Criar uma Conta de Token

O Que É uma Conta de Token

Uma conta de token armazena tokens para uma cunhagem e um proprietário de conta de token na Solana.

Token Account Type
/// Account data.
#[repr(C)]
#[derive(Clone, Copy, Debug, Default, PartialEq)]
pub struct Account {
/// The mint associated with this account
pub mint: Pubkey,
/// The owner of this account.
pub owner: Pubkey,
/// The amount of tokens this account holds.
pub amount: u64,
/// If `delegate` is `Some` then `delegated_amount` represents
/// the amount authorized by the delegate
pub delegate: COption<Pubkey>,
/// The account's state
pub state: AccountState,
/// If `is_native.is_some`, this is a native token, and the value logs the
/// rent-exempt reserve. An Account is required to be rent-exempt, so
/// the value is used by the Processor to ensure that wrapped SOL
/// accounts do not drop below this threshold.
pub is_native: COption<u64>,
/// The amount delegated
pub delegated_amount: u64,
/// Optional authority to close the account.
pub close_authority: COption<Pubkey>,
}

Aqui, owner significa a autoridade que pode transferir, queimar ou delegar tokens da conta de token. O proprietário do programa da conta ainda é o Token Program ou Token Extensions Program.

Cada conta de token está vinculada a exatamente uma cunhagem, o que significa que a conta de token pode conter unidades de apenas um token, o token identificado pelo campo mint da conta de token.

O Que É uma Conta de Token Associada

Uma conta de token associada (ATA) é a conta de token padrão para uma carteira e cunhagem. O Associated Token Program deriva o endereço ATA a partir do endereço da carteira, endereço do programa de token e endereço de cunhagem.

Apenas contas de token criadas pelo Associated Token Program são chamadas de contas de token associadas.

O Associated Token Program é uma forma de criar uma conta de token em um endereço padrão e determinístico. A conta resultante ainda é uma conta de token pertencente ao Token Program ou Token Extensions Program, não ao Associated Token Program.

O Associated Token Program deriva o endereço ATA conforme mostrado em address.rs:

Associated Token Account Address Derivation
pub fn get_associated_token_address_and_bump_seed_internal(
wallet_address: &Pubkey,
token_mint_address: &Pubkey,
program_id: &Pubkey,
token_program_id: &Pubkey,
) -> (Pubkey, u8) {
Pubkey::find_program_address(
&[
&wallet_address.to_bytes(), // Owner's public key
&token_program_id.to_bytes(), // Token Program or Token Extension Program
&token_mint_address.to_bytes(), // Token mint address
],
program_id, // Associated Token Program ID
)
}

Para qualquer combinação de carteira, programa de token e cunhagem, existe exatamente um endereço ATA. O Associated Token Program cria uma conta de token padrão nesse endereço, e a conta resultante ainda utiliza o tipo Account definido pelo Token Program ou Token Extensions Program.

Como Criar uma Conta de Token Associada

A criação de uma conta de token associada utiliza a instrução Create ou CreateIdempotent do Associated Token Program. O Associated Token Program deriva o endereço da ATA, cria a conta no endereço da ATA e inicializa a conta como uma conta de token pertencente ao Token Program ou Token Extensions Program.

Recomendado

Para a maioria das aplicações, crie contas de token através do Associated Token Program em vez de criá-las chamando diretamente as instruções do System Program e Token Program. Uma conta de token associada utiliza um endereço determinístico derivado do proprietário, programa de token e mint, o que torna a conta de token padrão para um determinado mint mais fácil de ser encontrada por carteiras e aplicações.

