OpenSea Wallet

OpenSea (opensea.io) is the largest and longest-running NFT marketplace in crypto, founded December 2017 by Devin Finzer and Alex Atallah. OpenSea is the OG NFT marketplace: it pioneered the general-purpose NFT marketplace model and has consistently been one of the largest NFT trading venues by volume for most of the NFT era. As of July 2026 OpenSea is in OpenSea 2.0 - a ground-up rewrite of the marketplace infrastructure (relaunched late 2024-early 2025) that brought improved cross-chain support and a rebuilt frontend. OpenSea's homepage surfaces top trending tokens, featured collections, an extensive discover experience, and a "Trending Tokens" feed that now mixes NFTs with semi-fungible token + memecoin trading.

OpenSea historically supported Ethereum and Polygon, then expanded to Klaytn, then to Solana, and most aggressively in OpenSea 2.0 has expanded to Base, Arbitrum, HyperEVM, Robinhood Chain, Espresso, and blast. Featured collections on OpenSea as of July 2026 include Azuki ($1,738.44 floor, $1.9B all-time volume), Good Vibes Club ($668.04 floor, $36.8M volume), StonkBrokers ($6,973.40 floor, $1.6M volume), Hypurr ($10.2K floor, $268.6M volume on HyperEVM), Playable Character ($9.51 floor, $24.3K volume), Compas ($17.86 floor, +106.3% week), GOD PULL ($32.13 floor), Non Playable Character ($45.19 floor), and the ENTROPY by mendezmendez open-edition mint at $79.37.

What is the OpenSea Wallet? In May 2023, OpenSea launched a self-custodial OpenSea Wallet browser extension and mobile in-app wallet that allowed users to trade on OpenSea without needing a separate wallet installed. In September 2024, OpenSea deprecated the standalone OpenSea Wallet extension and fused the wallet functionality back into the OpenSea marketplace itself - the marketplace now supports embedded signing via partner wallet providers and a "no-installed-wallet-needed" trade flow on mobile. For users browsing the wallets directory, "OpenSea Wallet" effectively means the wallet architecture inside opensea.io that enables users to trade NFTs directly without installing MetaMask / Phantom / Magic Eden Wallet first. OpenSea the marketplace is fully non-custodial - OpenSea never holds user NFTs or user tokens - and the embedded wallet functionality similarly uses self-custodial key storage via a third-party wallet integration provider.

Cross-chain NFT marketplace

OpenSea supports multiple blockchains as of July 2026 - Ethereum, Polygon, Base, Arbitrum, Solana, HyperEVM (HyperLiquid's EVM), Robinhood chain (the Robinhood-launched L2), Espresso, Blast, with new chains being added on a regular cadence. The marketplace aggregates listings on each chain and shows them in a unified discovery feed (or chain-filtered). For EVM chains, the marketplace uses OpenSea's Seaport protocol - a fully open-source, gas-optimized NFT trade protocol that handles fixed-price sales, English auctions, descending-price Dutch auctions, bundle sales, and trait-based criteria offers.

Featured collections and Trending Tokens

OpenSea's homepage now blends NFT collection discovery with broader crypto token discovery. The "Featured Collections" section highlights the week's curated top collections (StonkBrokers at $6,973.40 floor, Azuki at $1,738.44 floor, Good Vibes Club at $668.04 floor, Hypurr at $10.2K floor, Playable Character at $9.51 floor, Compas at $17.86 floor +106.3% week, GOD PULL at $32.13 floor, Non Playable Character at $45.19 floor, ENTROPY open-edition mint at $79.37, r3ordr, and more). The parallel "Trending Tokens" section has shifted into meme + pump-token feeds - top movers shown include Moon Doge Coin ($18.2M market cap, +5,294%), Void Cat (+421%), AS Token ($176.4M on Polygon), frong (+38K% on Robinhood chain), The Black Bull ($183.4M on Solana), SOLANA NUT (+8,499%), Moonbirds, I LIKE TURTLES (+3,486%), Espresso ($251.7M on Arbitrum), BOOK OF MEME ($39.9M on Solana). This broadens OpenSea's surface beyond pure NFTs into general crypto token discovery.

