Delegado permanente

¿Qué es un delegado permanente?

La extensión de mint PermanentDelegate del Token Extensions Program asigna una autoridad de delegado al propio mint.

Un delegado permanente es una autoridad a nivel de mint que puede autorizar transferencias y quemas para cualquier token account de ese mint. Actúa como un delegado global para todas las cuentas de tokens del mint, y los propietarios de las cuentas de tokens no pueden revocar el delegado permanente de sus cuentas de tokens.

La autoridad del mint también puede rotar el delegado permanente más adelante con SetAuthority usando AuthorityType::PermanentDelegate.

Cómo crear y usar un delegado permanente

Para crear y usar un delegado permanente:

  1. Calcula el tamaño de la mint account y el rent necesario para el mint y la extensión PermanentDelegate.
  2. Crea la mint account con CreateAccount, inicializa PermanentDelegate e inicializa el mint con InitializeMint.
  3. Envía TransferChecked o BurnChecked firmado por el delegado permanente. El Token Program procesa esas instrucciones de la misma manera que si el propietario de la token account las hubiera firmado.

Calcular el tamaño de la cuenta

Calcula el tamaño de la mint account para el mint base más la extensión PermanentDelegate. Este es el tamaño utilizado en CreateAccount.

Calcular el rent

Calcula el rent usando el tamaño necesario para el mint más la extensión PermanentDelegate.

Crear la mint account

Crea la mint account con el espacio y lamports calculados.

Inicializar PermanentDelegate

Inicializa la extensión PermanentDelegate en el mint.

Inicializar el mint

Inicializa el mint con InitializeMint en la misma transacción.

Crear token accounts y acuñar tokens

Crea token accounts para el propietario y el destinatario, luego acuña tokens en la token account del propietario.

Transferir con el delegado permanente

Transfiere tokens con TransferChecked firmado por el delegado permanente.

Calcular el tamaño de la cuenta

Calcula el tamaño de la mint account para el mint base más la extensión PermanentDelegate. Este es el tamaño utilizado en CreateAccount.

Calcular el rent

Calcula el rent usando el tamaño necesario para el mint más la extensión PermanentDelegate.

Crear la mint account

Crea la mint account con el espacio y lamports calculados.

Inicializar PermanentDelegate

Inicializa la extensión PermanentDelegate en el mint.

Inicializar el mint

Inicializa el mint con InitializeMint en la misma transacción.

Crear token accounts y acuñar tokens

Crea token accounts para el propietario y el destinatario, luego acuña tokens en la token account del propietario.

Transferir con el delegado permanente

Transfiere tokens con TransferChecked firmado por el delegado permanente.

Example
const client = await createClient()
.use(generatedPayer())
.use(
solanaRpc({
rpcUrl: "http://localhost:8899",
rpcSubscriptionsUrl: "ws://localhost:8900"
})
)
.use(rpcAirdrop())
.use(airdropPayer(lamports(1_000_000_000n)));
const mint = await generateKeyPairSigner();
const owner = await generateKeyPairSigner();
const delegate = await generateKeyPairSigner();
const recipient = await generateKeyPairSigner();
const permanentDelegateExtension = extension("PermanentDelegate", {
delegate: delegate.address
});
const mintSpace = BigInt(getMintSize([permanentDelegateExtension]));

Orden de Instrucciones

InitializePermanentDelegate debe ir antes de InitializeMint. CreateAccount, InitializePermanentDelegate y InitializeMint deben incluirse en la misma transacción.

Referencia del Código Fuente

ElementoDescripciónFuente
PermanentDelegateExtensión de mint que almacena el delegado autorizado en cada token account del mint.Fuente
InitializePermanentDelegateInstrucción que inicializa el delegado permanente antes de InitializeMint.Fuente
SetAuthorityInstrucción base de token utilizada con AuthorityType::PermanentDelegate para rotar el delegado.Fuente
AuthorityType::PermanentDelegateDiscriminador de autoridad utilizado con SetAuthority para rotar el delegado permanente en un mint.Fuente
process_initialize_permanent_delegateLógica del procesador que escribe la extensión de delegado permanente en el mint.Fuente
process_set_authorityLógica del procesador que valida y rota el delegado permanente cuando se utiliza AuthorityType::PermanentDelegate.Fuente

Typescript

El ejemplo Kit a continuación utiliza las instrucciones generadas directamente. Se incluyen ejemplos heredados usando @solana/web3.js e @solana/spl-token como referencia.

