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2026 Proof of Custody. Published by Onramp Bitcoin. Editorial Independence.PrivacyTermsproofofcustody.io
The timeline
ExchangeNovember 2022The Great Unwind

FTX

Customer assets were commingled with an affiliated trading firm. The exchange had been audited, and the audits did not test segregation or liabilities under stress.

By Steve L, Editorial Lead·Reviewed by Proof of Custody Editorial
Published Aug 3, 2026
Reported loss
~$8B customer shortfall

The estate later disclosed the exchange held a small fraction of the bitcoin customers believed it held.

What it should change

An audit is not a custody control. Segregation and legal title determine what a customer actually owns when the entity fails.

Which setups this class of failure could reach

These are the custody configurations structurally exposed to this kind of event. It describes the failure class, not any individual holder.

Bitcoin left on an exchangeBitcoin lent or earning yield

Whether your own arrangement sits in one of those groups is the question our Custody Independence Standard is designed to answer, and the four questions in Is your custody setup actually safe? walk through it.

Sources

Chapter 11 filings, CFTC complaint

Figures are as reported by the named sources. Proof of Custody has not independently reproduced the underlying analysis.

← Earlier
Voyager Digital
July 2022
Later →
BlockFi
November 2022
How to cite
Proof of Custody, "FTX" incident record, proofofcustody.io/incidents/ftx-2022
Frequently asked questions
What happened to FTX?+

Customer assets were commingled with an affiliated trading firm. The exchange had been audited, and the audits did not test segregation or liabilities under stress. Reported loss: ~$8B customer shortfall.

What should FTX change about how I hold bitcoin?+

An audit is not a custody control. Segregation and legal title determine what a customer actually owns when the entity fails.

Which custody setups were exposed to the FTX failure?+

This class of failure could reach: bitcoin left on an exchange; bitcoin lent or earning yield. It describes the failure class rather than any individual holder.

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