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  3. /Oracle
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blockchain

Oracle

A service that brings external data onto the blockchain.

Definition

A service that brings external data onto the blockchain. Smart contracts can't access off-chain data directly, so oracles provide price feeds, weather data, sports scores, and more. Chainlink is the dominant oracle network.

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BlogThe Oracle Problem Still Hasn't Been Solved and It's Getting Worse

Related Terms

Smart Contract

Self-executing code stored on a blockchain that runs when conditions are met.

Chainlink

The most widely used oracle network in crypto.

ABI

Application Binary Interface.

Account Abstraction

A way to make crypto wallets behave more like normal apps by turning every account into a smart contract.

ERC-4337

The Ethereum standard for account abstraction without changing the core protocol.

Account Model

The way Ethereum and many other chains track balances.

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