The Inside Story of Mt. Gox, Bitcoin's $460 Million Disaster (2024)

By the fall of 2013, Mt. Gox's business was also a mess. Federal agents had seized $5 million from the company's U.S. bank account, because the company had not registered with the government as a money transmitter, and Mt. Gox was being sued for $75 million by a former business partner called CoinLab. U.S. customers complained of months-long delays withdrawing dollars from the exchange, and Mt. Gox had tumbled from the world's number one bitcoin exchange to position number three.

But Karpeles was obsessed with a new project: The Bitcoin Cafe. Inspired by a French bistro, it would be a stylish hang-out located in the same building as the Mt. Gox offices, a very-new-looking building of metal and glass within walking distance of Tokyo's largest train station. You could drop by for a beer or some wine, and -- using a cash register proudly hacked by Mark Karpeles -- you could buy it all with bitcoin. When WIRED tried to meet with Karpeles and Mt. Gox at their offices this past October -- and a company representative turned us away, saying that legal reasons prevented Mt. Gox from talking to the press -- the placard in the lobby of the building already identified the cafe. This company representative said it would open by the end of the year. It never did.

One insider says that Mt. Gox spent the equivalent of $1 million on the cafe venture, renovating Mt. Gox's office building to Karepeles' specifications. At a time when Gox's business was falling apart, this insider says, the project was a major distraction. "[Karpeles] was super-proud of being able to use his hacked cash register with the code he wrote," this insider says.

Says another insider: "Aside from the cafe, he liked to spend time fixing servers, setting up networks and installing gadgets... probably distracting himself from dealing with the real issues that the company was up against."

Then, in February, the company's fortunes took another turn. Mt. Gox stopped paying out customers in bitcoins, citing a flaw in the digital currency, and after days of silence from the company, protesters turned up outside its offices, asking whether it was insolvent.

Years-Long Hack

According to a leaked Mt. Gox document that hit the web last week, hackers had been skimming money from the company for years. The company now says that it's out a total of 850,000 bitcoins, more than $460 million at Friday's bitcoin exchange rates. When bitcoin enthusiast Jesse Powell heard this, he was reminded of June 2011.

After Mt. Gox was hacked for the first time in summer of 2011, a friend asked Powell to help out, and soon, the San Francisco entrepreneur found himself on a plane to Tokyo. After landing, he rushed to Shibuya station, where he was met by his friend, Roger Ver, one of the world's biggest bitcoin supporters who just happened to live across the street from Mt. Gox. Without bothering to drop off Powell's bags, the two rushed to the Mt. Gox offices to see what they could do. They worked through the week with Karpeles, other employees, and a handful of other bitcoin enthusiasts. They answered support inquires, did troubleshooting on the site, and tried to support the tiny company in any way they could. At one point, Powell rushed to the Apple store and came back with $5,000 worth of computers that could support the cause. But two days later, the site was still offline.

Ver and Powell were set to work through the weekend, but when they arrived at the company's tiny office that Saturday, there was a surprise. Mark Karpeles had decided to take the weekend off. The two volunteers were flabbergasted. "I thought that was completely insane and demoralizing for the rest of the team," Powell remembers. On Monday, Powell says, Karpeles did return to work, but he spent part of the day stuffing envelopes. "I was like: 'Dude why are you doing this? You can do this anytime. The site is offline. You need to get the site online.'"

Powell last met with Karpeles in January, before news of the latest hack broke. He now runs a competitor to Mt. Gox called Kraken. They had lunch in Tokyo, and Karpeles seemed unworried about Gox's future. He was excited about his Bitcoin Cafe. "It was probably some light for them in a very dark world of dealing with banks and customer complaints all day," Powell says. "I'm sure that Mark has been very stressed for a long time and probably the Bitcoin Cafe was a fun project." But now that world is even darker.

The Inside Story of Mt. Gox, Bitcoin's $460 Million Disaster (2024)

FAQs

Did Mt. Gox customers get money back? ›

Gox said on Friday that it started making repayments to customers, ending a near 10-year wait for some users to get their crypto back after a 2014 hack sent the crypto exchange into bankruptcy. The company was once the world's top crypto exchange, handling over 70% of all bitcoin (BTC) transactions in its early years.

What is the story behind Mount Gox? ›

Gox was originally created by Jed McCaleb in 2006 as a platform for trading cards from the game "Magic: The Gathering." In 2010, McCaleb repurposed the site to become a bitcoin exchange. McCaleb sold Mt. Gox to Mark Karpelès in March 2011 and later co-founded Ripple, then Stellar.

