OKX's 47th proof-of-reserves report shows $27.4 billion in primary assets as user Bitcoin, Ether and USDT balances increased from August. According to the latest report, the exchange listed 139,865 BTC in customer account assets, representing a 4.07% increase from the previous August snapshot of 134,399 BTC. The September report, based on a Sept. 8 snapshot, shows $27.4 billion in primary assets compared to an earlier report covering $35.4 billion in customer-backed assets. The exchange uses zk-STARK proofs and wallet addresses to allow customers to verify reserve inclusion independently. As per the latest report, over 100% reserve ratios are maintained for 22 of the most frequently traded assets, with a 32% year-over-year increase in wallet holdings for BTC, ETH, USDT, and USDC.
Ether user holdings rose 3.49% to 1.786 million ETH between August and September monthly snapshots, increasing from 1,725,703 ETH to 1,785,866 ETH. USDT account assets increased 4.62% to 8.49 billion tokens while reserves covered 105% overall, up from 8.118 billion USDT in August. The exchange classified 146,359 BTC as exchange-held and another 6,792 BTC as held through third-party custody, producing a Bitcoin reserve ratio of 109% compared to 111% in August. Ether maintained a reserve ratio of 101% with 1,716,056 ETH under exchange custody and 79,968 ETH under third-party custody. Other cryptocurrencies showed strong coverage with USDC at 100% and XRP at 108% ratio.
Other cryptocurrencies maintained strong reserve ratios across the latest report. USDC showed 100% coverage with 1.913 billion tokens in account assets versus 1.922 billion in wallet assets, while XRP stood at 108% and DOGE carried 101% ratio. Solana's ratio was 105%, backed by 7.762 million SOL in wallet assets against 7.412 million SOL in account balances. OKB showed 100% coverage after rounding, with 19.75 million tokens in wallet assets compared with 19.72 million in account assets. OKX's reserve reporting covers 22 coins, including Bitcoin, Ether and major stablecoins, with the published figure representing primary assets and not the dollar value of every asset across all OKX business entities.
OKX uses zk-STARK technology to allow users to confirm their balances were included in liability calculations without exposing individual account information. Users can download an inclusion proof from their OKX account and run the exchange's open-source zk-STARK validator to test whether their balance was included and separately verify total-balance and non-negative-balance constraints. For reserve assets, OKX publishes wallet-address files that allow users to check signatures and balances against the blockchain. The September report is listed under ID 502299735 using zk-STARK v2 for both reserve and liability files, with previous downloadable snapshots dated August 11, July 7, June 19, May 7, April 20 and March 3. OKX also provides open-source verification tools on GitHub and downloadable proof files, noting that the report represents a snapshot of balances at publication time and does not reflect changes after the snapshot.
