LINK is Chainlink's native ERC-677 token (extension of ERC-20) that serves multiple critical functions:
Payment Mechanism:
Users pay node operators in LINK tokens for data requests
Fees incentivize honest behavior and high-quality data provision
Staking and Collateral:
Node operators stake LINK tokens as collateral
Staked tokens can be slashed for misbehavior
Creates economic incentives for honest reporting
Network Security:
Higher staked amounts increase network security
Economic guarantees back oracle services
Example: When a DeFi protocol requests price data, it pays LINK tokens to the oracle network. Node operators who provide accurate data receive payments, while those who provide false data risk losing their staked LINK tokens.
Rewriting in plainer words…
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