Referência da Fonte

ItemDescriçãoFonte
CreateCria uma conta de token associada no endereço ATA derivado.Fonte
CreateIdempotentCria a conta de token associada, mas ainda é bem-sucedida se essa ATA já existir para o mesmo proprietário e mint.Fonte
process_create_associated_token_accountDeriva o endereço da ATA e utiliza create_pda_account mais CPIs para o programa de token selecionado para inicializar a conta de token. Quando o programa selecionado é o Token Extensions Program, o processador da ATA também inicializa a extensão de proprietário imutável.Fonte
create_pda_accountAuxiliar utilizado por process_create_associated_token_account para criar a conta PDA através de CPI para o System Program.Fonte

Typescript

Os exemplos Kit abaixo mostram a abordagem recomendada utilizando @solana/kit. Exemplos legados utilizando @solana/web3.js estão incluídos para referência.

Kit

import { generateKeyPairSigner } from "@solana/kit";
import { createLocalClient } from "@solana/kit-client-rpc";
import {
associatedTokenProgram,
findAssociatedTokenPda,
tokenProgram,
TOKEN_PROGRAM_ADDRESS
} from "@solana-program/token";
const client = await createLocalClient()
.use(tokenProgram())
.use(associatedTokenProgram());
const result = await client.associatedToken.instructions
.createAssociatedToken({
payer: client.payer, // Account funding account creation.
mint: mint.address, // Mint for the token this account holds.
owner: client.payer.address // Account that owns the token account.
})
.sendTransaction();
const [associatedTokenAddress] = await findAssociatedTokenPda({
mint: mint.address,
owner: client.payer.address,
tokenProgram: TOKEN_PROGRAM_ADDRESS
});
const tokenAccountData = await client.token.accounts.token.fetch(
associatedTokenAddress
);
console.log("Mint Address:", mint.address);
console.log("\nAssociated Token Account Address:", associatedTokenAddress);
console.log("Associated 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,
TOKEN_PROGRAM_ID
} from "@solana/spl-token";
const associatedTokenAccount = await createAssociatedTokenAccount(
connection, // Connection to the local validator.
feePayer, // Account funding account creation.
mintPubkey, // Mint for the token this account holds.
feePayer.publicKey, // Account that owns the token account.
{
commitment: "confirmed" // Confirmation options for the transaction.
},
TOKEN_PROGRAM_ID // Token program to invoke.
);
const tokenAccountData = await getAccount(
connection,
associatedTokenAccount,
"confirmed",
TOKEN_PROGRAM_ID
);
console.log("Mint Address:", mintPubkey.toBase58());
console.log(
"\nAssociated Token Account Address:",
associatedTokenAccount.toBase58()
);
console.log("Associated Token Account:", tokenAccountData);
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,
state::{Account, Mint},
};
#[tokio::main]
async fn main() -> Result<()> {
let client = RpcClient::new_with_commitment(
String::from("http://localhost:8899"),
CommitmentConfig::confirmed(),
);
let transaction = Transaction::new_signed_with_payer(
&[
create_associated_token_account(
&fee_payer.pubkey(), // Account funding account creation.
&fee_payer.pubkey(), // Account that owns the token account.
&mint.pubkey(), // Mint for the token this account holds.
&token_program_id(), // Token program that owns the account.
),
],
Some(&fee_payer.pubkey()),
&[&fee_payer],
latest_blockhash,
);
let transaction_signature = client.send_and_confirm_transaction(&transaction).await?;
let associated_token_account = get_associated_token_address(&fee_payer.pubkey(), &mint.pubkey());
let token_account = client.get_account(&associated_token_account).await?;
let token_data = Account::unpack(&token_account.data)?;
println!("Mint Address: {}", mint.pubkey());
println!(
"\nAssociated Token Account Address: {}",
associated_token_account
);
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,
)
from spl.token.constants import MINT_LEN, TOKEN_PROGRAM_ID
async def main():
rpc = AsyncClient("http://localhost:8899")
fee_payer = Keypair()
owner = Keypair()
async with rpc:
create_associated_token_account_instruction = create_associated_token_account(
payer=fee_payer.pubkey(), # Account funding account creation.
owner=owner.pubkey(), # Account that owns the token account.
mint=mint.pubkey(), # Mint for the token this account holds.
token_program_id=TOKEN_PROGRAM_ID, # Token program that owns the new token account.
)
latest_blockhash = await rpc.get_latest_blockhash()
transaction = Transaction(
[fee_payer],
Message([create_associated_token_account_instruction], fee_payer.pubkey()),
latest_blockhash.value.blockhash,
)
result = await rpc.send_transaction(transaction)
token_account_info = await token.get_account_info(associated_token_account)
token_account = {
key: str(value) if isinstance(value, Pubkey) else value
for key, value in token_account_info._asdict().items()
}
print("Mint Address:", mint.pubkey())
print("\nToken Account Address:", associated_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.

