Pembayaran dengan memo

Program memo Solana memungkinkan Anda melampirkan nomor invoice, ID pesanan, atau referensi kustom ke pembayaran apa pun. Memo ini dicatat secara permanen on-chain dan terlihat dalam log transaksi, memudahkan pencocokan pembayaran dengan sistem internal Anda.

Cara kerjanya

Program Memo menulis teks ke log transaksi. Log ini diindeks oleh explorer dan penyedia RPC, membuat memo dapat dicari untuk rekonsiliasi pembayaran.

Lihat Cara kerja pembayaran di Solana untuk konsep pembayaran inti.

Menambahkan memo memerlukan pembuatan instruksi secara langsung, yang memberi Anda kontrol atas apa yang disertakan dalam transaksi.

Langkah-langkah di bawah ini menunjukkan alur inti. Lihat Demo untuk kode lengkap yang dapat dijalankan.

Impor program Memo

Impor getAddMemoInstruction dari @solana-program/memo untuk membuat instruksi memo.

Buat instruksi transfer

Buat instruksi transfer token dengan menentukan ATA sumber, ATA tujuan, authority (penandatangan), dan jumlah dalam unit dasar.

Buat instruksi memo

Buat instruksi memo dengan pesan. Pesan ini akan terlihat dalam log program transaksi.

Kirim transaksi dengan memo

Gabungkan instruksi transfer dan memo dalam satu transaksi.

Lihat memo di log transaksi

Setelah transaksi dikonfirmasi, ambil untuk melihat memo di log. Memo muncul sebagai pesan log dari program Memo.

Example Transaction Logs

"Program TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb invoke [1]",
"Program log: Instruction: Transfer",
"Program TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb consumed 1682 of 200000 compute units",
"Program TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb success",
"Program MemoSq4gqABAXKb96qnH8TysNcWxMyWCqXgDLGmfcHr invoke [1]",
'Program log: Memo (len 46): "Payment for services rendered - Invoice #12345"',
"Program MemoSq4gqABAXKb96qnH8TysNcWxMyWCqXgDLGmfcHr consumed 18097 of 198318 compute units",
"Program MemoSq4gqABAXKb96qnH8TysNcWxMyWCqXgDLGmfcHr success",
"Program ComputeBudget111111111111111111111111111111 invoke [1]",
"Program ComputeBudget111111111111111111111111111111 success"

Impor program Memo

Impor getAddMemoInstruction dari @solana-program/memo untuk membuat instruksi memo.

Buat instruksi transfer

Buat instruksi transfer token dengan menentukan ATA sumber, ATA tujuan, authority (penandatangan), dan jumlah dalam unit dasar.

Buat instruksi memo

Buat instruksi memo dengan pesan. Pesan ini akan terlihat dalam log program transaksi.

Kirim transaksi dengan memo

Gabungkan instruksi transfer dan memo dalam satu transaksi.

Lihat memo di log transaksi

Setelah transaksi dikonfirmasi, ambil untuk melihat memo di log. Memo muncul sebagai pesan log dari program Memo.

Example Transaction Logs

"Program TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb invoke [1]",
"Program log: Instruction: Transfer",
"Program TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb consumed 1682 of 200000 compute units",
"Program TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb success",
"Program MemoSq4gqABAXKb96qnH8TysNcWxMyWCqXgDLGmfcHr invoke [1]",
'Program log: Memo (len 46): "Payment for services rendered - Invoice #12345"',
"Program MemoSq4gqABAXKb96qnH8TysNcWxMyWCqXgDLGmfcHr consumed 18097 of 198318 compute units",
"Program MemoSq4gqABAXKb96qnH8TysNcWxMyWCqXgDLGmfcHr success",
"Program ComputeBudget111111111111111111111111111111 invoke [1]",
"Program ComputeBudget111111111111111111111111111111 success"

Payment with Memo

import { getAddMemoInstruction } from "@solana-program/memo";

Demo



// Generate keypairs for sender and recipient
const sender = (await generateKeypair()).signer;
const recipient = (await generateKeypair()).signer;

console.log("Sender Address:", sender.address);
console.log("Recipient Address:", recipient.address);

// Demo Setup: Create client, mint account, token accounts, and fund with initial tokens
const { client, mint } = await demoSetup(sender, recipient);

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

// Derive the Associated Token Accounts addresses (ATAs) for sender and recipient
const [senderAta] = await findAssociatedTokenPda({
  mint: mint.address,
  owner: sender.address,
  tokenProgram: TOKEN_2022_PROGRAM_ADDRESS
});

const [recipientAta] = await findAssociatedTokenPda({
  mint: mint.address,
  owner: recipient.address,
  tokenProgram: TOKEN_2022_PROGRAM_ADDRESS
});

console.log("Sender Token Account:", senderAta.toString());
console.log("Recipient Token Account:", recipientAta.toString());

