Beyond asset growth, Armstrong has also called for a radical shift in Coinbase's token listing process. In a Jan. 24 post, he noted the challenges posed by the explosion of new cryptocurrencies.

JPMorgan and Bank of America expect to be providing even basic services to crypto clients such as holding digital assets in custody, even buying bitcoin exchange-traded funds at their branches.

The MetaMask creator survived by having redundant backup accounts, said Lubin, who was also personally targeted.

The industry's U.S. banking crisis may be retreating as a second congressional committee sheds light on how crypto businesses have been treated by regulators.