Kit

Instructions
import {
lamports,
createClient,
generateKeyPairSigner,
unwrapOption
} from "@solana/kit";
import { solanaRpc, rpcAirdrop } from "@solana/kit-plugin-rpc";
import { generatedPayer, airdropPayer } from "@solana/kit-plugin-signer";
import { getCreateAccountInstruction } from "@solana-program/system";
import {
extension,
fetchMint,
fetchToken,
findAssociatedTokenPda,
getCreateAssociatedTokenInstructionAsync,
getInitializeMintInstruction,
getInitializePermanentDelegateInstruction,
getMintSize,
getMintToCheckedInstruction,
getTransferCheckedInstruction,
isExtension,
TOKEN_2022_PROGRAM_ADDRESS
} from "@solana-program/token-2022";
const client = await createClient()
.use(generatedPayer())
.use(
solanaRpc({
rpcUrl: "http://localhost:8899",
rpcSubscriptionsUrl: "ws://localhost:8900"
})
)
.use(rpcAirdrop())
.use(airdropPayer(lamports(1_000_000_000n)));
const mint = await generateKeyPairSigner();
const owner = await generateKeyPairSigner();
const delegate = await generateKeyPairSigner();
const recipient = await generateKeyPairSigner();
const permanentDelegateExtension = extension("PermanentDelegate", {
delegate: delegate.address
});
const mintSpace = BigInt(getMintSize([permanentDelegateExtension]));
const mintRent = await client.rpc
.getMinimumBalanceForRentExemption(mintSpace)
.send();
await client.sendTransaction([
getCreateAccountInstruction({
payer: client.payer, // Account funding the new mint account.
newAccount: mint, // New mint account to create.
lamports: mintRent, // Lamports funding the mint account rent.
space: mintSpace, // Account size in bytes for the mint plus PermanentDelegate.
programAddress: TOKEN_2022_PROGRAM_ADDRESS // Program that owns the mint account.
}),
getInitializePermanentDelegateInstruction({
mint: mint.address, // Mint account that stores the PermanentDelegate extension.
delegate: delegate.address // Permanent delegate authorized for all token accounts for the mint.
}),
getInitializeMintInstruction({
mint: mint.address, // Mint account to initialize.
decimals: 0, // Number of decimals for the token.
mintAuthority: client.payer.address, // Authority allowed to mint new tokens.
freezeAuthority: client.payer.address // Authority allowed to freeze token accounts.
})
]);
const [sourceToken] = await findAssociatedTokenPda({
mint: mint.address,
owner: owner.address,
tokenProgram: TOKEN_2022_PROGRAM_ADDRESS
});
const [destinationToken] = await findAssociatedTokenPda({
mint: mint.address,
owner: recipient.address,
tokenProgram: TOKEN_2022_PROGRAM_ADDRESS
});
await client.sendTransaction([
await getCreateAssociatedTokenInstructionAsync({
payer: client.payer, // Account funding the associated token account creation.
mint: mint.address, // Mint for the associated token account.
owner: owner.address // Owner of the source token account.
}),
await getCreateAssociatedTokenInstructionAsync({
payer: client.payer, // Account funding the associated token account creation.
mint: mint.address, // Mint for the associated token account.
owner: recipient.address // Owner of the destination token account.
}),
getMintToCheckedInstruction({
mint: mint.address, // Mint account that issues the tokens.
token: sourceToken, // Token account receiving the newly minted tokens.
mintAuthority: client.payer, // Signer authorized to mint new tokens.
amount: 1n, // Token amount in base units.
decimals: 0 // Decimals defined on the mint.
})
]);
await client.sendTransaction([
getTransferCheckedInstruction({
source: sourceToken, // Token account sending the transfer.
mint: mint.address, // Mint with the permanent delegate configuration.
destination: destinationToken, // Token account receiving the transfer.
authority: delegate, // Permanent delegate signing the transfer.
amount: 1n, // Token amount in base units.
decimals: 0 // Decimals defined on the mint.
})
]);
const destinationAccount = await fetchToken(client.rpc, destinationToken);
const mintAccount = await fetchMint(client.rpc, mint.address);
const permanentDelegate = (
unwrapOption(mintAccount.data.extensions) ?? []
).find((item) => isExtension("PermanentDelegate", item));
console.log("Mint Address:", mint.address);
console.log("Destination Amount:", destinationAccount.data.amount);
console.log("Permanent Delegate Extension:", permanentDelegate);
Console
Click to execute the code.

