Flori Marquez co-founded BlockFi. Image: BlockFi In brief Forbes published the 2021 version of its 30 Under 30 list today. The annual list celebrates young entrepreneurs. This year, 10 recipients come from the world of blockchain and crypto. Today, published its 30 Under 30 list for 2021, its annual curation of America’s most successful entrepreneurs and hustlers born after 1990.