What blockchains are compatible with OpenSea?

A blockchain is a digitally distributed ledger that records transactions and information across a decentralized network. OpenSea is compatible with the following blockchains: Ethereum, Polygon, Klaytn, Arbitrum, Optimism, Avalanche, Zora Network, Base, Blast, Sei, B3, Berachain, Flow, ApeChain, Soneium, Shape, Unichain, Ronin, and Abstract.

Blockchains are decentralized, trustless, and permissionless. They use different consensus mechanisms to verify each transaction and maintain the chain's integrity. Blockchains can be used for selling, storing, or trading cryptocurrencies or digital items, like NFTs.  

Blockchains are typically known for a specific use case or purpose. Below, we’ve broken down 19 different blockchains compatible with OpenSea and what they're most commonly used for.

Ethereum

Ethereum is a Layer 1 decentralized blockchain, which means it executes and validates transactions on its own blockchain. Since Vitalik Buterin introduced the Ethereum blockchain in 2014, it has grown to become the largest blockchain for NFTs. It is best known for its smart contract functionality, which powers NFTs. Its native cryptocurrency is Ether. 

Polygon

Polygon is an EVM-compatible Ethereum sidechain, a separate and independent blockchain that is linked to a Layer 1 blockchain. In Polygon’s case, its Layer 1 blockchain connection is to Ethereum, which means it benefits from and is compatible with Ethereum. Originally named MATIC, the blockchain changed its name in 2021 but retained MATIC as the name for its native cryptocurrency. While creators use Polygon for NFTs, its other main use cases are for developing decentralized apps (dApps) or as a blockchain for decentralized financial services (or DeFi). 

Klaytn

Klaytn is an L1 blockchain, and its native cryptocurrency is KLAY. The Kakao Corporation’s GroundX introduced Klaytn in South Korea in 2019 and made it internationally available in 2021. With a focus on gaming, metaverse, and the creator economy, the blockchain is known for its high throughput and fast finality (a theoretical speed of 4,000 transactions per second and a 1-second block finality). 

Arbitrum

Off-chain Labs created Arbitrum as an open-source Layer 2 blockchain that uses Ethereum as its base chain for security. It uses an optimistic rollup architecture to process transactions, which means it can bundle multiple transactions into a single batch and process them off-chain. Arbitrum is known for lower gas fees (costs associated with blockchain transactions) and speedier transactions, which can benefit those who use the blockchain to mint NFTs. Arbitrum’s cryptocurrency is ARB. 

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Optimism

Optimism is an EVM-compatible, L2 blockchain, and similar to Arbitrum, it uses optimistic rollup to process blockchain transactions. The Optimism Foundation runs Optimism, and the blockchain breaks into a two-tier governance structure, which includes the Token House and the Citizens’ House. OP is Optimism’s token, but you do not need it to use Optimism since it is used as a governance tool instead. The blockchain is a favorite for dApps and smart contracts. 

Avalanche

Avalanche is an EVM-compatible, open-source L1 blockchain. Its native token is AVAX. Unlike other blockchains, Avalanche does not use the most common consensus mechanisms; instead, it uses its own Avalanche Consensus Protocol to verify transactions. The blockchain is known for its smart contract functionality and is commonly used for dApps, NFTs, and DeFis.    

The Zora Network

The Zora Network is one of two of the newer blockchains that launched in 2023 (Base is the other and explained more below!). The blockchain is compatible with OpenSea as of July 2023. The L2 blockchain is secured by Ethereum and powered by the OP Stack (software that is primarily used to power L2 blockchains). The blockchain is NFT-focused and prides itself on putting creators first.

Base

Coinbase built Base in 2023. The blockchain is an Ethereum-based L2 blockchain that is focused on onboarding developers and users who create dApps, DeFi, NFTs, and more. Unlike other blockchains, Base does not have a token.

Blast 

Blast launched its mainnet in early 2024. It is an Ethereum Layer 2 (L2)  network.

Sei

Sei is an open-source L1 blockchain that uses a proof-of-stake consensus system and other innovations to optimize for speed, security, and scalability. SEI is the chain’s native token, and can be used to buy Sei NFTs using OpenSea. You can buy SEI from a supported cryptocurrency exchange.

B3

B3 is a layer 3 (L3) gaming-focused blockchain built on Base. B3 is designed for quick and cost-efficient transactions, while utilizing Base's security and user-friendly features. It uses Base ETH bridged to B3 for transactions.

Berachain

Berachain is an EVM-Identical Layer 1 blockchain, which means that whenever EVM is upgraded, Berachain is compatible with the latest version, too. It uses a novel Proof-of-Liquidity (PoL) system.

$BERA is Berachain’s native gas and staking token. EVM-compatible wallets, such as  MetaMask, are compatible with Berachain.

Flow

Flow is a decentralized EVM-equivalent L1 blockchain. Flow is compatible with EVM-compatible wallets like MetaMask, and relies on a script in Cadence, its native smart contract language, to integrate unique Flow features with EVM.

Its EVM blockchain explorer is Flowscan, and its native token, FLOW, is available on many cryptocurrency exchanges. It also has its own native wallet.

ApeChain

ApeChain is an Arbitrum Orbit chain, leveraging Arbitrum’s security and infrastructure while operating as a distinct chain. ApeChain powers an entire ecosystem, and its native token, $APE, is used for gas fees.  

Its blockchain explorer is Apescan. ApeChain is compatible with many web3 wallets like MetaMask.

Soneium

Soneium is a creator-focused Ethereum Layer 2 blockchain. It aims to foster a collaborative, creative ecosystem connecting web3 and web2 internet services.

Its primary blockchain explorer is powered by Blockscout, and it uses ETH for gas. Soneium can be added as a network to any EVM-compatible wallet, like MetaMask.

Shape

Shape is a creator-focused EVM-equivalent blockchain. Shape creators receive back a portion of the gas spent by users using a concept called “gasback.”

The Shape network is compatible with EVM wallets, and uses ETH bridged to Shape.

Unichain

Provided by Uniswap Labs, Unichain is a decentralized L2 chain with extremely quick transaction speeds, low transaction costs, and supports cross-chain liquidity.

Unichain can be added to an existing Ethereum wallet.

Ronin

Ronin is a EVM blockchain designed for gaming applications, enabling in-game transactions that are fast and incur minimal fees. It operates with a delegated proof-of-stake system (DPoS) to increase its decentralization.

Its native token, $RON, is used for transaction fees. To use the Ronin blockchain, you can use Ronin wallet or an EVM wallet like MetaMask.

Abstract

Abstract is an EVM-compatible L2 (layer two) blockchain built using ZKSync technology. It’s designed for consumers, with quick transaction speeds, scalability, and low fees. Users can connect to Abstract using EVM-compatible wallets like MetaMask. Its blockchain explorer is https://abscan.org/, and it uses ETH for gas.