Investment giant BlackRock (BLK) has committed $17 million to bankrupt bitcoin miner Core Scientific (CORZ), which is part of a new $75 million loan from the miner's secured convertible note holders, according to a U.S. Securities and Exchange Commission filing that was filed on Dec. 29.

BlackRock, which is Core Scientific's largest shareholder according to FactSet data, already held $37.9 million in secured convertible notes as of Dec. 28. The latest $17 million is part of the new $75 million convertibles notes, which is part of its prearranged bankruptcy process, the filing says. In a prearranged bankruptcy, the debtor reaches some sort of agreement with its debtee before officially filling for bankruptcy.