Tokens minten

Wat Doet Minting?

Minting creëert nieuwe eenheden van een bestaande token en verhoogt de totale voorraad van de mint.

Alleen de mint-autoriteit kan nieuwe tokens minten. Het bestemmings-token account moet al bestaan en moet tot dezelfde mint behoren.

Hoe Tokens te Minten

Het minten van tokens maakt gebruik van de MintTo- of MintToChecked-instructie van het Token Program.

De onderstaande voorbeelden gebruiken MintToChecked, waarbij de aanroeper de decimalen van de mint moet opgeven, zodat de instructie de verwachte tokenprecisie kan verifiëren voordat er wordt gemint.

De native mint ondersteunt geen minting.

Bronverwijzing

ItemBeschrijvingToken ProgramToken Extensions Program
MintDe mint-state slaat de mint-autoriteit en totale tokenvoorraad op.BronBron
AccountDe token account-state slaat het bestemmingssaldo op dat wordt bijgewerkt door het minten.BronBron
MintToEen mint-instructie die tokens mint naar een bestaand token account zonder dat de aanroeper de decimalen van de mint hoeft op te geven.BronBron
MintToCheckedEen mint-instructie waarbij de aanroeper de decimalen van de mint moet opgeven en die waarde controleert voordat tokens naar een bestaand token account worden gemint.BronBron
process_mint_toGedeelde processorlogica voor het minten van tokens.BronBron

Typescript

De Kit voorbeelden hieronder tonen de aanbevolen aanpak met @solana/kit. Legacy-voorbeelden met @solana/web3.js zijn ter referentie opgenomen.

Kit

import { generateKeyPairSigner } from "@solana/kit";
import { createLocalClient } from "@solana/kit-client-rpc";
import {
findAssociatedTokenPda,
tokenProgram,
TOKEN_PROGRAM_ADDRESS
} from "@solana-program/token";
const client = await createLocalClient()
.use(tokenProgram());
const mint = await generateKeyPairSigner();
const result = await client.token.instructions
.mintToATA({
mint: mint.address, // Mint for the token being minted.
owner: client.payer.address, // Account that owns the token account receiving the minted tokens.
mintAuthority: client.payer, // Authority allowed to mint new tokens.
amount: 100n, // Token amount in base units.
decimals: 2 // Decimals defined on the mint account.
})
.sendTransaction();
const [tokenAccount] = await findAssociatedTokenPda({
mint: mint.address,
owner: client.payer.address,
tokenProgram: TOKEN_PROGRAM_ADDRESS
});
const mintAccount = await client.token.accounts.mint.fetch(mint.address);
const tokenAccountData = await client.token.accounts.token.fetch(tokenAccount);
console.log("Mint Address:", mint.address);
console.log("Mint Account:", mintAccount.data);
console.log("\nToken Account Address:", tokenAccount);
console.log("Token Account:", tokenAccountData.data);
console.log("\nTransaction Signature:", result.context.signature);
Console
Click to execute the code.

Web3.js

import { Connection, Keypair, LAMPORTS_PER_SOL } from "@solana/web3.js";
import {
createAssociatedTokenAccount,
createMint,
getAccount,
getMint,
mintToChecked,
TOKEN_PROGRAM_ID
} from "@solana/spl-token";
const result = await mintToChecked(
connection, // Connection to the local validator.
feePayer, // Account paying transaction fees.
mintPubkey, // Mint for the token being minted.
associatedTokenAccount, // Token account receiving the minted tokens.
feePayer, // Authority allowed to mint new tokens.
100, // Token amount in base units.
2, // Decimals defined on the mint account.
[], // Additional multisig signers.
{
commitment: "confirmed" // Confirmation options for the transaction.
},
TOKEN_PROGRAM_ID // Token program to invoke.
);
const mintAccount = await getMint(
connection,
mintPubkey,
"confirmed",
TOKEN_PROGRAM_ID
);
const tokenAccountData = await getAccount(
connection,
associatedTokenAccount,
"confirmed",
TOKEN_PROGRAM_ID
);
console.log("Mint Address:", mintPubkey.toBase58());
console.log("Mint Account:", mintAccount);
console.log(
"\nAssociated Token Account Address:",
associatedTokenAccount.toBase58()
);
console.log("Associated Token Account:", tokenAccountData);
console.log("\nTransaction Signature:", result);
Console
Click to execute the code.

