Q & A

Does Chainlink use Ethereum?

MC Derek Oct 29, 2020 3 Answers

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Yes, absolutely. Developers describe chainlink as “an ERC20 token, with the additional ERC223 'transfer and call' functionality of transfer (address, uint256, bytes), allowing tokens to be received and processed by contracts within a single transaction.” 

It also has a sizable portion of the code written in Go and is meant to integrate off-chain data.
Here is the chainlink source code: https://github.com/smartcontractkit/chainlink