Warren Buffett is described by Peter Thiel as a "sociopathic grandfather from Omaha" and bitcoin's "enemy No. 1."

JPMorgan CEO Jamie Dimon and BlackRock CEO Larry Fink were also singled out by Thiel, who had collected hundreds of millions of dollars in bitcoin through his startup firm Entrepreneurs Fund by 2018. Thiel displayed enormous visuals of the two finance executives, as well as their pessimistic statements on bitcoin.

The phrase "gerontocracy" appeared in every image. Thiel said Dimon's opinions are influenced by "the New York City banker bias."

Thiel put up a photo of Buffett with the words "rat poison" written on it, alluding to a period when the Berkshire CEO ridiculed bitcoin with that statement. "I don't own any and I never will," Buffett said in another quotation. Berkshire Hathaway invested $1 billion in Nubank, a successful online bank in Brazil, earlier this year.


Thiel's outburst in Miami is his newest and most public assault on those he believes are impeding bitcoin's rise.

He went on to say that while some investors are comfortable with pushing blockchain, the technology that underpins cryptos, they feel compelled to delegitimize bitcoin and its legality.

A Berkshire Hathaway spokesman did not respond to a request for comment, while a JPMorgan official refused to speak on the record.

Fink posted remarks in his letter to shareholders last month, according to a BlackRock representative. "A worldwide digital payment service, properly built, can enhance the settlement of international transactions while lowering the risk of financial fraud and fraud," he wrote, adding that Russia's annexation of Ukraine could hasten the implementation of electronic tokens.