How to Create a Token
Creating tokens is done by creating what is called a "mint account". This mint account is later used to mint tokens to a user's token account.
import {
clusterApiUrl,
Connection,
Keypair,
sendAndConfirmTransaction,
SystemProgram,
Transaction,
} from "@solana/web3.js";
import {
createInitializeMintInstruction,
TOKEN_PROGRAM_ID,
MINT_SIZE,
getMinimumBalanceForRentExemptMint,
createMint,
} from "@solana/spl-token";
import bs58 from "bs58";
(async () => {
// connection
const connection = new Connection(clusterApiUrl("devnet"), "confirmed");
const recentBlockhash = await connection.getLatestBlockhash();
// 5YNmS1R9nNSCDzb5a7mMJ1dwK9uHeAAF4CmPEwKgVWr8
const feePayer = Keypair.fromSecretKey(
bs58.decode(
"588FU4PktJWfGfxtzpAAXywSNt74AvtroVzGfKkVN1LwRuvHwKGr851uH8czM5qm4iqLbs1kKoMKtMJG4ATR7Ld2",
),
);
// G2FAbFQPFa5qKXCetoFZQEvF9BVvCKbvUZvodpVidnoY
const alice = Keypair.fromSecretKey(
bs58.decode(
"4NMwxzmYj2uvHuq8xoqhY8RXg63KSVJM1DXkpbmkUY7YQWuoyQgFnnzn6yo3CMnqZasnNPNuAT2TLwQsCaKkUddp",
),
);
// 1) use build-in function
let mintPubkey = await createMint(
connection, // conneciton
feePayer, // fee payer
alice.publicKey, // mint authority
alice.publicKey, // freeze authority (you can use `null` to disable it. when you disable it, you can't turn it on again)
8, // decimals
);
console.log(`mint: ${mintPubkey.toBase58()}`);
// or
// 2) compose by yourself
const mint = Keypair.generate();
console.log(`mint: ${mint.publicKey.toBase58()}`);
const transaction = new Transaction().add(
// create mint account
SystemProgram.createAccount({
fromPubkey: feePayer.publicKey,
newAccountPubkey: mint.publicKey,
space: MINT_SIZE,
lamports: await getMinimumBalanceForRentExemptMint(connection),
programId: TOKEN_PROGRAM_ID,
}),
// init mint account
createInitializeMintInstruction(
mint.publicKey, // mint pubkey
8, // decimals
alice.publicKey, // mint authority
alice.publicKey, // freeze authority (you can use `null` to disable it. when you disable it, you can't turn it on again)
),
);
// Send transaction
const transactionSignature = await sendAndConfirmTransaction(
connection,
transaction,
[feePayer, mint], // Signers
);
console.log(`txhash: ${transactionSignature}`);
})();