BlackRock Close to Filing for Bitcoin ETF Application By Matt Brienen Published: 2023-06-15T14:31:59+00:00 BlackRock, the world's biggest asset manager, is close to filing an application for a Bitcoin ETF (exchange traded fund), according to a person familiar with the matter. BlackRock will be using Coinbase (COIN) Custody for the ETF and the crypto exchange’s spot market data for pricing, the person said. Coinbase declined to comment. BlackRock began working with Coinbase to make crypto directly available to institutional investors midway through last year.