OKX Lets Institutions Use BlackRock’s BUIDL as Trading Collateral

OKX has begun allowing eligible institutional and VIP clients to use BlackRock’s tokenized money market fund, BUIDL, as collateral for margin and derivatives trading. The arrangement places the assets in regulated off-exchange custody with Standard Chartered, creating a yield-bearing collateral corridor for institutional crypto traders.
BlackRock integrates Chronicle verification layer into tokenized BUIDL fund

BlackRock has added Chronicle Labs’ Proof of Asset verification layer to its tokenized BUIDL fund, a move that shifts the product from periodic attestations toward continuous, cryptographically verifiable asset reporting. The integration is designed to provide near-real-time visibility into the fund’s underlying holdings and to create a public, tamper-evident audit trail for institutional users.
