OKX has published its 47th monthly proof-of-reserves report, disclosing $27.4 billion in primary assets backing customer funds. The September 2026 report lists 139,865 BTC in customer account assets and 153,151 BTC in OKX wallet assets.

Bitcoin Reserves Exceed Customer Balances

The exchange reports a Bitcoin reserve ratio of 109%, meaning its disclosed BTC holdings exceed customer account balances. OKX lists 146,359 BTC in exchange-controlled holdings, along with an additional 6,792 BTC held through third-party custody.

Reserve coverage above 100% was reported across several other major assets:

• ETH: 101%
• USDT: 105%
• USDC: 100%
• XRP: 108%
• DOGE: 101%
• SOL: 105%
• OKB: 100%

For exchange customers, reserve coverage addresses a core custody question: because crypto platforms hold user funds directly, the ratios offer a check on whether reported holdings are sufficient to cover the balances shown in customer accounts.

According to OKX, its proof-of-reserves system is designed to let users independently verify account inclusion, total balances, and wallet ownership. The full report is available on OKX's official proof-of-reserves page.

Transparency Program Continues

The disclosure forms part of OKX's ongoing monthly proof-of-reserves program, which began in 2022. The exchange uses cryptographic verification methods, including zk-STARK technology — a zero-knowledge proof system that enables users to confirm their accounts are included in reserve attestations without exposing personal data — alongside publicly verifiable wallet information. Spanning 47 editions, the series now offers an extended track record for users to examine rather than a single, one-off disclosure.

The $27.4 billion figure marks an increase from the $22.96 billion in primary assets reported in the previous edition. OKX notes that the reported Bitcoin customer balance remains a separate measure from the overall dollar value of primary assets, since the latter includes multiple cryptocurrencies.

A Snapshot, Not a Guarantee

OKX's latest disclosure provides a point-in-time snapshot of customer liabilities and the corresponding digital-asset holdings for the reporting period. A reserve ratio above 100% indicates that the exchange reports holding more of an asset in reserve than customers hold in their accounts.

Proof-of-reserves reports are snapshots rather than continuous guarantees of an exchange's financial position: the figures reflect a single reporting date and do not capture deposits, withdrawals, or market movements after that point, nor do they substitute for a comprehensive financial audit. Such disclosures became a widespread industry practice following the 2022 collapse of several major crypto platforms, when the handling of customer assets drew heightened public and regulatory scrutiny. Users can examine the reported figures and cryptographic proofs using OKX's published verification tools and wallet information. As the monthly series continues, future editions can be compared against these figures to see how reserve coverage and primary asset totals change over time.