In this smart conract tutorial we use Chainlink VRF to improve the lottery smart contract that we created in Part I by replacing the pseudo-random number generator code with a true, verifiable random number.
Chainlink is a decentralized blockchain oracle network built on Ethereum.
Part 1: Smart Contract Tutorial: Create a lottery smart contract in Solidity
☞ https://morioh.com/p/d9b6823de48f?f=5c21fb01c16e2556b555ab32
Part 3: Web3 Tutorial Project | Build a web3js dApp with a Solidity lottery smart contract on Ethereum
☞ https://morioh.com/p/41b7d3012b99?f=5c21fb01c16e2556b555ab32
Source code for this tutorial:
https://github.com/jspruance/block-explorer-tutorials/blob/main/smart-contracts/solidity/Lottery_w_Chainlink_VRF.sol
Chainlink docs:
https://docs.chain.link/docs/chainlink-vrf/
https://docs.chain.link/docs/vrf-contracts/
https://docs.chain.link/docs/acquire-link/
Rinkeby testnet faucet:
https://faucet.rinkeby.io/
LINK faucet: (select Rinkeby testnet):
https://faucets.chain.link/
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