Rust

Rust
use anyhow::Result;
use solana_client::nonblocking::rpc_client::RpcClient;
use solana_commitment_config::CommitmentConfig;
use solana_sdk::{
program_pack::Pack,
signature::{Keypair, Signer},
transaction::Transaction,
};
use solana_system_interface::instruction::create_account;
use spl_associated_token_account_interface::{
address::get_associated_token_address,
instruction::create_associated_token_account,
};
use spl_token_interface::{
id as token_program_id,
instruction::{initialize_mint, mint_to_checked},
state::{Account, Mint},
};
#[tokio::main]
async fn main() -> Result<()> {
let client = RpcClient::new_with_commitment(
String::from("http://localhost:8899"),
CommitmentConfig::confirmed(),
);
let associated_token_address = get_associated_token_address(&fee_payer.pubkey(), &mint.pubkey());
let mint_amount = 100;
let transaction = Transaction::new_signed_with_payer(
&[
mint_to_checked(
&token_program_id(), // Token program to invoke.
&mint.pubkey(), // Mint for the token being minted.
&associated_token_address, // Token account receiving the minted tokens.
&fee_payer.pubkey(), // Authority allowed to mint new tokens.
&[], // Additional multisig signers.
mint_amount, // Token amount in base units.
decimals, // Decimals defined on the mint account.
)?,
],
Some(&fee_payer.pubkey()),
&[&fee_payer],
latest_blockhash,
);
let transaction_signature = client.send_and_confirm_transaction(&transaction).await?;
let mint_account = client.get_account(&mint.pubkey()).await?;
let mint_data = Mint::unpack(&mint_account.data)?;
let token_account = client.get_account(&associated_token_address).await?;
let token_data = Account::unpack(&token_account.data)?;
println!("Mint Address: {}", mint.pubkey());
println!("Mint Account: {:#?}", mint_data);
println!(
"\nAssociated Token Account Address: {}",
associated_token_address
);
println!("Associated Token Account: {:#?}", token_data);
println!("\nTransaction Signature: {}", transaction_signature);
Ok(())
}
Console
Click to execute the code.

Python

Python
#!/usr/bin/env python3
import asyncio
import json
from solana.rpc.async_api import AsyncClient
from solders.keypair import Keypair
from solders.message import Message
from solders.pubkey import Pubkey
from solders.system_program import create_account, CreateAccountParams
from solders.transaction import Transaction
from spl.token.async_client import AsyncToken
from spl.token.instructions import (
create_associated_token_account,
get_associated_token_address,
initialize_mint,
InitializeMintParams,
mint_to_checked,
MintToCheckedParams,
)
from spl.token.constants import MINT_LEN, TOKEN_PROGRAM_ID
DECIMALS = 2
AMOUNT_TO_MINT = 100
async def main():
rpc = AsyncClient("http://localhost:8899")
async with rpc:
mint_tokens_instruction = mint_to_checked(
MintToCheckedParams(
program_id=TOKEN_PROGRAM_ID, # Token program to invoke.
mint=mint.pubkey(), # Mint for the token being minted.
dest=destination_token_account, # Token account receiving the minted tokens.
mint_authority=fee_payer.pubkey(), # Authority allowed to mint new tokens.
amount=AMOUNT_TO_MINT, # Token amount in base units.
decimals=DECIMALS, # Decimals defined on the mint account.
)
)
latest_blockhash = await rpc.get_latest_blockhash()
transaction = Transaction(
[fee_payer],
Message([mint_tokens_instruction], fee_payer.pubkey()),
latest_blockhash.value.blockhash,
)
result = await rpc.send_transaction(transaction)
mint_info = await token.get_mint_info()
destination_token_account_info = await token.get_account_info(destination_token_account)
mint_account = {
key: str(value) if isinstance(value, Pubkey) else value
for key, value in mint_info._asdict().items()
}
token_account = {
key: str(value) if isinstance(value, Pubkey) else value
for key, value in destination_token_account_info._asdict().items()
}
print("Mint Address:", mint.pubkey())
print("Mint Account:")
print(json.dumps(mint_account, indent=2))
print("\nToken Account Address:", destination_token_account)
print("Token Account:")
print(json.dumps(token_account, indent=2))
print("\nTransaction Signature:", result.value)
if __name__ == "__main__":
asyncio.run(main())
Console
Click to execute the code.

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