i can read about it?
The LINK token is an ERC677 token with the additional function "callAndTransfer" that allows to initiate a transaction and execute a contract in a single transaction for gas optimization. LINK is used to pay Chainlink node operators for their oracle services (on-chain data aggregation and submission & off-chain computation services). In addition, once Chainlink staking goes live, Chainlink node operators will be able to deposit a specific amount of LINK as collateral in order to be elegible to service specific requests. This was first outlined in the original whitepaper. See also: https://blog.chain.link/explicit-staking-in-chainlink-2-0/
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