How much money was stolen from Mt. Gox? ›

On February 28 of that year, Mt. Gox filed for bankruptcy. Hundreds of thousands of bitcoin—back then worth around $400 million, now $45 billion—had been stolen in an elaborate heist, the company said. It had practically no remaining funds with which to process withdrawals.

How much was bitcoin when Mt. Gox was hacked? ›

Gox and its former CEO. Greene said at the time that his frozen account contained $25,000 in bitcoin, though he didn't disclose the exact number of coins in his wallet. Bitcoin was then trading at roughly $600. Today it's worth over $60,000.

How much is Mt. Gox payout? ›

Cryptocurrencies plunged Friday as investors focused on the payout of nearly $9 billion to users of collapsed bitcoin exchange Mt. Gox.

How much money has been lost in crypto hacks? ›

Crypto Hacks Totaled $19B Since 2011: Crystal Intelligence

Over $473 million worth of cryptocurrency has been lost to hacks and rug pulls across 108 incidents in 2024, according to a report by security service provider Immunefi.

How many new bitcoins are created every day? ›

Projected Timelines for Mining the Remaining bitcoins

As of now, the rate of new Bitcoin creation is set at 6.25 BTC per block, which equates to approximately 1 block every 10 minutes. This means that roughly 900 new BTC are generated daily.

How many bitcoins are there? ›

How Many Bitcoins Are There Now in Circulation?
Total BTC in Existence19,765,900
Bitcoins Left to Be Mined1,234,100.0
% of Bitcoins Issued94.123%
New Bitcoins per Day900
Mined Bitcoin Blocks852,544

How to mine a bitcoin? ›

Bitcoin mining requires the mining program to generate a hash and append another number to it called the nonce, or "number used once." When a miner begins, it always starts this number at zero. The nonce changes by one every attempt—first, it's 0, then 1, 2, 3, and so on.

Who was the man that stole bitcoin? ›

James Zhong

Who created bitcoin? ›

Based on a free market ideology, bitcoin was invented in 2008 by Satoshi Nakamoto, an unknown person. Use of bitcoin as a currency began in 2009, with the release of its open-source implementation.

How many bitcoin's are in lost wallets? ›

These 1.8 million “lost” coins account for around 8.5% of the total supply of 21 million—93% of which have already been mined—that will ever exist. In most cases, it's impossible to know for sure what became of a given wallet, but it's a safe bet many are indeed gone forever.

Did Mt. Gox get their money back? ›

Gox said. After declaring bankruptcy, 140,000 of the missing bitcoin were recovered, which means roughly $9 billion worth of bitcoin will be returned to owners, in today's prices. Bitcoin was trading at roughly $600 at the time of the bankruptcy.

Why did Mt. Gox collapse? ›

In a few days, bankrupt Tokyo-based bitcoin exchange Mt. Gox will begin paying back thousands of users almost $9 billion worth of tokens. The platform went under in 2014 following a series of heists that cost it in the range of 650,000 to 950,000 bitcoins, or upward of $59 billion, at current prices.

What is the biggest bitcoin heist in history inside the implosion of Mt. Gox? ›

Mt. Gox, which was once the world's largest exchange for the decentralized virtual currency, filed for bankruptcy protection in February 2014, when it was reported that 850,000 bitcoins, worth $450 million at the time, had disappeared or been stolen by hackers. Mt. Gox said it also lost $27 million in cash.

How much has bitcoin returned? ›

Annual returns
YearReturn
202172.70%
2020270.28%
201997.82%
2018-72.13%
8 more rows

What was the bitcoin price in 2014? ›

Bitcoin spent the rest of the year gradually declining and closed 2014 at about $318. The year 2015 started with Bitcoin declining, but most of the year was a slow uptrend, unusual for Bitcoin, and it ended the year at $430.

What happened to gox? ›

Gox took a devastating hit in the largest Bitcoin hack to date. Hackers accessed and stole 740,000 bitcoin from Mt. Gox customers and 100,000 from the company itself, roughly the equivalent of $460 million at the time. The event quickly spiraled out of control and the company was bankrupt by the end of February 2014.

When did Mt. Gox go down? ›

On 24 February 2014, Mt. Gox suspended all trading, and hours later its website went offline, returning a blank page. A leaked alleged internal crisis management document claimed that the company was insolvent, after having lost 744,408 bitcoins in a theft which went undetected for years.

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