Categories: All / Gaming / Art / PFPs / Physical

OpenSea has structured category navigation for browsing: All (default), Gaming, Art, PFPs (profile-picture NFTs), and the newest category Physical - collectibles that pair on-chain NFT ownership with real-world physical items (a brand new section as of July 2026). This is the most active product surface for browsing curated content. The discover experience is split by category and chain.

Seaport protocol - OpenSea's open-source NFT trade infrastructure

OpenSea's Seaport protocol is fully open-source on GitHub (github.com/ProjectOpenSea/seaport) - it is the marketplace orderbook protocol that handles all matching and execution on EVM chains. Seaport supports complex orders: bundles (multiple NFTs in one trade), criteria-based offers (offer on any NFT matching a trait criteria), ascending-price English auctions, descending-price Dutch auctions, and conditional orders. Seaport is more flexible than legacy NFT trade protocols like Wyvern (which OpenSea previously used and which most NFT marketplaces still use). Seaport has been adopted by multiple independent NFT marketplaces as the underlying infrastructure.

OpenSea Wallet (embedded)

OpenSea 2.0's wallet UX lets users trade NFTs without installing MetaMask / Phantom / Rainbow as separate extensions. The embedded wallet integration partners a self-custodial key storage (the user's seed phrase is still stored locally and never sent to OpenSea's servers) with the OpenSea marketplace UX, so a brand-new user can create a wallet, fund it (via a Coinbase / MoonPay / Stripe on-ramp), and buy an NFT entirely inside opensea.io without leaving the marketplace. This is a meaningful accessibility improvement for non-crypto-native users joining through OpenSea.

Drops - NFT minting

OpenSea operates the Drops product for creators to drop new NFT collections directly through OpenSea. The Drops platform supports scheduled drops, allowlists (per-public allowlist access controls), allowlisted mints, public mints with tiered timing, and emerging mints standards (ERC-721 and ERC-1155 on EVM chains, Metaplex on Solana). Featured Drop: ENTROPY by mendezmendez - an open-edition mint at $79.37 (mint ongoing, 838 minted already).

Non-custodial marketplace - OpenSea never holds user NFTs or tokens

OpenSea is a non-custodial marketplace - at no point during the trade flow does OpenSea hold the user's NFTs or the user's tokens. The marketplace orderbook (Seaport protocol on EVM, Metaplex + custom orderbook on Solana) generates unsigned transactions that the user signs in their own self-custodial wallet (MetaMask, Phantom, Rainbow, Coinbase Wallet, Trust Wallet, etc.). OpenSea the company does not have the technical ability to move user NFTs or user tokens - all actions require the user's wallet signature.

OpenSea embedded wallet (formerly standalone OpenSea Wallet)

OpenSea Wallet - originally launched as a standalone browser extension in May 2023 - was deprecated in late 2024 as OpenSea rebuilt the marketplace on the OpenSea 2.0 stack. The functionality was fused into the marketplace itself via an embedded wallet integration: users can create a self-custodial wallet inside the marketplace without installing a separate extension. The user's seed phrase is generated locally in the browser, encrypted with a user password, and stored in browser secure storage - OpenSea never holds the seed phrase or can access the wallet, but the user can trade immediately without leaving opensea.io.

Seaport protocol - open-source and externally audited

OpenSea's Seaport protocol is fully open-source on GitHub (github.com/ProjectOpenSea/seaport). The protocol has been audited by Trail of Bits and other independent security firms. The audit reports are public on OpenSea's security page. Because Seaport is open-source and adopted by multiple competing NFT marketplaces, the underlying trade protocol has had more independent security review than any closed-source NFT marketplace orderbook.

Treat smart-contract authorization responsibilities

All NFT marketplaces involve smart-contract authorization - when listing an NFT for sale, the user signs a token-approval transaction granting the marketplace orderbook permission to transfer that NFT on execution. OpenSea uses item-level, revocable approvals (rather than unlimited blanket approvals) on Seaport - users can revoke all pending approvals through OpenSea's account settings. Always verify the specific NFT being authorized before signing in any marketplace, and never sign transactions you don't understand.

