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What is Sei?

Sei (SEI) is a Layer 1 blockchain purpose-built for trading, exchange infrastructure, and high-performance decentralized finance. The project was co-founded in 2022 by Jeffrey Feng, a former Robinhood and Coatue investor, and Jayendra Jog, a former Robotic Software engineer at Robinhood. Sei Labs, the core development team, raised an initial $5 million seed round led by Multicoin Capital in August 2022, followed by a $30 million raise in April 2023 at a reported $800 million valuation, backed by Jump Crypto, Distributed Global, Asymmetric, Flow Traders, Hudson River Trading, GSR, and Bixin Ventures.

The mainnet launched on August 15, 2023, alongside a large community airdrop and a Binance Launchpool distribution that introduced SEI to millions of retail users on day one. The original chain was built with the Cosmos SDK and used a Tendermint-based consensus called Twin-Turbo, which combined optimistic block processing with intelligent transaction propagation to achieve roughly 400-millisecond block times and near-instant finality — metrics that placed it among the fastest production L1s at launch.

The pivotal milestone for the ecosystem was Sei V2, which went live on mainnet in 2024 and introduced what the team describes as the first fully backwards-compatible parallelized EVM. Developers can deploy standard Solidity contracts using Hardhat, Foundry, or MetaMask while benefiting from optimistic parallel execution, SeiDB storage optimizations, and interoperability with existing CosmWasm contracts. This dual-VM design was intended to attract Ethereum developers without sacrificing the Cosmos-native liquidity and tooling already present on the chain.

The Sei ecosystem today spans perpetual DEXs, spot exchanges, lending protocols, NFT marketplaces, and liquid staking providers. Notable projects include Astroport, Jellyverse, Yaka Finance, Silo Stake, and Dragonswap, alongside Pyth Network oracle integration for low-latency price feeds. Sei has also partnered with Circle to bring native USDC to the chain, and with Wormhole and Axelar for cross-chain bridging. In 2024 the Sei Foundation announced a $50 million ecosystem fund in partnership with Foresight Ventures and others to accelerate developer adoption.

The project has not been without controversy. Airdrop recipients criticized the initial distribution methodology and sybil filtering, and some early community members disputed unlock timing for team and investor allocations. Critics have also questioned whether order-matching primitives at the chain level remain relevant now that most DeFi liquidity has migrated to AMM models, though the V2 EVM pivot has largely addressed those concerns by broadening the chain's use cases beyond pure orderbook trading.

As of 2024–2025, Sei ranks among the top Layer 1 networks by active addresses and has secured listings on virtually every major centralized exchange, including Binance, Kraken and Bybit. SEI itself functions as the gas token, staking asset, governance vote, and native collateral for protocols building on top of the network.

Key Features of Sei

• Parallelized EVM Execution: Sei V2 processes independent EVM transactions simultaneously rather than one at a time, using optimistic concurrency control to detect and resolve state conflicts. This lets standard Solidity dApps achieve throughput that is impossible on sequential EVM chains like Ethereum mainnet or most L2 rollups.
• Twin-Turbo Consensus: Sei combines intelligent block propagation with optimistic block processing to reach roughly 400ms block times and single-slot finality. Validators begin processing blocks before full propagation completes, cutting latency dramatically compared to vanilla Tendermint.
• Dual-VM Architecture: The chain natively supports both EVM contracts and CosmWasm contracts within the same execution environment, with full interoperability between them. Developers can choose Solidity or Rust without fragmenting liquidity across separate chains.
• Frequent Batch Auctions: Sei's matching layer can group transactions into short batch windows and clear them at a single price, neutralizing the ordering advantages that fuel MEV and sandwich attacks. This protects retail traders and makes the chain attractive for serious market makers.
• SeiDB Storage Layer: SeiDB is a custom-built storage engine that separates state commitment from state storage, slashing disk usage and node sync times. This keeps hardware requirements reasonable for validators even as transaction volume scales up significantly.
• IBC and Cross-Chain Connectivity: As a Cosmos SDK chain, Sei connects to dozens of other networks via IBC for trust-minimized asset transfers. Bridges with Wormhole and Axelar extend that reach to Ethereum, Solana, and other non-Cosmos ecosystems, plus native USDC from Circle.

Sei Use Cases

• Perpetual Futures Trading: Sub-second finality and frequent batch auctions make Sei well suited for on-chain perpetual exchanges that need responsive liquidations and tight spreads. Protocols like Jellyverse run leveraged derivatives markets that feel closer to centralized exchange UX than typical DeFi.
• High-Frequency DEX Liquidity: Market makers can update quotes multiple times per block without paying prohibitive gas, thanks to 400ms block times and parallel execution. Spot DEXs like Dragonswap and Yaka Finance leverage this to offer CEX-competitive pricing on-chain.
• Staking and Network Security: SEI holders can delegate tokens to validators to earn roughly 5–6% APY while helping secure the chain. Liquid staking providers such as Silo issue receipt tokens that remain usable across DeFi, so capital is not idle during the 21-day unbonding period.
• NFT Marketplaces: Low fees and fast confirmations make Sei practical for NFT drops, gaming assets, and secondary trading where gas-heavy chains frustrate users. Marketplaces on Sei have hosted collections tied to gaming launches and ecosystem projects.
• Real-World Asset Tokenization: The combination of EVM compatibility, native USDC, and institutional-grade oracle feeds from Pyth positions Sei as a venue for tokenized treasuries, credit products, and other RWAs. Settlement speed is competitive with traditional financial rails.
• Cross-Chain Arbitrage: IBC, Wormhole, and Axelar connectivity let traders move assets between Sei and major ecosystems within minutes. Arbitrageurs use Sei as a low-latency execution venue while sourcing liquidity from Ethereum, Solana, and Cosmos counterparts.

Sei Tokenomics

Total Supply

SEI has a fixed maximum total supply of 10,000,000,000 tokens. No additional SEI can be minted beyond this cap, though issuance from staking rewards continues within existing allocations.

Circulating

Circulating supply at launch in August 2023 was approximately 1.8 billion SEI, with the remainder unlocking over several years according to the vesting schedule.

Utility

SEI is used to pay transaction fees, stake with validators for network security and rewards, vote on on-chain governance proposals, and serve as native collateral within many DeFi protocols built on the chain. It is also the gas token for both EVM and CosmWasm transactions.

Emission

Distribution is split as 48% ecosystem and community programs, 20% foundation reserves, 20% team and advisors with multi-year vesting cliffs, and 12% private investors subject to lockups. Staking rewards currently yield roughly 5–6% APY and are paid from existing allocations rather than new issuance beyond the 10 billion cap.

Sei Historical Price Performance

SEI launched in August 2023 and initially traded down to $0.095 in October. The parallelized EVM narrative and DeFi trading infrastructure thesis drove a rally to its all-time high in March 2024. Sei V2's launch brought EVM compatibility, expanding the potential developer and user base significantly.

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