Como Criar uma Conta de Token

A criação de uma token account requer duas instruções:

  1. A instrução CreateAccount do System Program cria uma nova conta isenta de rent e atribui o Token Program como o proprietário do programa da nova conta.
  2. A instrução InitializeAccount, InitializeAccount2, ou InitializeAccount3 do Token Program inicializa a nova conta para um mint e proprietário.

Inclua a instrução CreateAccount e a instrução de inicialização da token account na mesma transação.

Durante a inicialização da token account, o Token Program verifica se a conta ainda não foi inicializada e se está isenta de rent.

A seção abaixo mostra como criar uma token account chamando diretamente as instruções do System Program e Token Program. Para a maioria das aplicações, use o Associated Token Program. Use chamadas diretas ao System Program e Token Program quando tiver um motivo específico para não usar uma associated token account ou quando precisar criar contas de token PDA personalizadas fazendo CPIs para as instruções do System Program e Token Program a partir do seu próprio programa Solana.

Referência de Código-Fonte

ItemDescriçãoToken ProgramToken Extensions Program
AccountOs campos base da token account armazenados em cada token account.FonteFonte
InitializeAccountUma instrução de inicialização de token account que espera a conta do proprietário e do sysvar de rent em sua lista de contas.FonteFonte
InitializeAccount2Uma instrução de inicialização de token account que passa o proprietário nos instruction data em vez da lista de contas.FonteFonte
InitializeAccount3Uma instrução de inicialização de token account que passa o proprietário nos instruction data e não requer a conta sysvar de rent.FonteFonte
_process_initialize_accountLógica compartilhada do processador para inicialização de token account.FonteFonte
process_initialize_accountManipulador público para InitializeAccount.FonteFonte
process_initialize_account2Manipulador público para InitializeAccount2.FonteFonte
process_initialize_account3Manipulador público para InitializeAccount3.FonteFonte

Typescript

Os exemplos abaixo mostram a abordagem recomendada usando @solana/kit. Exemplos legados usando @solana/web3.js estão incluídos para referência.

