QuadrigaCX Filing Exposed a C$250 Million Custody Crisis

Court disclosures circulating publicly on February 2, 2019 revealed that Canadian cryptocurrency exchange QuadrigaCX estimated it owed approximately C$250 million to about 115,000 users with account balances while most of its cryptocurrency reserves could not be located or accessed.

The figures came from materials supporting an application for protection under Canada’s Companies’ Creditors Arrangement Act. They were company estimates rather than audited findings: approximately C$70 million in fiat obligations and C$180 million in cryptocurrency obligations. On February 2, the court had not granted creditor protection, verified the balances or determined whether the missing assets existed in the quantities recorded on Quadriga’s internal platform.

That distinction was critical. Customers could see balances inside their exchange accounts, but those entries did not independently establish that Quadriga controlled corresponding coins or cash.

Control concentrated in one person

Jennifer Robertson, the widow of Quadriga founder Gerald Cotten, stated in an affidavit sworn on January 30 that Cotten had been the companies’ sole officer and director. Cotten had died in India on December 9, 2018, according to the filing.

Robertson said the laptop from which Cotten conducted company business was encrypted and that she did not know its password or recovery key. Searches had not located written credentials, while a consultant retained to examine Cotten’s devices had achieved only limited recovery by the time of the application.

The affidavit described most cryptocurrency as having been kept in offline “cold wallets.” That was Quadriga’s contemporaneous account, not a verified blockchain conclusion. The filing did not provide the public with a complete, independently reconciled list of controlled wallet addresses, private keys and customer liabilities.

Quadriga’s directors had suspended platform operations on January 26. The exchange announced on January 31 that it intended to seek creditor protection, explaining that efforts to locate and secure significant reserves had not succeeded. The February 2 reporting supplied the scale and operational details behind that announcement.

An institutional failure, not a protocol failure

Nothing disclosed on February 2 indicated that Bitcoin, Ether or another underlying blockchain had failed. The immediate problem concerned a centralized custodian: customers had transferred control of assets to an intermediary whose internal records, access procedures and management continuity could not then be independently tested.

Cold storage can reduce exposure to online theft, but it does not solve governance. If access depends on one person, the same arrangement that blocks attackers can also block customers, employees and an insolvency monitor. An exchange must additionally reconcile customer claims against assets, segregate property where required, maintain recoverable credentials and establish controls for the death or incapacity of key personnel.

The filing also showed why Quadriga’s displayed balances could not be treated as on-chain proof of reserves. Trading between customers occurred within the platform’s private ledger. Public blockchains could record deposits and withdrawals, but they could not by themselves identify every wallet controlled by Quadriga or confirm that aggregate customer balances were fully backed.

What remained unresolved

As of February 2, the court had not ruled on the application, and no court-appointed monitor had tested Quadriga’s account. It remained uncertain how much cryptocurrency could be recovered, whether additional wallets or exchange accounts existed, and how the estimated obligations had been valued. Claims that the entire C$180 million cryptocurrency balance was permanently lost went beyond the evidence available on that date.

Later context

On February 5, 2019, the Nova Scotia Supreme Court granted the companies creditor protection and appointed Ernst & Young as monitor. A later Ontario Securities Commission staff review concluded in 2020 that most client losses resulted from Cotten’s fraudulent conduct rather than inaccessible cold wallets. That later finding clarifies the historical record but was not knowable on February 2 and does not change the narrower event-day conclusion: Quadriga had disclosed a major custody and control crisis without evidence sufficient to reconcile its customer liabilities to recoverable assets.