A repository implementing NFT's with the use of chainlink PriceFeeds and IPFS.
We go through creating 3 different kinds of NFTs.
git --version
and you see a response like git version x.x.x
node --version
and get an ouput like: vx.x.x
npm
yarn --version
and get an output like: x.x.x
npm
or corepack
git clone https://github.com/UdaySingh131105/Hardhat-nft-fcc.git
cd hardhat-nft-fcc
yarn
Deploy:
yarn hardhat deploy
yarn hardhat test
yarn hardhat coverage
You'll want to set your SEPOLIA_RPC_URL
and PRIVATE_KEY
as environment variables. You can add them to a .env
file, similar to what you see in .env.example
.
PRIVATE_KEY
: The private key of your account (like from metamask). NOTE: FOR DEVELOPMENT, PLEASE USE A KEY THAT DOESN'T HAVE ANY REAL FUNDS ASSOCIATED WITH IT.
SEPOLIA_RPC_URL
: This is url of the sepolia testnet node you're working with. You can get setup with one for free from Alchemy
Head over to faucets.chain.link and get some tesnet ETH & LINK. You should see the ETH and LINK show up in your metamask. You can read more on setting up your wallet with LINK.
Head over to vrf.chain.link and setup a new subscription, and get a subscriptionId. You can reuse an old subscription if you already have one.
You can follow the instructions if you get lost. You should leave this step with:
A subscription ID
Your subscription should be funded with LINK
Deploy
In your helper-hardhat-config.ts
add your subscriptionId
under the section of the chainId you're using (aka, if you're deploying to sepolia, add your subscriptionId
in the subscriptionId
field under the 11155111
section.)
Then run:
yarn hardhat deploy --network sepolia --tags main
We only deploy the main
tags, since we need to add our RandomIpfsNft
contract as a consumer.
Go back to vrf.chain.link and under your subscription add Add consumer
and add your contract address. You should also fund the contract with a minimum of 1 LINK.
Then run:
yarn hardhat deploy --network sepolia --tags mint
To get a USD estimation of gas cost, you'll need a INFURA_API_KEY
environment variable. You can get one for free from Infura.
Then, uncomment the line infura: INFURA_API_KEY,
in hardhat.config.ts
to get the USD estimation. Just note, everytime you run your tests it will use an API call, so it might make sense to have using coinmarketcap disabled until you need it. You can disable it by just commenting the line back out.
If you deploy to a testnet or mainnet, you can verify it if you get an API Key from Etherscan and set it as an environemnt variable named ETHERSCAN_API_KEY
. You can pop it into your .env
file as seen in the .env.example
.
In it's current state, if you have your api key set, it will auto verify sepolia contracts!
However, you can manual verify with:
yarn hardhat verify --constructor-args arguments.ts DEPLOYED_CONTRACT_ADDRESS
To check linting / code formatting:
yarn lint
or, to fix:
yarn lint:fix