🔹 You must have an active app on Alchemy

Get and save the app key

🔹 You must have a crypto wallet, recommended Metamask

Get and save the private key and public address key

🔹 Host front-end API (ngrok, vercel, etc)

Get and save the URL api endpoint

🔹 Change the Solidity Contract baseURI value with URL of API

 function _baseURI() internal pure override returns (string memory) {
        return "<URL>/api/erc721/";
 }

🔹 Compile with HardHat to generate the artifacts

npx hardhat compile

 > artifacts/
      > @openzeppelin/contracts/
      > build-info/
      > contracts/Contract.sol

🔹 Change the hardhat.config.js value KEYs to Alchemy and Metamask keys

 require("@nomiclabs/hardhat-ethers");
 module.exports = {
   solidity: "0.8.0",
   defaultNetwork: "ropsten",
   networks: {
     hardhat: {},
     ropsten: {
       url: <ALCHEMY_KEY>,
       accounts: [`0x${<METAMASK_PRIVATE_KEY>}`]
     }
   }
 };

🔹 Run npm deploy and see the magic happen 🌟