OpenSea

Devin Finzer and Alex Atallah launched OpenSea in December 2017 to build a decentralized space where digital creators could sell work directly to buyers without intermediaries. While early reports often cited San Francisco as its base, the company has since established a significant operational presence in Miami, positioning itself as a global leader in the onchain economy. The platform facilitates buying, selling, minting, and discovery of NFTs across multiple blockchains including Ethereum, Polygon, Solana, and others.

The marketplace generates revenue primarily through a 2.5% transaction fee on sales, though it offers gas-free transactions on the Polygon network to reduce costs for users. Its product suite allows people to purchase items at fixed prices or participate in auctions for digital art, music, gaming assets, domain names, and collectibles. During peak market cycles, the company historically held over 90% of the total NFT trading volume.

Recent developments highlight a pivot toward derivatives and new asset types. In June 2026, OpenSea teased the launch of perpetual contract trading powered by Hyperliquid, aiming to expand beyond simple NFT swaps into more complex DeFi products. The brand also explores new categories with partnerships like Panini America launching a blockchain bridge for physical trading cards in mid-2026. [edit]