Deposits & withdrawals

How to integrate DREMT as a Solana Token-2022 asset in exchange wallet infrastructure.

DREMT is a plain Token-2022 mint with no extensions. If your Solana stack already supports Token-2022 (for example PYUSD), DREMT needs no special handling beyond the program ID.

Parameters

Parameter	Value
Mint	AmUYmDAhxoD841aT44dNLVHRvnZ1zGe1uppZLFw5MSou
Token program	TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb
Decimals	6 (1 DREMT = 1,000,000 base units)
Transfer fee	None
Transfer hook	None
Memo required	No
Gas token	SOL. The sender pays the fee. Creating a new recipient ATA costs about 0.00207 SOL in rent
Recommended confirmation	finalized commitment, about 13 s

Deposit addresses

A user's deposit address is the Associated Token Account (ATA) of their wallet, derived with the Token-2022 program ID. Deriving it with the legacy SPL Token program gives a different, wrong address.

import { PublicKey } from "@solana/web3.js";
import { getAssociatedTokenAddressSync, TOKEN_2022_PROGRAM_ID } from "@solana/spl-token";

const DREMT = new PublicKey("AmUYmDAhxoD841aT44dNLVHRvnZ1zGe1uppZLFw5MSou");

const ata = getAssociatedTokenAddressSync(DREMT, owner, false, TOKEN_2022_PROGRAM_ID);

TIP

Show users their wallet address (owner) as the deposit address, the same way you do for other SPL tokens. Wallets resolve the ATA on their own. Credit deposits that arrive at the derived ATA.

Withdrawals

Use transferChecked. It checks the mint and decimals, and it is what Token-2022 integrations should use. Create the recipient's ATA idempotently in the same transaction.

import { Transaction } from "@solana/web3.js";
import {
  createAssociatedTokenAccountIdempotentInstruction,
  createTransferCheckedInstruction,
  getAssociatedTokenAddressSync,
  TOKEN_2022_PROGRAM_ID,
} from "@solana/spl-token";

const from = getAssociatedTokenAddressSync(DREMT, hotWallet.publicKey, false, TOKEN_2022_PROGRAM_ID);
const to = getAssociatedTokenAddressSync(DREMT, recipient, true, TOKEN_2022_PROGRAM_ID);

const tx = new Transaction().add(
  createAssociatedTokenAccountIdempotentInstruction(
    hotWallet.publicKey, to, recipient, DREMT, TOKEN_2022_PROGRAM_ID,
  ),
  createTransferCheckedInstruction(
    from, DREMT, to, hotWallet.publicKey, amountBaseUnits, 6, [], TOKEN_2022_PROGRAM_ID,
  ),
);

Detecting deposits

Poll each deposit ATA, or subscribe to it, then read the token balance change from the finalized transaction. Only credit entries where mint equals the DREMT mint.

const sigs = await connection.getSignaturesForAddress(ata, { limit: 100 }, "finalized");

for (const { signature, err } of sigs) {
  if (err) continue; // failed tx, nothing moved
  const tx = await connection.getParsedTransaction(signature, {
    commitment: "finalized",
    maxSupportedTransactionVersion: 0,
  });
  const pre = tx?.meta?.preTokenBalances?.find(b => b.mint === DREMT.toBase58() && b.owner === owner.toBase58());
  const post = tx?.meta?.postTokenBalances?.find(b => b.mint === DREMT.toBase58() && b.owner === owner.toBase58());
  const delta = BigInt(post?.uiTokenAmount.amount ?? 0) - BigInt(pre?.uiTokenAmount.amount ?? 0);
  if (delta > 0n) credit(signature, delta); // make credit() idempotent on signature
}

WARNING

Never credit from confirmed or processed commitment. Always de-duplicate by transaction signature.

Things that cannot happen to your wallets

• Frozen accounts: the current token program has no freeze instruction. Adding one would need a 3-of-5 program upgrade. See Governance.
• Transfer fees withheld: the mint has no fee extension, so the amount sent is the amount received.
• Blocked transfers: the mint has no transfer hook, so the program's pause and blacklist do not apply to regular transfers. See Governance.

Testing

There is no devnet DREMT mint for exchanges. Test with a small mainnet amount. Contact support@dremt.io if you need test tokens sent to your hot wallet.