Acuñar tokens

¿Qué Hace la Acuñación?

La acuñación crea nuevas unidades de un token existente y aumenta el suministro total del mint.

Solo la autoridad de acuñación puede acuñar nuevos tokens. La cuenta de tokens de destino debe existir previamente y debe pertenecer al mismo mint.

Cómo Acuñar Tokens

La acuñación de tokens utiliza la instrucción MintTo o MintToChecked del Token Program.

Los ejemplos a continuación utilizan MintToChecked, que requiere que el llamador proporcione los decimales del mint para que la instrucción pueda verificar la precisión esperada del token antes de acuñar.

El native mint no admite acuñación.

Referencia del Código Fuente

ElementoDescripciónToken ProgramToken Extensions Program
MintEl estado del mint almacena la autoridad de acuñación y el suministro total de tokens.FuenteFuente
AccountEl estado de la cuenta de tokens almacena el saldo de destino actualizado por la acuñación.FuenteFuente
MintToUna instrucción de acuñación que acuña tokens a una cuenta de tokens existente sin requerir que el llamador proporcione los decimales del mint.FuenteFuente
MintToCheckedUna instrucción de acuñación que requiere que el llamador proporcione los decimales del mint y verifica ese valor antes de acuñar tokens a una cuenta de tokens existente.FuenteFuente
process_mint_toLógica de procesador compartida para acuñar tokens.FuenteFuente

Typescript

Los ejemplos Kit a continuación muestran el enfoque recomendado usando @solana/kit. Se incluyen ejemplos heredados usando @solana/web3.js como referencia.

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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