Web3.js

Instructions
import {
Connection,
Keypair,
sendAndConfirmTransaction,
SystemProgram,
Transaction,
LAMPORTS_PER_SOL
} from "@solana/web3.js";
import {
ASSOCIATED_TOKEN_PROGRAM_ID,
createAssociatedTokenAccountInstruction,
createInitializeMintInstruction,
createInitializePermanentDelegateInstruction,
createMintToCheckedInstruction,
createTransferCheckedInstruction,
ExtensionType,
getAccount,
getAssociatedTokenAddressSync,
getMint,
getMintLen,
getPermanentDelegate,
TOKEN_2022_PROGRAM_ID
} from "@solana/spl-token";
const connection = new Connection("http://localhost:8899", "confirmed");
const latestBlockhash = await connection.getLatestBlockhash();
const feePayer = Keypair.generate();
const owner = Keypair.generate();
const delegate = Keypair.generate();
const recipient = Keypair.generate();
const airdropSignature = await connection.requestAirdrop(
feePayer.publicKey,
5 * LAMPORTS_PER_SOL
);
await connection.confirmTransaction({
blockhash: latestBlockhash.blockhash,
lastValidBlockHeight: latestBlockhash.lastValidBlockHeight,
signature: airdropSignature
});
const extensions = [ExtensionType.PermanentDelegate];
const mint = Keypair.generate();
const mintLength = getMintLen(extensions);
const mintRent = await connection.getMinimumBalanceForRentExemption(mintLength);
const sourceToken = getAssociatedTokenAddressSync(
mint.publicKey,
owner.publicKey,
false,
TOKEN_2022_PROGRAM_ID,
ASSOCIATED_TOKEN_PROGRAM_ID
);
const destinationToken = getAssociatedTokenAddressSync(
mint.publicKey,
recipient.publicKey,
false,
TOKEN_2022_PROGRAM_ID,
ASSOCIATED_TOKEN_PROGRAM_ID
);
const createMintAccountInstruction = SystemProgram.createAccount({
fromPubkey: feePayer.publicKey, // Account funding the new mint account.
newAccountPubkey: mint.publicKey, // New mint account to create.
space: mintLength, // Account size in bytes for the mint plus PermanentDelegate.
lamports: mintRent, // Lamports funding the mint account rent.
programId: TOKEN_2022_PROGRAM_ID // Program that owns the mint account.
});
const initializePermanentDelegateInstruction =
createInitializePermanentDelegateInstruction(
mint.publicKey, // Mint account that stores the PermanentDelegate extension.
delegate.publicKey, // Permanent delegate authorized for all token accounts for the mint.
TOKEN_2022_PROGRAM_ID // Token program that owns the mint.
);
const initializeMintInstruction = createInitializeMintInstruction(
mint.publicKey, // Mint account to initialize.
0, // Number of decimals for the token.
feePayer.publicKey, // Authority allowed to mint new tokens.
feePayer.publicKey, // Authority allowed to freeze token accounts.
TOKEN_2022_PROGRAM_ID // Program that owns the mint account.
);
await sendAndConfirmTransaction(
connection,
new Transaction().add(
createMintAccountInstruction,
initializePermanentDelegateInstruction,
initializeMintInstruction
),
[feePayer, mint],
{
commitment: "confirmed"
}
);
await sendAndConfirmTransaction(
connection,
new Transaction().add(
createAssociatedTokenAccountInstruction(
feePayer.publicKey, // Account funding the associated token account creation.
sourceToken, // Associated token account address to create.
owner.publicKey, // Owner of the source token account.
mint.publicKey, // Mint for the associated token account.
TOKEN_2022_PROGRAM_ID, // Token program that owns the token account.
ASSOCIATED_TOKEN_PROGRAM_ID // Associated Token Program that creates the account.
),
createAssociatedTokenAccountInstruction(
feePayer.publicKey, // Account funding the associated token account creation.
destinationToken, // Associated token account address to create.
recipient.publicKey, // Owner of the destination token account.
