不可转让扩展

Name: 使用 Web3.js 的 Token2022
Availability: InStock

NonTransferable 扩展是一种 Mint 账户扩展，它可以防止代币在账户之间转移，使其永久绑定到当前持有者。

初始化铸币账户

要在 Mint 账户上初始化 MintCloseAuthority 扩展，我们需要使用 initializeNonTransferableMint() 函数。

以下是如何创建带有不可转让扩展的铸币账户：

import { Keypair, SystemProgram, Transaction, sendAndConfirmTransaction } from "@solana/web3.js";
import {
  createInitializeMintInstruction,
  createInitializeMintCloseAuthorityInstruction,
  getMintLen,
  ExtensionType,
  TOKEN_2022_PROGRAM_ID,
} from "@solana/spl-token";

const mint = Keypair.generate();

// Calculate the size needed for a Mint account with Transfer Fee extension
const mintLen = getMintLen([ExtensionType.MintCloseAuthority]);

// Calculate minimum lamports required for rent exemption
const lamports = await connection.getMinimumBalanceForRentExemption(mintLen);

// Create the account with the correct size and owner
const createAccountInstruction = SystemProgram.createAccount({
  fromPubkey: keypair.publicKey,
  newAccountPubkey: mint.publicKey,
  space: mintLen,
  lamports,
  programId: TOKEN_2022_PROGRAM_ID,
});

// Initialize the Non Transferable extension
const initializeMintNonTransferable = createInitializeNonTransferableMintInstruction(
  mint.publicKey,
  TOKEN_2022_PROGRAM_ID,
);

// Initialize the mint itself
const initializeMintInstruction = createInitializeMintInstruction(
  mint.publicKey,
  6,
  keypair.publicKey,
  null,
  TOKEN_2022_PROGRAM_ID,
);

// Combine all instructions in the correct order
const transaction = new Transaction().add(
  createAccountInstruction,
  initializeMintNonTransferable,
  initializeMintInstruction,
);

const signature = await sendAndConfirmTransaction(connection, transaction, [keypair, mint]);

console.log(
  `Mint created! Check out your TX here: https://explorer.solana.com/tx/${signature}?cluster=devnet`,
);

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