BlockchainIntermediate#Infrastructure#Data
Oracle Network
O
Definicion
A decentralized service that provides reliable, real-time external data (like prices) to smart contracts.
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Concept Diagram
Puntos Clave
1
Oracles bridge off-chain data (prices, weather, sports results) to on-chain smart contracts.
2
Without oracles, DeFi protocols couldn't function — they need real-time price feeds for lending and trading.
3
Oracle manipulation is a major attack vector — flash loans can exploit stale or manipulated price data.
4
Decentralized oracle networks like Chainlink use multiple nodes to ensure data integrity.
Ejemplo Practico
A lending protocol uses Chainlink to get ETH/USD price. If ETH is $3,000 and a borrower has $4,500 in collateral, they can borrow up to $3,000 in USDC. The oracle updates every heartbeat to keep liquidations accurate.
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Terminos Relacionados
Blockchain
Data Availability (DA)The guarantee that the data required to verify a block is available to all network participants, critical for Rollup security.
Blockchain
NodeA computer that participates in a blockchain network by storing, validating, and broadcasting transaction data.
Blockchain
OracleA data feed that connects non-blockchain data (e.g., asset prices, weather) to smart contracts for execution.
Blockchain
Smart ContractA self-executing contract with the terms of the agreement between buyer and seller being directly written into lines of code.
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