Chainlink Data Streams Go Live on Sei With Real Time Coverage for 300 Assets

The Sei Network has integrated Chainlink Data Streams as its preferred oracle solution, making real-time, low-latency financial data available to developers and users. With this rollout, applications on Sei can now access high-frequency market data for more than 300 assets, including equities, exchange-traded funds (ETFs), and macroeconomic indicators such as U.S. Gross Domestic Product (GDP) and the PCE Price Index.

This makes Sei the latest blockchain ecosystem to adopt Chainlink’s oracle infrastructure, enabling it to support advanced decentralized finance (DeFi), trading, and real-world asset (RWA) applications.

What the Integration Means

Chainlink Data Streams provide sub-second data delivery and liquidity-weighted pricing feeds through a decentralized network. These features are essential for applications such as derivatives, automated trading, and lending, where precision and timing are critical.

For Sei, a high-performance layer-1 blockchain with sub-second finality and EVM compatibility, the integration enables institutional-grade products to be deployed on its network without sacrificing transparency or decentralization.

Key advantages include:

• Sub-second price latency: Ensures minimal delay between market movement and onchain reporting.
• Liquidity-weighted bid-ask spreads: Provides more accurate pricing data by factoring in market depth.
• Macroeconomic data feeds: Includes U.S. government-released data like GDP and purchasing indexes.

Chainlink has already enabled more than $25 trillion in onchain transaction volume.

"With Data Streams available on Sei, developers gain a robust foundation for building innovative onchain products, accelerating adoption and ecosystem growth,” said Thodoris Karakostas, Director of Blockchain & Product Partnerships at Chainlink Labs.

The Role of the 300+ Assets

The expansion to cover more than 300 data feeds means developers can access a broad range of real-time information, far beyond just cryptocurrency prices. These include:

• Equities: Stock-level price data with liquidity adjustments.
• ETFs: Including sector and index-tracking funds.
• Macroeconomic metrics: Real GDP, PCE Price Index, and consumer purchasing trends.

For DeFi protocols, this data enables synthetic assets, onchain indices, and lending markets backed by real-world financial metrics.

“Chainlink Data Streams has been integrated as the preferred oracle infrastructure for Sei, bringing highly accurate and reliable price information to the Sei ecosystem,” Justin Barlow, Executive Director at Sei Development Foundation, said. “Data Streams’ ultra-low-latency delivery of market data, coupled with its battle-tested infrastructure, made it an obvious choice for the Sei ecosystem.”

Sei is optimized for high throughput, parallelized execution, and sub-second finality, while Chainlink provides secure and verifiable data. Together, they form a foundation that can support trading and lending protocols requiring real-time updates.

The Importance of Macroeconomic Data

Chainlink’s recent partnership with the U.S. Department of Commerce allows official Bureau of Economic Analysis data to be streamed onchain. This includes GDP, inflation indicators, and purchasing indexes.

Bringing government-published data into blockchain environments reduces reliance on offchain intermediaries and allows smart contracts to directly reference official statistics. This creates opportunities for institutional adoption of blockchain-based financial tools.

Institutional and DeFi Use Cases

With Chainlink Data Streams integrated into Sei, new categories of products become viable.

DeFi Lending and Borrowing

Protocols can use real-time equities and ETF data to support collateralized loans, dynamically adjusting margin requirements based on live price movements.

Trading and Derivatives

Low-latency feeds allow for derivatives and perpetual contracts that settle in sync with traditional financial markets, reducing slippage and risk.

Real-World Asset Markets

Macroeconomic data enables synthetic assets linked to GDP or inflation indices, making it possible to create onchain instruments that mirror real-world conditions.

Technical Benefits of the Integration

Unlike traditional oracle feeds that update every few minutes, Data Streams deliver sub-second performance. The infrastructure includes:

• High accuracy benchmarks: Price data aggregated from leading exchanges.
• Expanded data coverage: Capturing corporate actions and ETF rebalancing events.
• Decentralized validation: Ensuring no single point of failure.
• High uptime guarantees: Built on Chainlink’s production-tested infrastructure.

This combination reduces the risk of oracle manipulation while delivering the performance needed for trading applications.

Related Chainlink Developments

The Sei integration comes just a day after Chainlink’s Cross-Chain Interoperability Protocol (CCIP) went live on Aptos, a Move-based blockchain. CCIP enables secure token transfers across more than 60 blockchains and supports assets like Aave’s GHO stablecoin and Bedrock’s Bitcoin-backed tokens.

Chainlink has also facilitated Shiba Inu’s entry into cross-chain lending and enabled WLFI governance tokens to move between Ethereum, Solana, and BNB Chain. Together, these integrations demonstrate Chainlink’s expanding role as a standard for secure data and cross-chain functionality.

Conclusion

The integration of Chainlink Data Streams into Sei Network creates a reliable foundation for secure, real-time DeFi and trading applications. By combining Sei’s sub-second settlement with Chainlink’s low-latency oracle infrastructure, developers and institutions gain access to high-quality, verifiable data across equities, macroeconomic indicators, and digital assets. This alignment strengthens Sei’s role as a high-performance blockchain capable of supporting both consumer and institutional markets.

Resources:

1. Sei Network announcement about Chainlink Data Streams integration:
2. Chainlink CCIP Goes Live on Aptos - Press release by Chainlink and Aptos:
3. Chainlink X platform: