Documentación de SolanaTokens en SolanaConceptos básicos

Crear una token account

¿Qué es una token account?

Una token account almacena tu saldo de un token específico. Cada token account está asociada con exactamente un mint y realiza un seguimiento de tu saldo de tokens y detalles adicionales.

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>,

}

Ten en cuenta que en el código fuente, los desarrolladores llaman a una Token account un tipo Account . Tanto el Token Program como el Token Extension Program comparten la misma implementación base para la token account.

Para mantener tokens, necesitas una token account para ese mint específico. Cada token account realiza un seguimiento de:

  1. Mint: El tipo específico de token que contiene
  2. Owner: La autoridad que puede transferir tokens desde esta cuenta

Ejemplo: USD Coin (USDC)

  • Dirección del mint: EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v
  • Token account de Circle: 3emsAVdmGKERbHjmGfQ6oZ1e35dkf5iYcS6U4CPKFVaa
  • Esta cuenta contiene solo tokens USDC
  • Circle controla los tokens a través de la autoridad propietaria de la token account: 7VHUFJHWu2CuExkJcJrzhQPJ2oygupTWkL2A2For4BmE

Puedes ver los detalles de esta token account en Solana Explorer.

**Entendiendo la terminología de "Owner"

El término "owner" puede usarse en dos contextos diferentes:

  1. Owner de la Token Account: La autoridad que puede transferir, quemar o delegar tokens. Esto se almacena en los datos de la token account.

  2. Program Owner: El programa que posee la cuenta (siempre el Token Program o Token Extensions Program para las token accounts).

Cuando se trabaja con token accounts, "owner" típicamente se refiere a la autoridad que puede transferir tokens, no al programa que posee la cuenta.

¿Qué es una Associated Token Account?

Una associated token account (ATA) es la token account predeterminada para que una wallet mantenga un token específico. Utiliza una dirección determinista (PDA) creada por el Associated Token Program.

Solo las token accounts creadas por el Associated Token Program se denominan "associated token accounts."

Las ATAs utilizan direcciones deterministas, lo que facilita encontrar la token account de cualquier wallet para un mint dado. Consulta la implementación de derivación aquí.

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 cualquier combinación de wallet y token, hay exactamente una dirección ATA. Esto elimina la necesidad de rastrear manualmente las direcciones de token account—siempre puedes deducir la dirección correcta.

Cómo funciona el Associated Token Program

El Associated Token Program es un ayudante que:

  • Crea token accounts en direcciones deterministas (PDAs)
  • Realiza Invocaciones entre Programas (Cross Program Invocation o CPIs) al Token Program
  • No mantiene ningún estado por sí mismo

Las token accounts resultantes son propiedad del Token Program y utilizan la estructura estándar Account.

Cómo crear una token account

La creación de una token account requiere la instrucción InitializeAccount. Consulta la implementación aquí.

Necesitas dos instrucciones para crear una token account:

  1. System Program: Crear una cuenta con espacio asignado para una token account y transferir la propiedad al Token Program
  2. Token Program: Inicializar los datos de la token account

Typescript

import {

  airdropFactory,

  appendTransactionMessageInstructions,

  createSolanaRpc,

  createSolanaRpcSubscriptions,

  createTransactionMessage,

  generateKeyPairSigner,

  getSignatureFromTransaction,

  lamports,

  pipe,

  sendAndConfirmTransactionFactory,

  setTransactionMessageFeePayerSigner,

  setTransactionMessageLifetimeUsingBlockhash,

  signTransactionMessageWithSigners

} from "@solana/kit";

import { getCreateAccountInstruction } from "@solana-program/system";

import {

  getInitializeAccount2Instruction,

  getInitializeMintInstruction,

  getMintSize,

  getTokenSize,

  TOKEN_PROGRAM_ADDRESS

} from "@solana-program/token";



// Create Connection, local validator in this example

const rpc = createSolanaRpc("http://localhost:8899");

const rpcSubscriptions = createSolanaRpcSubscriptions("ws://localhost:8900");



// Get latest blockhash to include in transaction

const { value: latestBlockhash } = await rpc.getLatestBlockhash().send();



// Generate keypairs for fee payer

const feePayer = await generateKeyPairSigner();



// Fund fee payer

await airdropFactory({ rpc, rpcSubscriptions })({

  recipientAddress: feePayer.address,

  lamports: lamports(1_000_000_000n),

  commitment: "confirmed"

});



// Generate keypair to use as address of mint

const mint = await generateKeyPairSigner();



// Get default mint account size (in bytes), no extensions enabled

const space = BigInt(getMintSize());



// Get minimum balance for rent exemption

const rent = await rpc.getMinimumBalanceForRentExemption(space).send();



// Instruction to create new account for mint (token program)

// Invokes the system program

const createAccountInstruction = getCreateAccountInstruction({

  payer: feePayer,

  newAccount: mint,

  lamports: rent,

  space,

  programAddress: TOKEN_PROGRAM_ADDRESS

});



// Instruction to initialize mint account data

// Invokes the token program

const initializeMintInstruction = getInitializeMintInstruction({

  mint: mint.address,

  decimals: 2,

  mintAuthority: feePayer.address

});



const instructions = [createAccountInstruction, initializeMintInstruction];



// Create transaction message

const transactionMessage = pipe(

  createTransactionMessage({ version: 0 }), // Create transaction message

  (tx) => setTransactionMessageFeePayerSigner(feePayer, tx), // Set fee payer

  (tx) => setTransactionMessageLifetimeUsingBlockhash(latestBlockhash, tx), // Set transaction blockhash

  (tx) => appendTransactionMessageInstructions(instructions, tx) // Append instructions

);



// Sign transaction message with required signers (fee payer and mint keypair)

const signedTransaction =

  await signTransactionMessageWithSigners(transactionMessage);



// Send and confirm transaction

await sendAndConfirmTransactionFactory({ rpc, rpcSubscriptions })(

  signedTransaction,

  { commitment: "confirmed" }

);



// Get transaction signature

const transactionSignature = getSignatureFromTransaction(signedTransaction);



console.log("Mint Address:", mint.address);

console.log("Transaction Signature:", transactionSignature);



// Generate keypair to use as address of token account

const tokenAccount = await generateKeyPairSigner();



// Get token account size (in bytes)

const tokenAccountSpace = BigInt(getTokenSize());



// Get minimum balance for rent exemption

const tokenAccountRent = await rpc

  .getMinimumBalanceForRentExemption(tokenAccountSpace)

  .send();



// Instruction to create new account for token account (token program)

// Invokes the system program

const createTokenAccountInstruction = getCreateAccountInstruction({

  payer: feePayer,

  newAccount: tokenAccount,

  lamports: tokenAccountRent,

  space: tokenAccountSpace,

  programAddress: TOKEN_PROGRAM_ADDRESS

});



// Instruction to initialize token account data

// Invokes the token program

const initializeTokenAccountInstruction = getInitializeAccount2Instruction({

  account: tokenAccount.address,

  mint: mint.address,

  owner: feePayer.address

});



const instructions2 = [

  createTokenAccountInstruction,

  initializeTokenAccountInstruction

];



// Create transaction message for token account creation

const tokenAccountMessage = pipe(

  createTransactionMessage({ version: 0 }), // Create transaction message

  (tx) => setTransactionMessageFeePayerSigner(feePayer, tx), // Set fee payer

  (tx) => setTransactionMessageLifetimeUsingBlockhash(latestBlockhash, tx), // Set transaction blockhash

  (tx) => appendTransactionMessageInstructions(instructions2, tx) // Append instructions

);



// Sign transaction message with required signers (fee payer and token account keypair)

const signedTokenAccountTx =

  await signTransactionMessageWithSigners(tokenAccountMessage);



// Send and confirm transaction

await sendAndConfirmTransactionFactory({ rpc, rpcSubscriptions })(

  signedTokenAccountTx,

  { commitment: "confirmed" }

);



// Get transaction signature

const transactionSignature2 = getSignatureFromTransaction(signedTokenAccountTx);



console.log("Token Account Address:", tokenAccount.address);

console.log("Transaction Signature:", transactionSignature2);
Console
Click to execute the code.

