如何使用 @solana/web3.js 从 Solana 中的自定义令牌中删除铸币权限？

Question

我已经能够使用使用web3.Keypair.generate()生成的自定义钱包创建自定义令牌，但是我现在如何限制这些令牌的供应或删除这些 SPL 令牌的铸造权限？

Answer 1

To prevent any more minting, you'll need set the minting authority to None . In JS, you can simply set the newAuthority to null during your call to setAuthority with authorityType = MintTokens in [1]

[1] https://github.com/solana-labs/solana-program-library/blob/36e886392b8c6619b275f6681aed6d8aae6e70f9/token/js/client/token.js#L985

Answer 2

Expanding on Jon Cinque's answer

import { Connection, clusterApiUrl, Keypair, PublicKey } from '@solana/web3.js'
import { Token, TOKEN_PROGRAM_ID } from '@solana/spl-token'
import * as bs58 from 'bs58';

(async () => {
  const connection = new Connection(clusterApiUrl('mainnet-beta'))

  const bytes = bs58.decode(process.env.PRIVATE_KEY)
  const account = Keypair.fromSecretKey(bytes)

  const tokenMint = new PublicKey('EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v')
  const token = new Token(connection, tokenMint, TOKEN_PROGRAM_ID, account)

  await token.setAuthority(tokenMint, null, 'MintTokens', account.publicKey, [account])

})()