Mint NFTs on Solana using Metaplex and Anchor

Follow along with the tutorial blog post on medium or mirror.xyz

[Devnet Test Tutorial]

• Required Tools & Libraries
  • Solana CLI Tools — The official Solana CLI toolset
  • Anchor Framework — A high-level framework for developing Solana programs. This is a must unless you’re a god-level dev, in which case you're not reading this blog. Lol.
  • Solana/web3.js — A Solana version of web3.js
  • Solana/spl-token — A package to work with spl tokens
  • Mocha — A JS testing tool
  • Phantom Wallet

1. Set devnet config of solana and generate solana key fair

   • $ solana config set --url devnet
   • $ solana-keygen new
   • If you execute the command, the solana private key is generated in the default root (default: /Users//.config/solana/id.json).
   • In anchor-based projects (most of that), need the solana key fair in the local environment.

2. Find the public key

   • $ vim /Users/<user>/.config/solana/id.json
   • Copy the private key ( [23, 123, 32, ....] )
   • private key to base58 converting code
   • Add a private key to the phantom wallet and check the public key (address)

// exporting from a bs58 private key to an Uint8Array
// == from phantom private key to solana cli id.json key file
// npm install bs58 @solana/web3.js

const web3 = require("@solana/web3.js");
const bs58 = require('bs58');
let secretKey = bs58.decode("[base58 private key here]");
console.log(`[${web3.Keypair.fromSecretKey(secretKey).secretKey}]`);

// exporting back from Uint8Array to bs58 private key
// == from solana cli id.json key file to phantom private key

const bs58 = require('bs58');
privkey = new Uint8Array([111, 43, 24, ...]); // content of id.json here
console.log(bs58.encode(privkey));

3. airdrop 1 sol to the user address

   • $ solana airdrop 1 <ADDRESS>
   • In Solana system need at least 1 sol in the account to make a transaction. So, we need airdrop 1 sol this account for minting (deploy or pay fee, etc.)
   • This project needs about 1.5 sol for deploying the contract. So, you should execute the airdrop at least 4-5 times (for deploying and testing).

4. Setting Custom Path, Value

   • Some values need to be changed depending on each local path.
   • Check the Anchor.toml > [provider]
     • cluster = "devnet"
     • wallet = "/Users//.config/solana/id.json"
     • Check the path.

5. build, deploy, and test

   • Now, you can execute the test script.
   • $ yarn install
   • $ anchor build
   • $ anchor deploy
     • when deployment is completed, you can get the program_id (That is related metaplex nft)
     • Replace the program Id in the Anchor.toml > [programs.devnet] > metaplex_anchor_nft
   • $ anchor test

6. check the nft in your phantom wallet.

   • If the anchor test is completed successfully, you can obtain the 1 nft on your account.
   • Check the phantom wallet -> Your Collectibles