Rust

use anyhow::Result;

use solana_client::nonblocking::rpc_client::RpcClient;

use solana_sdk::{

    commitment_config::CommitmentConfig,

    program_pack::Pack,

    signature::{Keypair, Signer},

    system_instruction::create_account,

    transaction::Transaction,

};

use spl_token::{

    id as token_program_id,

    instruction::{initialize_account, initialize_mint},

    state::{Account, Mint},

};



#[tokio::main]

async fn main() -> Result<()> {

    // Create connection to local validator

    let client = RpcClient::new_with_commitment(

        String::from("http://localhost:8899"),

        CommitmentConfig::confirmed(),

    );

    let latestBlockhash = client.get_latest_blockhash().await?;



    // Generate a new keypair for the fee payer

    let fee_payer = Keypair::new();



    // Airdrop 1 SOL to fee payer

    let airdrop_signature = client

        .request_airdrop(&fee_payer.pubkey(), 1_000_000_000)

        .await?;

    client.confirm_transaction(&airdrop_signature).await?;



    loop {

        let confirmed = client.confirm_transaction(&airdrop_signature).await?;

        if confirmed {

            break;

        }

    }



    // Generate keypair to use as address of mint

    let mint = Keypair::new();



    // Get default mint account size (in bytes), no extensions enabled

    let mint_space = Mint::LEN;

    let mint_rent = client

        .get_minimum_balance_for_rent_exemption(mint_space)

        .await?;



    // Instruction to create new account for mint (token program)

    let create_account_instruction = create_account(

        &fee_payer.pubkey(),      // payer

        &mint.pubkey(),           // new account (mint)

        mint_rent,                // lamports

        mint_space as u64,        // space

        &token_program_id(), // program id

    );



    // Instruction to initialize mint account data

    let initialize_mint_instruction = initialize_mint(

        &token_program_id(),

        &mint.pubkey(),            // mint

        &fee_payer.pubkey(),       // mint authority

        Some(&fee_payer.pubkey()), // freeze authority

        2,                         // decimals

    )?;



    // Create transaction and add instructions

    let transaction = Transaction::new_signed_with_payer(

        &[create_account_instruction, initialize_mint_instruction],

        Some(&fee_payer.pubkey()),

        &[&fee_payer, &mint],

        latestBlockhash,

    );



    // Send and confirm transaction

    let transaction_signature = client.send_and_confirm_transaction(&transaction).await?;



    println!("Mint Address: {}", mint.pubkey());

    println!("Transaction Signature: {}", transaction_signature);



    // Generate keypair to use as address of token account

    let token_account = Keypair::new();



    // Get token account size (in bytes)

    let token_account_space = Account::LEN;

    let token_account_rent = client

        .get_minimum_balance_for_rent_exemption(token_account_space)

        .await?;



    // Instruction to create new account for token account (token program)

    let create_token_account_instruction = create_account(

        &fee_payer.pubkey(),        // payer

        &token_account.pubkey(),    // new account (token account)

        token_account_rent,         // lamports

        token_account_space as u64, // space

        &token_program_id(),   // program id

    );



    // Instruction to initialize token account data

    let initialize_token_account_instruction = initialize_account(

        &token_program_id(),

        &token_account.pubkey(), // account

        &mint.pubkey(),          // mint

        &fee_payer.pubkey(),     // owner

    )?;



    // Create transaction and add instructions

    let transaction = Transaction::new_signed_with_payer(

        &[

            create_token_account_instruction,

            initialize_token_account_instruction,

        ],

        Some(&fee_payer.pubkey()),

        &[&fee_payer, &token_account],

        latestBlockhash,

    );



    // Send and confirm transaction

    let transaction_signature = client.send_and_confirm_transaction(&transaction).await?;



    println!("Token Account Address: {}", token_account.pubkey());

    println!("Transaction Signature: {}", transaction_signature);



    Ok(())

}
Console
Click to execute the code.

Cómo crear una associated token account

La creación de una Associated Token Account (ATA) requiere la instrucción Create. Consulta la implementación aquí.

Esta única instrucción maneja automáticamente la creación de la token account y su inicialización a través de Invocaciones entre Programas (Cross Program Invocation o CPI).

