NextJs-Hardhat-Ethereum-Tailwind-Firebase-Dapp-Boilerplate

NextJS module that consist lots of packages and config files

In order to save data off chain on firebase you need to create a firebase account and firestore database. After that you need to create collection and set up firebase Config file; Firebase will save the addresses which has joined whitelist outside the blockchain. So you can save another input as well to save gas in smart contracts.