不可转让扩展

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`);

使用 Web3.js 的 Token2022

不可转让扩展

初始化铸币账户