Typescript

import {

  airdropFactory,

  appendTransactionMessageInstructions,

  createSolanaRpc,

  createSolanaRpcSubscriptions,

  createTransactionMessage,

  generateKeyPairSigner,

  getSignatureFromTransaction,

  lamports,

  pipe,

  sendAndConfirmTransactionFactory,

  setTransactionMessageFeePayerSigner,

  setTransactionMessageLifetimeUsingBlockhash,

  signTransactionMessageWithSigners

} from "@solana/kit";

import { getCreateAccountInstruction } from "@solana-program/system";

import {

  getCreateAssociatedTokenInstructionAsync,

  getInitializeMintInstruction,

  getMintSize,

  TOKEN_PROGRAM_ADDRESS,

  findAssociatedTokenPda

} from "@solana-program/token";



// Create Connection, local validator in this example

const rpc = createSolanaRpc("http://localhost:8899");

const rpcSubscriptions = createSolanaRpcSubscriptions("ws://localhost:8900");



// Generate keypairs for fee payer

const feePayer = await generateKeyPairSigner();



// Fund fee payer

await airdropFactory({ rpc, rpcSubscriptions })({

  recipientAddress: feePayer.address,

  lamports: lamports(1_000_000_000n),

  commitment: "confirmed"

});



// Generate keypair to use as address of mint

const mint = await generateKeyPairSigner();



// Get default mint account size (in bytes), no extensions enabled

const space = BigInt(getMintSize());



// Get minimum balance for rent exemption

const rent = await rpc.getMinimumBalanceForRentExemption(space).send();



// Get latest blockhash to include in transaction

const { value: latestBlockhash } = await rpc.getLatestBlockhash().send();



// Instruction to create new account for mint (token program)

// Invokes the system program

const createAccountInstruction = getCreateAccountInstruction({

  payer: feePayer,

  newAccount: mint,

  lamports: rent,

  space,

  programAddress: TOKEN_PROGRAM_ADDRESS

});



// Instruction to initialize mint account data

// Invokes the token program

const initializeMintInstruction = getInitializeMintInstruction({

  mint: mint.address,

  decimals: 2,

  mintAuthority: feePayer.address

});



const instructions = [createAccountInstruction, initializeMintInstruction];



// Create transaction message

const transactionMessage = pipe(

  createTransactionMessage({ version: 0 }),

  (tx) => setTransactionMessageFeePayerSigner(feePayer, tx),

  (tx) => setTransactionMessageLifetimeUsingBlockhash(latestBlockhash, tx),

  (tx) => appendTransactionMessageInstructions(instructions, tx)

);



// Sign transaction message with all required signers

const signedTransaction =

  await signTransactionMessageWithSigners(transactionMessage);



// Send and confirm transaction

await sendAndConfirmTransactionFactory({ rpc, rpcSubscriptions })(

  signedTransaction,

  { commitment: "confirmed" }

);



// Get transaction signature

const transactionSignature = getSignatureFromTransaction(signedTransaction);



console.log("Mint Address:", mint.address.toString());

console.log("Transaction Signature:", transactionSignature);



// Use findAssociatedTokenPda to derive the ATA address

const [associatedTokenAddress] = await findAssociatedTokenPda({

  mint: mint.address,

  owner: feePayer.address,

  tokenProgram: TOKEN_PROGRAM_ADDRESS

});



console.log(

  "Associated Token Account Address:",

  associatedTokenAddress.toString()

);



// Get a fresh blockhash for the second transaction

const { value: latestBlockhash2 } = await rpc.getLatestBlockhash().send();



// Create instruction to create the associated token account

const createAtaInstruction = await getCreateAssociatedTokenInstructionAsync({

  payer: feePayer,

  mint: mint.address,

  owner: feePayer.address

});



// Create transaction message

const transactionMessage2 = pipe(

  createTransactionMessage({ version: 0 }),

  (tx) => setTransactionMessageFeePayerSigner(feePayer, tx),

  (tx) => setTransactionMessageLifetimeUsingBlockhash(latestBlockhash2, tx),

  (tx) => appendTransactionMessageInstructions([createAtaInstruction], tx)

);



// Sign transaction message with all required signers

const signedTransaction2 =

  await signTransactionMessageWithSigners(transactionMessage2);



// Send and confirm transaction

await sendAndConfirmTransactionFactory({ rpc, rpcSubscriptions })(

  signedTransaction2,

  { commitment: "confirmed" }

);



// Get transaction signature

const transactionSignature2 = getSignatureFromTransaction(signedTransaction2);

console.log("Transaction Signature:", transactionSignature2);
Console
Click to execute the code.

