Alex Atallah Alex is the co-founder and CTO of OpenSea, the first and largest marketplace for non-fungible tokens (NFTs). OpenSea graduated from the YCombinator W18 batch, raised a seed round from Founders Fund, Blockchain Capital, Coinbase, 1confirmation and others, and now powers the marketplaces or sites for over 200 games and services. Also Alex is Developer at Wificoin.