mint.publicKey, // Mint for the associated token account.
TOKEN_2022_PROGRAM_ID, // Token program that owns the token account.
ASSOCIATED_TOKEN_PROGRAM_ID // Associated Token Program that creates the account.
),
createMintToCheckedInstruction(
mint.publicKey, // Mint account that issues the tokens.
sourceToken, // Token account receiving the newly minted tokens.
feePayer.publicKey, // Signer authorized to mint new tokens.
1, // Token amount in base units.
0, // Decimals defined on the mint.
[], // Additional multisig signers.
TOKEN_2022_PROGRAM_ID // Token program that owns the mint and token account.
)
),
[feePayer],
{
commitment: "confirmed"
}
);
await sendAndConfirmTransaction(
connection,
new Transaction().add(
createTransferCheckedInstruction(
sourceToken, // Token account sending the transfer.
mint.publicKey, // Mint with the permanent delegate configuration.
destinationToken, // Token account receiving the transfer.
delegate.publicKey, // Permanent delegate signing the transfer.
1, // Token amount in base units.
0, // Decimals defined on the mint.
[], // Additional multisig signers.
TOKEN_2022_PROGRAM_ID // Token program that processes the transfer.
)
),
[feePayer, delegate],
{
commitment: "confirmed"
}
);
const destinationAccount = await getAccount(
connection,
destinationToken,
"confirmed",
TOKEN_2022_PROGRAM_ID
);
const mintAccount = await getMint(
connection,
mint.publicKey,
"confirmed",
TOKEN_2022_PROGRAM_ID
);
const permanentDelegate = getPermanentDelegate(mintAccount);
console.log("Mint Address:", mint.publicKey.toBase58());
console.log("Destination Amount:", destinationAccount.amount.toString());
console.log("Permanent Delegate Extension:", permanentDelegate);
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::{
signature::{Keypair, Signer},
transaction::Transaction,
};
use solana_system_interface::instruction::create_account;
use spl_associated_token_account_interface::{
address::get_associated_token_address_with_program_id,
instruction::create_associated_token_account,
};
use spl_token_2022_interface::{
extension::{
permanent_delegate::PermanentDelegate, BaseStateWithExtensions, ExtensionType,
StateWithExtensions,
},
instruction::{
initialize_mint, initialize_permanent_delegate, mint_to_checked, transfer_checked,
},
state::{Account, Mint},
ID as TOKEN_2022_PROGRAM_ID,
};
#[tokio::main]
async fn main() -> Result<()> {
let client = RpcClient::new_with_commitment(
String::from("http://localhost:8899"),
CommitmentConfig::confirmed(),
);
let fee_payer = Keypair::new();
let owner = Keypair::new();
let delegate = Keypair::new();
let recipient = Keypair::new();
let airdrop_signature = client
.request_airdrop(&fee_payer.pubkey(), 5_000_000_000)
.await?;
loop {
let confirmed = client.confirm_transaction(&airdrop_signature).await?;
if confirmed {
break;
}
}
let mint = Keypair::new();
let mint_space =
ExtensionType::try_calculate_account_len::<Mint>(&[ExtensionType::PermanentDelegate])?;
let mint_rent = client
.get_minimum_balance_for_rent_exemption(mint_space)
.await?;
let create_mint_account_instruction = create_account(
&fee_payer.pubkey(), // Account funding the new mint account.
&mint.pubkey(), // New mint account to create.
mint_rent, // Lamports funding the mint account rent.
mint_space as u64, // Account size in bytes for the mint plus PermanentDelegate.
&TOKEN_2022_PROGRAM_ID, // Program that owns the mint account.
);
let initialize_permanent_delegate_ix = initialize_permanent_delegate(
&TOKEN_2022_PROGRAM_ID, // Token program that owns the mint.
&mint.pubkey(), // Mint account that stores the PermanentDelegate extension.