Rust

use anyhow::Result;

use solana_client::nonblocking::rpc_client::RpcClient;

use solana_sdk::{

    commitment_config::CommitmentConfig,

    program_pack::Pack,

    signature::{Keypair, Signer},

    system_instruction::create_account,

    transaction::Transaction,

};

use spl_associated_token_account::{

    get_associated_token_address_with_program_id, instruction::create_associated_token_account,

};

use spl_token::{id as token_program_id, instruction::initialize_mint, state::Mint};



#[tokio::main]

async fn main() -> Result<()> {

    // Create connection to local validator

    let client = RpcClient::new_with_commitment(

        String::from("http://localhost:8899"),

        CommitmentConfig::confirmed(),

    );

    let latestBlockhash = client.get_latest_blockhash().await?;



    // Generate a new keypair for the fee payer

    let fee_payer = Keypair::new();



    // Airdrop 1 SOL to fee payer

    let airdrop_signature = client

        .request_airdrop(&fee_payer.pubkey(), 1_000_000_000)

        .await?;

    client.confirm_transaction(&airdrop_signature).await?;



    loop {

        let confirmed = client.confirm_transaction(&airdrop_signature).await?;

        if confirmed {

            break;

        }

    }



    // Generate keypair to use as address of mint

    let mint = Keypair::new();



    // Get default mint account size (in bytes), no extensions enabled

    let mint_space = Mint::LEN;

    let mint_rent = client

        .get_minimum_balance_for_rent_exemption(mint_space)

        .await?;



    // Instruction to create new account for mint (token program)

    let create_account_instruction = create_account(

        &fee_payer.pubkey(),      // payer

        &mint.pubkey(),           // new account (mint)

        mint_rent,                // lamports

        mint_space as u64,        // space

        &token_program_id(), // program id

    );



    // Instruction to initialize mint account data

    let initialize_mint_instruction = initialize_mint(

        &token_program_id(),

        &mint.pubkey(),            // mint

        &fee_payer.pubkey(),       // mint authority

        Some(&fee_payer.pubkey()), // freeze authority

        2,                         // decimals

    )?;



    // Create transaction and add instructions

    let transaction = Transaction::new_signed_with_payer(

        &[create_account_instruction, initialize_mint_instruction],

        Some(&fee_payer.pubkey()),

        &[&fee_payer, &mint],

        latestBlockhash,

    );



    // Send and confirm transaction

    let transaction_signature = client.send_and_confirm_transaction(&transaction).await?;



    println!("Mint Address: {}", mint.pubkey());

    println!("Transaction Signature: {}", transaction_signature);



    // Get the latest blockhash for the next transaction

    let latestBlockhash = client.get_latest_blockhash().await?;



    // Derive the associated token account address for fee_payer

    let associated_token_account = get_associated_token_address_with_program_id(

        &fee_payer.pubkey(),      // owner

        &mint.pubkey(),           // mint

        &token_program_id(), // program_id

    );



    // Instruction to create associated token account

    let create_ata_instruction = create_associated_token_account(

        &fee_payer.pubkey(),      // funding address

        &fee_payer.pubkey(),      // wallet address (owner)

        &mint.pubkey(),           // mint address

        &token_program_id(), // program id

    );



    // Create transaction for associated token account creation

    let transaction = Transaction::new_signed_with_payer(

        &[create_ata_instruction],

        Some(&fee_payer.pubkey()),

        &[&fee_payer],

        latestBlockhash,

    );



    // Send and confirm transaction

    let transaction_signature = client.send_and_confirm_transaction(&transaction).await?;



    println!(

        "Associated Token Account Address: {}",

        associated_token_account.to_string()

    );

    println!("Transaction Signature: {}", transaction_signature);



    Ok(())

}
Console
Click to execute the code.

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