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Transferring cryptocurrency from one exchange to another can seem complex, especially when different blockchain networks are involved. If you need to move funds from the Binance Chain (BNB) to the OKX exchange, it is crucial to follow the correct steps to avoid losing your assets. This guide will walk you through the process of depositing BNB or other Binance Chain tokens into your OKX account safely and efficiently.

First, you must understand the terminology. “Binance Chain” often refers to the BNB Beacon Chain (BEP-2) or the BNB Smart Chain (BEP-20). For most users depositing to OKX, the BNB Smart Chain (BEP-20) is the most common and cost-effective network. Before you begin, ensure you have a funded Binance or Trust Wallet account and an active OKX account.

Step 1: Locate Your OKX Deposit Address for BNB
Log in to your OKX account. Navigate to “Assets” and select “Deposit.” In the search bar, type “BNB.” A critical step appears here: you must select the correct network. Choose “BNB Smart Chain (BEP-20)” from the dropdown menu. Do not select BEP-2 or other networks unless you specifically intend to use them. OKX will generate a unique deposit address and a required “Memo” or “Tag.” Copy both the deposit address and the Memo carefully. The Memo is essential for the transaction to be credited to your account.

Step 2: Initiate the Withdrawal from Your Binance Wallet
Go to your Binance spot wallet or your external wallet (like Trust Wallet or MetaMask configured for BSC). Click “Withdraw.” Paste the OKX deposit address into the recipient field. Select the network as “BSC” or “BEP-20.” Ensure the network matches exactly what you selected on OKX. Enter the amount of BNB you wish to transfer. Double-check the withdrawal fee displayed by Binance.

Step 3: Enter the Memo/Tag (Crucial for OKX)
This is the most common mistake users make. When withdrawing from Binance to OKX using the BEP-20 network, you must enter the “Memo” or “Tag” that OKX provided. If you skip this or enter the wrong Memo, your funds may be lost or require a lengthy manual recovery process by OKX support. Paste the Memo (an alphanumeric string) into the designated “Memo” field on the Binance withdrawal page.

Step 4: Confirm and Wait for Network Confirmation
Review all details: the network (BSC/BEP-20), the receiving address, the Memo, and the amount. Submit the withdrawal request. Binance may require email or 2FA verification. Once submitted, the transaction will be processed. You can track its progress on BscScan.com using the transaction ID. BNB Smart Chain transfers typically confirm in 1-5 minutes. Once the transaction has enough confirmations, the funds will automatically appear in your OKX wallet.

Common Pitfalls to Avoid
Never send a token on the wrong network. For example, sending ERC-20 tokens to a BEP-20 address will likely result in permanent loss. Always use the BEP-20 network for BNB transfers to OKX unless your OKX deposit page specifically shows support for another network. Additionally, always test with a small amount first if you are a first-time user. This confirms the address and Memo are correct without risking a large balance.

Why This Method Works
Using the BNB Smart Chain (BEP-20) for deposits is highly efficient due to low fees and fast block times. OKX supports this network natively, making the deposit seamless when the correct Memo is included. By following these steps precisely, you can securely move your BNB from a Binance Chain wallet to your OKX trading account in just a few minutes.