Coinbase Says Over 99% of Customer Assets Are in Offline Storage
Coinbase detailed its custody controls after the Binance breach, saying more than 99% of customer assets remain offline.
Coinbase detailed its custody controls after the Binance breach, saying more than 99% of customer assets remain offline. This is an original TLT brief synthesising 2 outlets (Cointribune, Decrypt), with their figures cross-checked, plus live market data, as of Thu, 05 Nov 2026 20:00:04 UTC.
The disclosure highlights the security mechanism Coinbase is relying on to limit online exposure following a major industry breach. It also puts a dollar figure on the portion Coinbase says remains outside offline storage.
- Coinbridge says over 99% of customer assets are held offline
- Cointribune values the online remainder at $3.8 billion
- Both outlets report the same offline-storage threshold
- Bitcoin fell 5.20% over 24 hours
Cointribune and Decrypt both report Coinbase’s claim that more than 99% of customer assets are held in offline cold storage, making the 99% figure independently corroborated across the two supplied outlets. Cointribune additionally characterizes the portion left online as $3.8 billion, a detail Decrypt does not quantify, while Decrypt identifies split private keys and kill switches as part of Coinbase’s security controls. Cointribune dates the statement to November 4 and describes it as following a $6.34 billion Binance breach, while Decrypt uses a rounded $6.4 billion figure and reports that Coinbase told customers it was unaffected; the outlets do not contradict one another.
Coinbase said on November 4 that more than 99% of customer assets are maintained in offline cold storage, according to Cointribune and Decrypt. The disclosure came days after a large breach at Binance, with Cointribune placing its size at $6.34 billion and Decrypt describing it as $6.4 billion. Decrypt reported that Coinbase told customers it was not affected by the Binance incident. Alongside offline custody, Coinbase detailed split private keys and kill switches as security controls, while Cointribune focused on the scale of the assets Coinbase says remain online. The two outlets agree on the central operational claim and the 99% threshold. They differ in emphasis: Decrypt highlights the safeguards beyond storage and explicitly reports Coinbase’s assurance that it escaped the breach, whereas Cointribune focuses on the residual online holdings and values that portion at $3.8 billion. Their descriptions of the Binance loss reflect rounding rather than a material conflict.
Offsite storage puts the great majority of Coinbase customer assets outside internet-connected systems, but Cointribune’s figure shows that the online remainder is still substantial. Coinbase’s combination of cold storage, divided private keys and kill switches forms the security model presented in the wake of the reported Binance breach.
Live market conditions were broadly negative. The total crypto market capitalization stood at $2.62 trillion, 
Bitcoin was down 5.20% over 24 hours, and the Fear & Greed index registered 50, classified as Neutral. The Coinbase disclosure does not identify movement in a specific coin; its significance instead lies in the reported size of the online asset exposure and the controls Coinbase says it is using to reduce that risk following the breach.
1 key figure independently matched across 2 outlets reporting this story.
TLT extracts the figures each outlet reports and flags the ones that agree. Numbers cited by only one outlet are attributed in the brief, not shown as corroborated.
Coinbase Says Over 99% of Customer Assets Are in Offline Sto — questions & answers
What percentage of Coinbase customer assets is offline?
Coinbridge says more than 99% of customer assets are held in offline cold storage. Cointribune puts the value of the online remainder at $3.8 billion.
Was Coinbase affected by the reported Binance breach?
Decrypt reports that Coinbase told customers it was not affected. Neither supplied outlet reports a Coinbase loss from the incident.
What security controls did Coinbase describe besides cold storage?
Decrypt reports that Coinbase also uses split private keys and kill switches as part of its security controls.
Which outlets reported this story?
This is an original TLT brief that synthesises reporting from Cointribune, Decrypt, with the key figures cross-checked for agreement across them. It is not a copy of any one article — follow the source links above for the original reporting.
Original summary — not financial advice. This is an original TLT brief that summarises a development reported elsewhere and adds live market data for context; it is not the original article and reproduces no part of it. Follow the source link above for full details. Crypto is volatile and high-risk — always do your own research.