History of Bitcoin Part 2: Pizza, Mt. Gox, and the First Bull Runs (2010–2017)

Following Bitcoin's quiet birth and Satoshi Nakamoto's departure, the period from 2010 to 2017 marks the protocol's tumultuous adolescence. This was an era of firsts: the first real-world transaction, the first speculative bubbles, the first major exchange collapse, and the first ideological civil war. Bitcoin shed its status as a purely academic curiosity and became a volatile, controversial, and undeniably potent financial asset. This chapter explores how a transaction for pizza birthed an economy, how a darknet market provided the first killer app, and how internal conflict ultimately forged a more resilient network ahead of a monumental price explosion.

Bitcoin Pizza Day and the Birth of Real-World Value

For over a year after its creation, Bitcoin had a theoretical value but no concrete price. It was mined by a handful of cypherpunks and cryptographers, exchanged between them as a novelty. That changed on May 22, 2010. A Florida-based programmer named Laszlo Hanyecz posted a request on the Bitcointalk forum: he was willing to pay 10,000 BTC to anyone who would order and deliver two large pizzas to his house. At the time, this was a simple barter, a way to transform digital tokens into a tangible good.

A teenager in England, Jeremy Sturdivant ("jercos"), accepted the offer. He ordered the two Papa John's pizzas for Hanyecz, paying about $41 with his credit card, and received the 10,000 BTC in return. This transaction, now immortalised as "Bitcoin Pizza Day," was the first documented instance of Bitcoin being used to purchase a physical item. It established an implicit exchange rate and proved that BTC could function as a medium of exchange, however inefficiently at first.

"I just want to report that I successfully traded 10,000 bitcoins for pizza... I got two large pizzas. They were pepperoni, and I ate it all. But yeah, it was an interesting thing. I didn't think that it would be as popular as it has become." — Laszlo Hanyecz, in a later interview

This milestone coincided with the emergence of the first Bitcoin exchanges. While early trading was done over-the-counter on forums, the establishment of Bitcoin Market in March 2010 and the more infamous Mt. Gox in July 2010 provided formal venues for price discovery. Mt. Gox, originally a trading site for "Magic: The Gathering Online" cards created by Jed McCaleb, was repurposed to trade Bitcoin. Its early dominance would become a central, and ultimately catastrophic, part of Bitcoin's story.

Silk Road and Bitcoin's Dark Reputation (2011–2013)

While the pizza transaction gave Bitcoin a proof-of-concept for commerce, its first major use case came from a much darker corner of the internet. In February 2011, a hidden service on the Tor network called Silk Road launched. Created by Ross Ulbricht under the pseudonym "Dread Pirate Roberts," Silk Road was an anonymous marketplace primarily for illicit drugs, using Bitcoin as its exclusive payment method.

Bitcoin's properties—decentralization, censorship-resistance, and pseudonymity—made it the ideal currency for such an operation. Transactions could be sent peer-to-peer without intermediaries, and while the blockchain is a public ledger, wallet addresses are not inherently tied to real-world identities. This provided a sufficient layer of privacy for the site's users, at least in theory.

The site's notoriety exploded after a June 2011 article on Gawker titled "The Underground Website Where You Can Buy Any Drug Imaginable." This mainstream exposure had a dual effect. It introduced Bitcoin to a massive new audience and created a significant source of demand, driving the price from under $1 to a peak of $32 in mid-2011. However, it also cemented Bitcoin's reputation in the public and regulatory eye as a tool for criminals and money launderers—a stigma the industry would spend years trying to overcome.

The Silk Road saga ended on October 2, 2013, when the FBI arrested Ross Ulbricht in a San Francisco library and shut down the site. The agency seized 144,000 BTC from Ulbricht and the site's servers. The event demonstrated that Bitcoin was not a magic cloak of invisibility; poor operational security could still lead to deanonymization. Yet, for the Bitcoin network itself, it was a moment of validation. A billion-dollar enterprise was shut down, but the protocol kept running, processing blocks every ten minutes, completely indifferent. It proved the network's resilience against even state-level actors.

The First Bull Run and Mt. Gox Collapse (2013–2014)

The year 2013 was a watershed moment for Bitcoin's price. The asset experienced two distinct and powerful bull runs that took it from obscurity into the financial mainstream. The first rally occurred in the spring of 2013, when the price surged from around $13 to a peak of over $260 in April. A primary catalyst was the banking crisis in Cyprus, where the government imposed capital controls and bail-ins on bank deposits. This event highlighted Bitcoin's value proposition as a non-sovereign, seizure-resistant asset, attracting a wave of European interest.

After a sharp correction, a second, even more dramatic rally began in late 2013. Fueled by intense speculative interest from China and increasing media coverage, the price soared. In November 2013, Bitcoin's price crossed the $1,000 mark for the first time, eventually peaking at $1,242 on the Mt. Gox exchange. At this point, Mt. Gox was the undisputed king of Bitcoin trading, reportedly handling over 70% of global transaction volume. Its price feed was the de facto reference for the world.

This dominance made its downfall all the more devastating. Throughout late 2013 and early 2014, users reported extreme delays in withdrawing both fiat and Bitcoin from the exchange. On February 7, 2014, Mt. Gox abruptly halted all BTC withdrawals, blaming a technical issue in the Bitcoin protocol known as "transaction malleability."

