What happened
Canada's largest exchange said its founder had died taking the only keys with him. The keys turned out to be beside the point, because the coins had been gone for years.
| When | January 2019 |
| What kind of failure | Exchange collapse |
| What it cost | About 190 million Canadian dollars owed to 76,000 customers |
The version the public saw
QuadrigaCX was the main on ramp for Canadians buying bitcoin, and its founder Gerald Cotten was a familiar face at industry events. Customer balances appeared normally in the interface. The company described its holdings as being kept safely in cold storage that only Cotten could reach, and presented that as security rather than as a risk.
Underneath the same period
There was no meaningful cold storage. Cotten had been running the exchange as a Ponzi, crediting customer accounts with currency that did not exist, trading against his own customers on his own platform under false names, and covering withdrawals with other customers' deposits. An Ontario Securities Commission review later described it plainly as an old fashioned fraud.
The sequence
A death is announced
In January 2019 the company said Cotten had died in India the previous December of complications from Crohn's disease.
The keys are said to be lost
QuadrigaCX told a court that Cotten alone held the keys to the cold wallets and that the funds were therefore unreachable.
Researchers look at the chain
Independent analysts examined the addresses the company identified and found the cold wallets had been empty since April 2018, months before the death.
The regulator publishes
The Ontario Securities Commission concluded that the shortfall was caused by Cotten's fraudulent trading, not by any lost key.
The signals, before anybody knew the ending
None of these needed hindsight. Each one was public, or checkable, while the money was still there.
- One person with sole control of everything, described publicly as a feature
- No independent audit and no proof of reserves
- A platform where the operator could trade against its own customers
- A company registered nowhere that regulated a securities business
The aftermath
The bankruptcy trustee recovered a fraction of what was owed. No criminal charges have been brought, because the only person charged would have been Cotten. The absence of a body in Canada and the timing have kept a persistent public theory alive that he faked his death, for which no evidence has been produced.
The part that changes what you do
"Only one person can access the funds" is not a security model, it is a single point of failure with a marketing department. Any platform that cannot show reserves independently is asking you to accept its own word about the one fact that matters.
Common questions
Was Gerald Cotten's death real?
Did the lost keys actually matter?
How much did customers get back?
Where to go next
Other cases like this one
Would your setup have survived this?
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