Kit

import { generateKeyPairSigner } from "@solana/kit";
import { createLocalClient } from "@solana/kit-client-rpc";
import { systemProgram } from "@solana-program/system";
import {
getTokenSize,
tokenProgram,
TOKEN_PROGRAM_ADDRESS
} from "@solana-program/token";
const client = await createLocalClient()
.use(systemProgram())
.use(tokenProgram());
const result = await client.sendTransaction([
client.system.instructions.createAccount({
newAccount: tokenAccount, // New token account to create.
lamports: rent, // Lamports funding the new account rent.
space, // Account size in bytes.
programAddress: TOKEN_PROGRAM_ADDRESS // Program that owns the new account.
}),
client.token.instructions.initializeAccount({
account: tokenAccount.address, // Token account to initialize.
mint: mint.address, // Mint for the token this account holds.
owner: client.payer.address // Account that owns the token account.
})
]);
const tokenAccountData = await client.token.accounts.token.fetch(
tokenAccount.address
);
console.log("Mint Address:", mint.address);
console.log("\nToken Account Address:", tokenAccount.address);
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 {
createAccount,
createMint,
getAccount,
TOKEN_PROGRAM_ID
} from "@solana/spl-token";
const tokenAccount = await createAccount(
connection, // Connection to the local validator.
feePayer, // Account paying transaction fees.
mintPubkey, // Mint for the token this account holds.
feePayer.publicKey, // Account that owns the token account.
Keypair.generate(), // New token account to create.
{
commitment: "confirmed" // Confirmation options for the transaction.
},
TOKEN_PROGRAM_ID // Token program to invoke.
);
const tokenAccountData = await getAccount(
connection,
tokenAccount,
"confirmed",
TOKEN_PROGRAM_ID
);
console.log("Mint Address:", mintPubkey.toBase58());
console.log("\nToken Account Address:", tokenAccount.toBase58());
console.log("Token Account:", tokenAccountData);
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_token_interface::{
id as token_program_id,
instruction::{initialize_account, initialize_mint},
state::{Account, Mint},
};
#[tokio::main]
async fn main() -> Result<()> {
let client = RpcClient::new_with_commitment(
String::from("http://localhost:8899"),
CommitmentConfig::confirmed(),
);
let token_account = Keypair::new();
let token_account_rent = client
.get_minimum_balance_for_rent_exemption(Account::LEN)
.await?;
let transaction = Transaction::new_signed_with_payer(
&[
create_account(
&fee_payer.pubkey(), // Account funding account creation.
&token_account.pubkey(), // New token account to create.
token_account_rent, // Lamports funding the new account rent.
Account::LEN as u64, // Account size in bytes.
&token_program_id(), // Program that owns the new account.
),
initialize_account(
&token_program_id(),
&token_account.pubkey(), // Token account to initialize.
&mint.pubkey(), // Mint for the token this account holds.
&fee_payer.pubkey(), // Account that owns the token account.
)?,
],
Some(&fee_payer.pubkey()),
&[&fee_payer, &token_account],
latest_blockhash,
);
let transaction_signature = client.send_and_confirm_transaction(&transaction).await?;
let token_account_data = client.get_account(&token_account.pubkey()).await?;
let token_data = Account::unpack(&token_account_data.data)?;
println!("Mint Address: {}", mint.pubkey());
println!("\nToken Account Address: {}", token_account.pubkey());
println!("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 (
initialize_account,
InitializeAccountParams,
initialize_mint,
InitializeMintParams,
)
from spl.token.constants import ACCOUNT_LEN, MINT_LEN, TOKEN_PROGRAM_ID
async def main():
rpc = AsyncClient("http://localhost:8899")
async with rpc:
token_account = Keypair()
token_account_rent = (await rpc.get_minimum_balance_for_rent_exemption(ACCOUNT_LEN)).value
create_token_account_instructions = [
create_account(
CreateAccountParams(
from_pubkey=fee_payer.pubkey(), # Account funding account creation.
to_pubkey=token_account.pubkey(), # New token account to create.
lamports=token_account_rent, # Lamports funding the new account rent.
space=ACCOUNT_LEN, # Account size in bytes.
owner=TOKEN_PROGRAM_ID, # Program that owns the new token account.
)
),
initialize_account(
InitializeAccountParams(
program_id=TOKEN_PROGRAM_ID, # Token program to invoke.
account=token_account.pubkey(), # Token account to initialize.
mint=mint.pubkey(), # Mint for the token this account holds.
owner=fee_payer.pubkey(), # Account that owns the token account.
)
),
]
latest_blockhash = await rpc.get_latest_blockhash()
transaction = Transaction(
[fee_payer, token_account],
Message(create_token_account_instructions, fee_payer.pubkey()),
latest_blockhash.value.blockhash,
)
result = await rpc.send_transaction(transaction)
token_account_info = await token.get_account_info(token_account.pubkey())
token_account_data = {
key: str(value) if isinstance(value, Pubkey) else value
for key, value in token_account_info._asdict().items()
}
print("Mint Address:", mint.pubkey())
print("\nToken Account Address:", token_account.pubkey())
print("Token Account:")
print(json.dumps(token_account_data, indent=2))
print("\nTransaction Signature:", result.value)
if __name__ == "__main__":
asyncio.run(main())
Console
Click to execute the code.

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