The fall of crypto billionaire Sam Bankman-Fried has been painted as a big blow to the Democratic party, whose candidates were major beneficiaries of his largesse. But in a new interview, Bankman-Fried has claimed he gave equally large amounts of money to Republicans.

“I donated to both parties. I donated about the same amount to both parties,” Bankman-Fried told the crypto commentator and citizen journalist Tiffany Fong.

“All my Republican donations were dark,” he said, referring to political donations that are not publicly disclosed. “The reason was not for regulatory reasons, it’s because reporters freak the fuck out if you donate to Republicans. They’re all super liberal, and I didn’t want to have that fight.”

Bankman-Fried’s undisclosed donations were made possible by the supreme court’s 2010 decision in the Citizen’s United case, which allowed donors to give anonymously and has led to more than $1bn being poured into federal elections since 2010.

The revelation comes as a political battle over the collapse of FTX, Bankman-Fried’s crypto exchange, is shaping up in Washington.

Bankman-Fried was the second-largest donor to Democratic politicians in the last election cycle. The Republican senator Ted Cruz has called FTX “a Bernie Madoff style fraud that cost investors BILLIONS”.

“Will Joe Biden and Democrats who cashed Bankman-Fried’s checks give that money to the people SBF screwed?” he wrote on Twitter earlier this month.

On Thursday the Senate will hold the first in what is expected to be a series of hearings into FTX’s collapse, with Republicans keen to hold Democrats responsible for a lack of oversight before its collapse.

Public data shows that some parts of Bankman-Fried’s empire gave equally to both parties. Data from OpenSecrets, a non-profit that tracks data on campaign finance and lobbying, shows FTX US, the company’s US operation, gave equally to both parties.

But Bankman-Fried’s public donations went largely to Democrats. The FTX founder gave more than $990,000 to candidates in the last election cycle, according to OpenSecrets, and another $38.8m to outside groups. Only about $235,000 of his public political giving went toward Republican candidates.

The money helped Bankman-Fried position himself as an influential voice in crypto regulation in Washington. In February he testified before the same Senate agricultural committee that will hold the first hearing into FTX’s collapse this Thursday.

At the February hearing, Bankman-Fried argued for clarity in regulating the crypto market and outlined “FTX’s key principles for ensuring investor protections.” They included:

● Maintaining adequate liquid resources to ensure the platform can return the customer’s assets upon request;

● Ensuring the environment where customer assets are custodied, including digital wallets, are kept secure; and

● Ensuring appropriate bookkeeping or ledgering of assets and disclosures to protect against misuse or misallocation of customer assets.

Bankman-Fried was ousted after the company filed for bankruptcy. The new chief executive, John Ray III, who has overseen some of the biggest bankruptcies ever, including the collapse of the energy giant Enron, said FTX suffered an “unprecedented and complete failure of corporate controls”.

According to FTX’s new management, a “substantial portion” of assets held by FTX may be “missing or stolen” and the company did not even keep accurate records of who worked there.