On February 24, 2014, the exchange went offline, and the company filed for bankruptcy protection, announcing that approximately 850,000 bitcoins belonging to customers and the company were missing. This amounted to roughly 7% of the entire Bitcoin supply at the time, valued at over $450 million. The price crashed, and a prolonged bear market, often called "crypto winter," ensued. The price would not see its 2013 highs again for over three years.

"The reality of a Bitcoin exchange is that you are not just managing a website. You are the custodian of people's assets, and that's a whole other level of responsibility." — A paraphrase of sentiments from Mark Karpelès, CEO of Mt. Gox, post-collapse

The Mt. Gox disaster taught the community a hard and expensive lesson: "not your keys, not your coins." Trusting a centralized third party with your assets introduced counterparty risk that Bitcoin was designed to eliminate. This event spurred the development of more secure exchanges and gave rise to the hardware wallet industry, emphasizing the importance of self-custody. Learning to secure your own assets with a device like a Ledger became a rite of passage. For a primer on best practices, check our guide on Learn More: Crypto Security Best Practices.

The Block Size Wars (2015–2017)

As Bitcoin recovered from the Mt. Gox fallout, it faced an existential crisis from within. The core of the debate, known as the "Block Size Wars," was about how to scale the network to accommodate more users and transactions. Satoshi had implemented a 1 megabyte (MB) limit on block size early in Bitcoin's history to prevent spam and ensure the network remained decentralized. By 2015, with rising adoption, this limit was becoming a bottleneck. Blocks were filling up, leading to a competitive fee market and slower confirmation times.

Two main factions emerged with deeply entrenched, opposing philosophies.

The "big blockers" argued for a straightforward solution: increase the 1MB block size limit via a hard fork. Proponents like Gavin Andresen (who Satoshi had handed lead developer duties to), Roger Ver (an early investor known as "Bitcoin Jesus"), and Jihan Wu (co-founder of mining giant Bitmain) believed this was essential for Bitcoin to achieve its goal of being a peer-to-peer electronic cash system for the world. To them, low fees and fast on-chain transactions were paramount.

"If transaction fees rise too high, Bitcoin will not be usable for most of the world’s population... We need to allow it to scale so that everyone in the world can use it." — A sentiment widely expressed by Roger Ver during the scaling debate.

The "small blockers," including most of the Bitcoin Core development team, opposed this approach. They contended that increasing the block size would make it more expensive to run a full node (due to increased storage and bandwidth requirements), leading to centralization of nodes in data centers. This, they argued, would compromise Bitcoin's core properties of censorship resistance and trustlessness. They instead championed second-layer solutions like the Lightning Network and a protocol upgrade called Segregated Witness (SegWit), which could provide a modest capacity increase and fix transaction malleability without a contentious hard fork.

The debate raged for over two years on forums, social media, and at conferences. It was a technical, political, and philosophical battle for Bitcoin's soul. Compromises were proposed and rejected. The conflict highlighted the difficulty of governing a decentralized system with no formal leadership, but also the strength of its consensus mechanism, which prevented any single group from unilaterally imposing its vision.

The 2017 Mania: ICOs, SegWit, and $20,000 BTC

The year 2017 was the explosive culmination of the forces building over the previous years. The scaling debate reached its climax. Dissatisfied with the direction of Bitcoin Core, the big block contingent forced the issue. On August 1, 2017, they initiated a hard fork at block 478,558, creating a new version of Bitcoin with an 8MB block size: Bitcoin Cash (BCH).

Meanwhile, the original Bitcoin chain moved forward with its own scaling plan. Through a clever mechanism known as a User Activated Soft Fork (UASF), the community signaled strong support for SegWit. Miners, seeing the economic consensus, fell in line. On August 24, 2017, Segregated Witness was successfully activated on Bitcoin at block 481,824. The resolution of this long-standing conflict, despite the chain split, was seen as a major victory for Bitcoin's governance model and cleared the path for future development.

Parallel to this, the Initial Coin Offering (ICO) craze was reaching a fever pitch on the Ethereum network. Thousands of new crypto projects raised billions of dollars by issuing tokens, creating a huge influx of new participants and capital into the digital asset space. While most ICOs were funded with Ether, Bitcoin was the primary gateway asset. New investors bought Bitcoin on exchanges like Coinbase, then used it to speculate on these new tokens, creating immense buy pressure.

This perfect storm of resolved scaling debates, a massive influx of retail capital, and relentless media hype propelled Bitcoin into a parabolic advance. The price, which started the year under $1,000, smashed through one psychological barrier after another. This was a classic cycle peak, driven by pure retail FOMO. You can track current and historical patterns on our Live Data: Market Cycles page. The run was also preceded by the 2016 Bitcoin Halving, which cut the new supply of BTC in half, a recurring catalyst for bull markets.

On December 17, 2017, the price of Bitcoin reached its cycle peak of approximately $19,783. The launch of Bitcoin futures contracts on the CME and CBOE exchanges in that same month was seen by many as the final speculative top. What followed was a swift and brutal 84% correction, ushering in the next crypto winter and setting the stage for the next phase of Bitcoin's evolution: the battle for institutional adoption.

Series Navigation

This entry is Part 2 of a three-part series on the history of Bitcoin.

• Part 1: The Genesis Block and Satoshi's Vision (2008–2010)
• Part 2: Pizza, Mt. Gox, and the First Bull Runs (2010–2017)
• Part 3: Institutional Adoption and the ETF Era (2018–Present)