Chainlink Labs Developer Interview
summary
Live demo builds and deploys Solidity contracts with Remix + MetaMask on Rinkeby/Kovan to read Chainlink price feeds, register Keepers, request VRF randomness and call an external API. A counter upkeep triggers every 30 seconds after registering an upkeep funded with 7–10 LINK, a token minter mints 1 token per minute via Keepers and the wallet moves from ~5.27 to ~6 then ~14 to ~27.27 tokens. VRF uses a subscription funded with ~3 LINK and returns two random words (one request later) which successfully mints a random 1–10 token payout.
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chapters (10)
- 0:00Introduction
- 4:00Chainlink data feeds
- 9:51Token with price feed
- 16:17Chainlink Keepers demo
- 22:42Register Keepers contracts
- 30:35Chainlink VRF explained
- 34:11VRF subscriptions setup
- 41:01Token raffle minting
- 50:26Chainlink Any API
- 56:05Summary
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