Twitter co-founder and CEO Jack Dorsey now plans to convert the proceeds from the NFT auction of his first tweet to bitcoin and donate them to charity. The highest bid for the tweet is currently $2.5 million.

The auction will end on March 21st, and he plans to donate the bitcoin to Give Directly, a nonprofit that lets donors send money directly to people living in poverty. He’ll be giving the bitcoin to Give Directly’s Africa Response fund for COVID-19 relief.

Dorsey put up his famous first tweet as an NFT (which stands for “non-fungible token”) on Friday evening, and bids quickly poured in, even though Dorsey hadn’t announced when the auction would end or that proceeds would be going to charity. The current highest bid was made Saturday evening.

The winner will get a “digital certificate of the tweet,” according to an FAQ on NFT auction site Valuables, where Dorsey’s tweet is for sale. However, the tweet will remain viewable on the internet for free, assuming that Twitter or Dorsey himself won’t remove it.