OKX Integrates BlackRock BUIDL as Collateral

OKX, the global cryptocurrency exchange, has integrated BlackRock's BUIDL tokenized U.S. Treasury fund into its institutional collateral framework through a partnership with Standard Chartered, enabling eligible institutional and VIP clients to use the asset for margin trading.

The service, now live via OKX Middle East, allows clients to post BUIDL as collateral while maintaining trading activity on the platform. Institutions have two options: hold BUIDL off-exchange in custody with Standard Chartered, a globally systemically important bank, or deposit it directly on OKX. In the off-exchange model, client assets remain segregated from OKX's balance sheet, with the exchange handling real-time margin monitoring and liquidation through its risk systems. BUIDL functions as fungible with USD, USDC, and other dollar-pegged stablecoins, permitting idle Treasury positions to support active trades. Clients retain ownership and the fund's on-chain yield distributions.

The arrangement builds on OKX's existing collateral mirroring program with Standard Chartered and represents the first use of a GSIB-backed off-exchange tokenized collateral structure in crypto trading infrastructure. Rifad...