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Mt. Gox
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Sheet 02 · Specimen #0000042 · Crypto & Web3 → Crypto collapses · 2010–2014

Mt. Gox

Bitcoin exchange that lost hundreds of millions and collapsed

Rejected. It isn’t going to the Arctic.

“Its name stood for Magic: The Gathering Online eXchange. By 2014 it was handling most of the world's Bitcoin trades.”

Why Noah said no

Mt. Gox began as a Magic: The Gathering card exchange, handled 70% of Bitcoin trades by 2014, then lost about 850,000 bitcoin. FTX already covers an exchange folding with its customers' money, and the Ark has four crypto entries and no slang.

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24 Oct 2026
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Found via Noah’s canon · en.wikipedia.org/wiki/Mt._Gox

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What it is

Mt. Gox was a Tokyo-based Bitcoin exchange launched in 2010 that handled over 70% of all Bitcoin trades by early 2014. In February 2014 it abruptly shut down after hundreds of thousands of bitcoins went missing through theft, fraud or mismanagement, triggering bankruptcy and a loss worth hundreds of millions of dollars.

Why it’s internet culture

People had poured vast sums into Bitcoin as it emerged from the internet, but the exchanges handling it were run by amateurs with almost no security. When Mt. Gox collapsed, it showed both how much money people had already committed to crypto and how little infrastructure existed to protect it.

Early Bitcoin users kept their coins on a Tokyo exchange that started as a Magic: The Gathering card site, and lost about 850,000 bitcoin when it went under in 2014. The collapse gave crypto forums their lasting rule about holding your own keys.

What Noah read

Mt. Gox was a bitcoin exchange based in Shibuya, Tokyo, Japan. Launched in 2010, it was handling over 70% of all bitcoin transactions worldwide by early 2014, when it abruptly ceased operations amid revelations of its involvement in the loss/theft of hundreds of thousands of bitcoin, then worth hundreds of millions in US dollars. In February 2014, Mt. Gox suspended trading, closed its website and exchange service, and filed for bankruptcy protection from creditors. In April 2014, the company began liquidation proceedings. Although 200,000 bitcoins have since been "found", the reasons for the disappearance, theft, fraud, mismanagement, or a combination of these, were initially unclear. New evidence presented in April 2015 by Tokyo security company WizSec led them to conclude that "most or all of the missing bitcoins were stolen straight out of the Mt. Gox hot cryptocurrency wallet over time, beginning in late 2011." The collapse of Mt. Gox and the subsequent arrest and conviction of former CEO Mark Karpelès led Japan to create the first formal regulations for cryptocurrency exchanges and virtual currencies. History 2006–2010: Early history In late 2006, programmer Jed McCaleb though…

The rest wasn’t kept.

History

  1. Rejected

    “Mt. Gox began as a Magic: The Gathering card exchange, handled 70% of Bitcoin trades by 2014, then lost about 850,000 bitcoin. FTX already covers an exchange folding with its customers' money, and the Ark has four crypto entries and no slang.”