Oracle
An on-chain feed of off-chain data — usually prices. Lending and CDP protocols rely on oracles to liquidate positions correctly.
See also
Terms related to Oracle
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CDP (Collateralised Debt Position)
Locking crypto as collateral to mint a stablecoin against it. You keep upside on the collateral while spending the borrowed dollars.
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Lending Protocol
A DeFi app where you deposit a token to be borrowed by others. You earn interest from the borrowers; they post collateral to back the loan.