Phishing risk

OpenSea is a high-priority phishing target for scammers. Common attack patterns include fake opensea.io clones (e.g., opensea.pro, opensea-marketplace.io - always check that the URL starts with https://opensea.io/), fake Discord bots sending "your NFT has been listed - please verify" DMs containing drainer-transaction links, and fake DApp-clone links that prompt a wallet to sign a malicious setApprovalForAll transaction that grants control of all of the user's NFTs in a collection to the attacker. OpenSea's security team actively monitors and reports fake sites, but users must always verify URLs and never sign unfamiliar transactions.

Marketplace fee - 0.5% (Sep 2024 OpenSea 2.0 update)

OpenSea in late 2024 announced a tiered fee structure: 0.5% marketplace fee on takes (purchases), marking a significant reduction from the previous 2.5% that OpenSea charged in the 1.0 era. This fee puts OpenSea competitive with Blur (which charged 0.5% on takes only during its launch phase) and above x2y2 (variable). The 0.5% is charged to the buyer of an NFT (the taker); the seller of the NFT pays 0% marketplace fee in the OpenSea 2.0 fee structure.

Creator royalties

OpenSea enforces creator royalties on EVM chains using the Operator Filter Registry - an on-chain registry that filters out marketplaces that don't respect creator-set royalty percentages. Royalty percentages vary by collection: typically 5-10% set by the creator at mint time. OpenSea honors the creator-specified royalty rate on enforced-royalty collections and shows optional-royalty payment UI on collections that have opted out of registry enforcement. On Solana, OpenSea honors creator royalties set via Metaplex standards.

Network gas (paid to chain, not OpenSea)

Each buy / list / offer transaction is an on-chain blockchain transaction. Ethereum L1: ~$5-30 depending on congestion for typical NFT trade gas. Polygon: sub-cent. Base: sub-cent. Arbitrum: sub-cent. Solana: sub-cent. HyperEVM: low cents. Robinhood chain: low cents. Espresso: low cents. Blast: sub-cent. OpenSea does not charge gas on behalf of users - the user's wallet covers the gas fee shown in the wallet's confirmation dialog.

Embedded wallet on-ramp fees

OpenSea's embedded wallet (OpenSea Wallet) integrates with on-ramp providers (Coinbase Pay, MoonPay, Stripe Crypto Onramp) for users to fund the wallet using a credit card / debit card / Apple Pay. The card-processing fee is set by the on-ramp provider (typically 4-5% + a flat fee depending on the provider), not OpenSea. OpenSea takes a small referral fee from the on-ramp partner, but the user's total cost is dominated by the card-processor fee.

OpenSea Drops mint fees

NFT mints through OpenSea Drops have the standard network gas fee + the creator's mint price (creator-decided). OpenSea takes 0% marketplace fee on primary mints through Drops - the creator keeps the entire mint proceeds minus network gas. The 0.5% marketplace fee applies only when the minted NFT enters the secondary market.

OpenSea as of July 2026 supports nine blockchain networks for NFT trading:

• Ethereum mainnet (L1) - the original OpenSea chain, all legacy collections (Azuki, Good Vibes Club, etc.)
• Polygon - Polygon PoS chain NFTs (gaming, social)
• Base - Coinbase's L2 chain, growing fast (newest collection migrations)
• Arbitrum - leading Ethereum L2 (Espresso featured collection runs here)
• Solana - Native Solana NFTs via Magic Eden-style Solana orderbook integration (Moon Doge Coin, The Black Bull, SOLANA NUT, Moonbirds, BOOK OF MEME trending)
• HyperEVM - HyperLiquid's EVM-compatible chain (Hypurr collection with $10.2K floor and $268.6M total volume)
• Robinhood chain - Robinhood's recently-launched L2 chain (frong +38K%, What If +83.8%)
• Espresso - Espresso's L2 chain network (Espresso token at $251.7M market cap)
• Blast - native yield L2 (limited collections)

OpenSea does not currently support NFT trading on Optimism, zkSync Era, Linea, Scroll, Mode, Mantle, Manta Pacific, Cronos, Celo, Avalanche, or Fantom as of July 2026. For those EVM chains, users need a competitor marketplace (e.g. Zora for Base and Optimism, Blur for Ethereum L1 only).