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Version: Canary 🚧

How to Mint Tokens

When you mint tokens, you increase the supply and transfer the new tokens to a specific token account.

import {
clusterApiUrl,
Connection,
PublicKey,
Keypair,
Transaction,
sendAndConfirmTransaction,
} from "@solana/web3.js";
import {
createMintToCheckedInstruction,
mintToChecked,
} from "@solana/spl-token";
import bs58 from "bs58";

(async () => {
// connection
const connection = new Connection(clusterApiUrl("devnet"), "confirmed");

// 5YNmS1R9nNSCDzb5a7mMJ1dwK9uHeAAF4CmPEwKgVWr8
const feePayer = Keypair.fromSecretKey(
bs58.decode(
"588FU4PktJWfGfxtzpAAXywSNt74AvtroVzGfKkVN1LwRuvHwKGr851uH8czM5qm4iqLbs1kKoMKtMJG4ATR7Ld2",
),
);

// G2FAbFQPFa5qKXCetoFZQEvF9BVvCKbvUZvodpVidnoY
const alice = Keypair.fromSecretKey(
bs58.decode(
"4NMwxzmYj2uvHuq8xoqhY8RXg63KSVJM1DXkpbmkUY7YQWuoyQgFnnzn6yo3CMnqZasnNPNuAT2TLwQsCaKkUddp",
),
);

const mintPubkey = new PublicKey(
"8mAKLjGGmjKTnmcXeyr3pr7iX13xXVjJJiL6RujDbSPV",
);

const tokenAccountPubkey = new PublicKey(
"2XYiFjmU1pCXmC2QfEAghk6S7UADseupkNQdnRBXszD5",
);

// 1) use build-in function
{
let txhash = await mintToChecked(
connection, // connection
feePayer, // fee payer
mintPubkey, // mint
tokenAccountPubkey, // receiver (should be a token account)
alice, // mint authority
1e8, // amount. if your decimals is 8, you mint 10^8 for 1 token.
8, // decimals
);
console.log(`txhash: ${txhash}`);

// if alice is a multisig account
// let txhash = await mintToChecked(
// connection, // connection
// feePayer, // fee payer
// mintPubkey, // mint
// tokenAccountPubkey, // receiver (should be a token account)
// alice.publicKey, // !! mint authority pubkey !!
// 1e8, // amount. if your decimals is 8, you mint 10^8 for 1 token.
// 8, // decimals
// [signer1, signer2 ...],
// );
}

// or

// 2) compose by yourself
{
let tx = new Transaction().add(
createMintToCheckedInstruction(
mintPubkey, // mint
tokenAccountPubkey, // receiver (should be a token account)
alice.publicKey, // mint authority
1e8, // amount. if your decimals is 8, you mint 10^8 for 1 token.
8, // decimals
// [signer1, signer2 ...], // only multisig account will use
),
);
console.log(
`txhash: ${await sendAndConfirmTransaction(connection, tx, [
feePayer,
alice /* fee payer + mint authority */,
])}`,
);
}
})();