August 18, 2025, 2:00 PM (UTC+8) The OKB smart contract will be upgraded to remove minting and burning functions.FAQWhat's X Layer? X Layer is a public blockchain, decentralized public blockchain launched by OKX. It isn't a sub-chain or dedicated chain of the OKX exchange. Anyone can deploy projects on X Layer. OKX doesn't endorse, guarantee, or take responsibility for any third-party projects deployed on X Layer. Using decentralized public blockchain projects involves risks.

Once the identity verification is done, return to the homepage and set up your passkey. Learn more here.4. How do I make a payment on Pay?

Bundle verification: if you choose to transact on a Layer 2 network (such as Optimism, Base, or Arbitrum One), the transaction will be verified on Layer 2 and then bundled with other transactions as a single bundle for verification on Layer 1.

Why use X Layer for on-chain deposits? X Layer carries zero gas fees for these assets. Other networks (such as Ethereum or Tron) may charge gas fees. Need more help? Contact Support

This wallet keeps you in control by requiring your approval for every transaction, adding an extra layer of security. It also allows you to seamlessly send and receive USDG, USDC, and USDT across the X Layer network. Sending via X Layer incurs no additional fee. To enhance security, Pay incorporates advanced technologies such as passkeys, multi-signature authorization, and ZK Email recovery, ensuring you retain full control over your funds.

If you choose USDT on the X Layer network and the other platform or wallet does not support the X Layer network, you cannot use the USDT deposit address from other networks. Even if the crypto is the same, USDT, a network mismatch will result in withdrawal failures. Solution: Once your withdrawal status is marked as "Withdrawing" or "Transferred Out," you cannot cancel the withdrawal on the platform. The assets have already left the OKX platform.

Passkey Based Authentication Use your hardware security key to verify your identity during logins and key actions—such as withdrawals—offering an extra layer of security against unauthorized access.

Only X Layer is supported currently via this functionality.How long will it take for my assets to appear in my Pay balance? It typically takes a few seconds for transfer to be processed. We'll send an email and push notification once it's completed.Can I cancel the transaction after submitting it? No, users aren't allowed to cancel after submission. Users can transfer their balance from pay balance back to exchange if required. If you want to learn more about Pay, visit here.

Enabling trade confirmations provides an added layer of control and mindfulness to your trading process. This feature prompts you to review your trade details before execution, ensuring that every decision aligns with your trading strategy and goals. It's particularly beneficial for beginners who are still gaining confidence in their trading skills or for experienced traders who want to minimize the chances of making impulsive decisions during volatile market conditions.

What is an ACH return or ACH payment due? An ACH return occurs when a deposit from your bank to your OKX account is reversed because it could not be completed. This can happen for several reasons, such as insufficient funds in your bank account, an incorrect account number, or your bank blocking the transaction. When this occurs, OKX requires you to pay back the outstanding balance.

A deposit which has been received in excess of your remaining limit will be returned to your bank and this may result in additional charges from your bank. We may also charge you a fee to return the deposit to your bank.5. What happens if I send an amount which is below the minimum limit? A deposit which has been received below the minimum limit will be returned to your bank and this may result in additional charges from your bank.

The recursive circuit takes 64 different proofs (π0, ..., π63), hashes (h0, ..., h63), equities (e0, ..., e63), and debts (d0, ..., d63) from the lower-layer circuits as inputs. It combines these inputs and produces 3 outputs: a new hash (hrecursive), total equity (erecursive), and total debt (drecursive).

Return-Path / smtp.mailfrom (server-observed sender) Return-path is the address used by the email server to send the message. It is more reliable than what you see from "From" but may also be spoofed. Return-path is the address used by the email server If this domain differs from the "From" address, it is a major warning sign.3. Authentication Results This section shows whether SPF, DKIM, and DMARC validations passed.

The return of funds depends entirely on the recipient’s cooperation. If the user agrees, we’ll facilitate communication and the return process. If the recipient doesn’t respond or refuses, we can’t forcefully retrieve the funds.How do I avoid this in the future? Always double-check the UID or withdrawal address before confirming a transfer. Consider using the Address Book feature in your OKX account to save frequently used addresses safely.

result The balance of all addresses is displayed based on the returned result 3.