&delegate.pubkey(), // Permanent delegate authorized for all token accounts for the mint.
)?;
let initialize_mint_instruction = initialize_mint(
&TOKEN_2022_PROGRAM_ID, // Program that owns the mint account.
&mint.pubkey(), // Mint account to initialize.
&fee_payer.pubkey(), // Authority allowed to mint new tokens.
Some(&fee_payer.pubkey()), // Authority allowed to freeze token accounts.
0, // Number of decimals for the token.
)?;
let create_mint_transaction = Transaction::new_signed_with_payer(
&[
create_mint_account_instruction,
initialize_permanent_delegate_ix,
initialize_mint_instruction,
],
Some(&fee_payer.pubkey()),
&[&fee_payer, &mint],
client.get_latest_blockhash().await?,
);
client
.send_and_confirm_transaction(&create_mint_transaction)
.await?;
let source_token = get_associated_token_address_with_program_id(
&owner.pubkey(),
&mint.pubkey(),
&TOKEN_2022_PROGRAM_ID,
);
let destination_token = get_associated_token_address_with_program_id(
&recipient.pubkey(),
&mint.pubkey(),
&TOKEN_2022_PROGRAM_ID,
);
let create_token_accounts_transaction = Transaction::new_signed_with_payer(
&[
create_associated_token_account(
&fee_payer.pubkey(), // Account funding the associated token account creation.
&owner.pubkey(), // Owner of the source token account.
&mint.pubkey(), // Mint for the associated token account.
&TOKEN_2022_PROGRAM_ID, // Token program that owns the token account.
),
create_associated_token_account(
&fee_payer.pubkey(), // Account funding the associated token account creation.
&recipient.pubkey(), // Owner of the destination token account.
&mint.pubkey(), // Mint for the associated token account.
&TOKEN_2022_PROGRAM_ID, // Token program that owns the token account.
),
mint_to_checked(
&TOKEN_2022_PROGRAM_ID, // Token program that owns the mint and token account.
&mint.pubkey(), // Mint account that issues the tokens.
&source_token, // Token account receiving the newly minted tokens.
&fee_payer.pubkey(), // Signer authorized to mint new tokens.
&[&fee_payer.pubkey()], // Additional multisig signers.
1, // Token amount in base units.
0, // Decimals defined on the mint.
)?,
],
Some(&fee_payer.pubkey()),
&[&fee_payer],
client.get_latest_blockhash().await?,
);
client
.send_and_confirm_transaction(&create_token_accounts_transaction)
.await?;
let transfer_transaction = Transaction::new_signed_with_payer(
&[
transfer_checked(
&TOKEN_2022_PROGRAM_ID, // Token program that processes the transfer.
&source_token, // Token account sending the transfer.
&mint.pubkey(), // Mint with the permanent delegate configuration.
&destination_token, // Token account receiving the transfer.
&delegate.pubkey(), // Permanent delegate signing the transfer.
&[&delegate.pubkey()], // Additional multisig signers.
1, // Token amount in base units.
0, // Decimals defined on the mint.
)?,
],
Some(&fee_payer.pubkey()),
&[&fee_payer, &delegate],
client.get_latest_blockhash().await?,
);
client
.send_and_confirm_transaction(&transfer_transaction)
.await?;
let destination_account = client.get_account(&destination_token).await?;
let destination_state =
StateWithExtensions::<Account>::unpack(&destination_account.data)?;
let mint_account = client.get_account(&mint.pubkey()).await?;
let mint_state = StateWithExtensions::<Mint>::unpack(&mint_account.data)?;
let permanent_delegate = mint_state.get_extension::<PermanentDelegate>()?;
println!("Mint Address: {}", mint.pubkey());
println!(
"Destination Amount: {}",
u64::from(destination_state.base.amount)
);
println!("Permanent Delegate Extension: {:?}", permanent_delegate);
Ok(())
}
Console
Click to execute the code.

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