// =============================================================================
// Token Payment with Memo Demo
// =============================================================================

// Create instruction to transfer tokens from sender to recipient
// Transferring 250,000 base units = 0.25 tokens (with 6 decimals)
const transferInstruction = getTransferInstruction({
  source: senderAta,
  destination: recipientAta,
  authority: sender.address,
  amount: 250_000n // 0.25 tokens
});

// Create instruction to add a memo to the transaction
const memoInstruction = getAddMemoInstruction({
  memo: "Payment for services rendered - Invoice #12345"
});

// Prepare and send transaction with both transfer and memo using @solana/client
const signature = await client.transaction.prepareAndSend({
  authority: sender,
  instructions: [transferInstruction, memoInstruction],
  version: 0
});

console.log("\n=== Token Payment with Memo Complete ===");
console.log("Transaction Signature:", signature.toString());

// Fetch final token account balances using @solana/client SPL token helper
const splToken = client.splToken({
  mint: mint.address,
  tokenProgram: "auto"
});

const senderBalance = await splToken.fetchBalance(sender.address);
const recipientBalance = await splToken.fetchBalance(recipient.address);

console.log("\nSender Token Account Balance:", senderBalance);
console.log("Recipient Token Account Balance:", recipientBalance);

// Fetch transaction details to view the memo in the logs
const transaction = await client.runtime.rpc
  .getTransaction(signature, {
    encoding: "jsonParsed",
    maxSupportedTransactionVersion: 0
  })
  .send();

console.log("\nTransaction logs with Memo:");
console.log(transaction?.meta?.logMessages);

// =============================================================================
// Demo Setup Helper Function
// =============================================================================

Console

Click to execute the code.

Demo



// Generate keypairs for sender and recipient
const sender = (await generateKeypair()).signer;
const recipient = (await generateKeypair()).signer;

console.log("Sender Address:", sender.address);
console.log("Recipient Address:", recipient.address);

// Demo Setup: Create client, mint account, token accounts, and fund with initial tokens
const { client, mint } = await demoSetup(sender, recipient);

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

// Derive the Associated Token Accounts addresses (ATAs) for sender and recipient
const [senderAta] = await findAssociatedTokenPda({
  mint: mint.address,
  owner: sender.address,
  tokenProgram: TOKEN_2022_PROGRAM_ADDRESS
});

const [recipientAta] = await findAssociatedTokenPda({
  mint: mint.address,
  owner: recipient.address,
  tokenProgram: TOKEN_2022_PROGRAM_ADDRESS
});

console.log("Sender Token Account:", senderAta.toString());
console.log("Recipient Token Account:", recipientAta.toString());

// =============================================================================
// Token Payment with Memo Demo
// =============================================================================

// Create instruction to transfer tokens from sender to recipient
// Transferring 250,000 base units = 0.25 tokens (with 6 decimals)
const transferInstruction = getTransferInstruction({
  source: senderAta,
  destination: recipientAta,
  authority: sender.address,
  amount: 250_000n // 0.25 tokens
});

// Create instruction to add a memo to the transaction
const memoInstruction = getAddMemoInstruction({
  memo: "Payment for services rendered - Invoice #12345"
});

// Prepare and send transaction with both transfer and memo using @solana/client
const signature = await client.transaction.prepareAndSend({
  authority: sender,
  instructions: [transferInstruction, memoInstruction],
  version: 0
});

console.log("\n=== Token Payment with Memo Complete ===");
console.log("Transaction Signature:", signature.toString());

// Fetch final token account balances using @solana/client SPL token helper
const splToken = client.splToken({
  mint: mint.address,
  tokenProgram: "auto"
});

const senderBalance = await splToken.fetchBalance(sender.address);
const recipientBalance = await splToken.fetchBalance(recipient.address);

console.log("\nSender Token Account Balance:", senderBalance);
console.log("Recipient Token Account Balance:", recipientBalance);

// Fetch transaction details to view the memo in the logs
const transaction = await client.runtime.rpc
  .getTransaction(signature, {
    encoding: "jsonParsed",
    maxSupportedTransactionVersion: 0
  })
  .send();

console.log("\nTransaction logs with Memo:");
console.log(transaction?.meta?.logMessages);

// =============================================================================
// Demo Setup Helper Function
// =============================================================================

Console

Click to execute the code.

Pembayaran dengan memo

Cara kerjanya

Impor program Memo

Buat instruksi transfer

Buat instruksi memo

Kirim transaksi dengan memo

Lihat memo di log transaksi

Impor program Memo

Buat instruksi transfer

Buat instruksi memo

Kirim transaksi dengan memo

Lihat memo di log transaksi

Demo

Daftar Isi