Former President Donald Trump has raked in $3 million in cryptocurrency fundraising since becoming the first major presidential candidate to accept cryptocurrency donations in May. On Monday, Trump selected the most pro-Bitcoin running mate since the technology’s inception.

Trump, once skeptical of Bitcoin, received $1.8 million of the world’s largest cryptocurrency by the end of June. He also took in $900,000 worth of ether, the coin associated with Ethereum, $300 of Dogecoin, and $100 of Shiba Inu coin, among other coins. The fundraising haul was mostly bolstered by a handful of cryptocurrency power players, according to the Wall Street Journal.