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.

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

X Layer uses improved zk-SNARK for more compact and cost-effective transactions, and dramatically reduces transaction fees, making it affordable for users to engage with their digital assets. X Layer is Integrated with both OKX exchange and OKX Wallet. With McLaren NFT on X Layer, McLaren fans will be able to connect with over 50 million active crypto-native builders and creators on the X Layer and OKX platform, and have access to the gateway of web3 world.

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.

Historical returns, projected returns, and probability forecasts are for reference only and don't reflect or guarantee future actual performance. AI-related activities may result in the total loss of your invested assets. Terms and conditions apply.

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.

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.

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.

By combining top-notch security with advanced cross-network compatibility and convenient features like fee-free transactions on X Layer, Pay account make it easier than ever to manage your crypto.Do I have to have an OKX exchange account to have a Pay account? Yes, an OKX exchange account and a completion of identity verification are required to create a Pay account.What can I do with my Pay account? Pay your contacts (friends and family) with USDG and USDC in Pay.

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).

The smart contract then holds your ETH and issues an equivalent amount of WETH in return. The process is reversible — you can unwrap WETH back into ETH at any time by sending your WETH back to the smart contract, which will return your original ETH. Then only it can be swapped with other tokens.

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.

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

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.