Data Feed

Definition ∞ A data feed delivers external information, like prices, to blockchain applications. A data feed is a stream of information, typically from off-chain sources, supplied to smart contracts operating on a blockchain. These feeds are crucial for decentralized applications (dApps) that require real-world data to execute their logic, such as DeFi protocols needing current asset prices. Oracles act as the intermediaries responsible for aggregating, validating, and transmitting this data securely and reliably onto the chain.
Context ∞ The reliability and security of data feeds are constant topics in crypto news, especially concerning oracle manipulation attacks that can severely impact DeFi platforms. Innovations in decentralized oracle networks aim to improve data integrity and censorship resistance. The accuracy of these feeds directly influences the functionality and trustworthiness of a wide array of digital assets and blockchain-based financial products.