Material Agreement Form 8 K

Item 1.01 Entry into a Material Definitive Agreement.

On September 16, 2024, BlackRock Fund Advisors, as administrative trustee of iShares Bitcoin Trust ETF (the "Trust"), and Coinbase Inc., on behalf of itself and as agent for Coinbase Credit, Inc. and Coinbase Custody Trust Company, LLC, entered into the Amendment (the "Amendment") to the Third Amended and Restated Coinbase Prime Broker Agreement (the "Prime Execution Agent Agreement") to reflect certain operational updates to the Prime Execution Agent Agreement, including most significantly to (a) impose a shorter withdrawal processing time on Coinbase Custody Trust Company, LLC for withdrawals from the Vault Balance (as defined in the Prime Execution Agent Agreement) to a public blockchain address while Trade Credits (as defined in the Prime Execution Agent Agreement) remain unpaid and (b) specify that, while Trade Credits remain unpaid, the Trust may withdraw bitcoin from either the Vault Balance (as defined in the Prime Execution Agent Agreement) or the Trading Balance to public blockchain addresses provided that an amount equivalent to the unpaid Trade Credit is kept in the aggregate of the Trading Balance and the Vault Balance following such withdrawal.

The foregoing description of the Amendment does not purport to be complete and is qualified in its entirety by reference to the full text of the Amendment, which has been filed with this Current Report on Form 8-K as Exhibit 10.1.