Glauber Contessoto took a big risk on dogecoin, a meme-inspired cryptocurrency that began as a joke, earlier this year.

Between his savings and borrowed funds, Contessoto says that he invested over $250,000 in dogecoin on February 5 when it was priced at about 4.5 cents. About two months later, on April 15, he says he became a dogecoin millionaire on paper.