope of prediction markets will extend far beyond elections and sports events, possibly reaching policy-making areas in the future. Legislators could create prediction markets on economic indicators (such as GDP, unemployment rate) after implementing a certain policy, thereby obtaining a more objective "collective wisdom" regarding the actual effects of the policy, instead of being swayed by various biases and interests. "Prediction markets are like a truth serum."

Smart contracts, decentralization, and the future of the industry

Smart contracts are another foundational technology that Armstrong is optimistic about. It transforms legal terms into automatically executed code, eliminating reliance on intermediaries and ambiguous interpretations of contractual terms. "Currently in companies, this is executed through legal contracts, and every time an explanation is needed, it costs money to hire a lawyer, leading to slow and cumbersome litigation when opinions conflict. If the law is code, it will execute our agreed-upon matters precisely, with no room for interpretation." Armstrong believes that innovations like decentralized stablecoins, stock tokenization, and decentralized identity all rely on smart contracts.

Regarding the paradigm of decentralization—Bitcoin, Armstrong briefly explained how it works: thousands of nodes worldwide run Bitcoin software, competing to package transaction blocks through a "proof-of-work" mechanism. The first node to find the answer to a specific mathematical problem gets to keep the books and receive new Bitcoin rewards. The entire network relies on over 51% of nodes working honestly to maintain security and consensus. Armstrong believes that today's Bitcoin network has such extensive computational power that any single sovereign nation would find it challenging to launch an effective 51% attack.

In contrast, the currently mainstream stablecoins (like USDC, USDT) are issued and held by centralized entities, depending on company reputations, audits, and bank collaborations. Armstrong acknowledged this significant difference from Bitcoin, but he also mentioned that the industry (including the company founded by his friend Brandon) is exploring truly decentralized algorithmic stablecoins, even though this faces challenges like complexity in explanations and establishing trust.

As for the future of traditional financial institutions, Armstrong believes that banks will still play an essential role, but savvy banks have already begun to actively embrace cryptocurrencies. They provide reserve custody services for stablecoins, offer customers cryptocurrency trading channels, and collaborate with infrastructure providers like Coinbase. Coinbase itself is also transitioning from a retail trading platform to providing cryptocurrency infrastructure for institutions, currently partnering with 264 institutions.

Looking ahead, Armstrong proposed the concept of a "Universal Exchange"—where all asset classes (stocks, commodities, etc.) will trade on-chain. For ordinary users, the complexity of cryptocurrencies (similar to the early internet) is being improved through better scalability, user experience (like human-readable addresses replacing complex hashes), and stronger security. He believes that cryptocurrencies will follow a trajectory similar to the development of the internet, evolving from geek toys into mainstream tools, ultimately deeply integrated into and reshaping the global financial system.

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