OpenSea

About OpenSea OpenSea is the world's first and largest decentralized NFT and digital asset marketplace, founded in 2017 by Devin Finzer and Alex Atallah, enabling peer-to-peer trading of non-fungible tokens across 19+ blockchains.

The platform's OS2 rebuild, launched in February 2025, introduced a dramatically reduced 0. 5% marketplace fee (down from 2.

5%), zero-fee token swaps, cross-chain purchasing capabilities, and expanded multi-chain support covering Ethereum, Polygon, Solana, and 16 additional networks.

OpenSea supports 600+ digital asset categories including digital art, gaming items, music, sports collectibles, virtual real estate, and domain names, making it the most comprehensive NFT discovery and trading ecosystem available to retail and institutional participants globally.

The platform's Voyages rewards system allows users to earn XP points redeemable toward the forthcoming $SEA token airdrop, adding a DeFi-native incentive layer unique to OpenSea's competitive positioning.

With over 467,000 monthly active users as of May 2025 and a 71.5% share of Ethereum NFT trading volume, OpenSea commands unmatched liquidity depth across the Web3 asset ecosystem, underpinned by non-custodial wallet architecture.

OpenSea's API-first, smart-contract-native infrastructure and operator filter registry offer developers and enterprises verifiable, permissionless access to real-time NFT liquidity and metadata at scale.

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