⚡ Quick summary (TL;DR)
Send USDT from OKX to MPChat: match networks exactly, double-check the address, wait for on-chain confirmation.
Keep egress region, billing address, and card details aligned; leave a balance buffer; do not rapid-retry payments.
This guide is for MPChat Pay & MPCard (Cloud / Boundless).
📖 Overview
You have bought USDT on Ouyi. This article teaches you how to "withdraw coins" to MPChat Pay for card opening and consumption. Haven’t bought USDT yet? Please read the "Guide to Buying USDT through OKX" first.
The Asset page has two tabs: Pay and Web3. Card opening, deposits, card spending, and transfers out use Pay balance only; assets in the Web3 tab are not used for cards.
Core principles
"Recharge MPChat" = Make a withdrawal (Withdraw) on the Ouiyi side, and transfer USDT from Ouiyi to the payment address given to you by MPChat.
Ouyi Fund Account──(Blockchain Network)──▶MPChat Recharge Address
⚠️ The network and payment address must be completely consistent with MPChat, otherwise the assets may be lost and cannot be retrieved.
Step 1: Get the recharge address on MPChat
Open MPChat → "Asset" → "Pay" → "Deposit".
Choose USDT and a network (Tron (TRC20), BNB Smart Chain (BEP20), or Ethereum (ERC20)).
Copy the recharge address (or save the QR code).
Step 2: Initiate a currency withdrawal on Ouyi
Open OuYi → "Assets" → Find USDT → "Withdraw" → Select "Withdraw on the chain".
Coin withdrawal address: Paste the payment address of MPChat and check again after pasting.
Network: Select the same network as the Pay deposit page.
The minimum on-chain deposit is 15 USDT. If the amount actually received after the sending platform's withdrawal/network fees is below 10 USDT, HashKey cannot credit it and will not return it, even if the amount entered when sending was 15 USDT. This applies to USDT on Tron (TRC20), BNB Smart Chain (BEP20) and Ethereum (ERC20). Match the network selected in MPChat and check the net received amount before sending.
Submit after completing security verification.
⚠️ Ouyi may have security verification or a short delay for "new address", which is normal risk control.
Step 3: Wait for payment to arrive
Check the progress in OuYi's "Withdrawal Record".
It usually takes a few minutes to arrive in the account, and you can check the balance in MPChat Pay after it arrives.
❓ FAQ
Does Ouyitcoin require an address whitelist?
Depends on your account security settings. If the whitelist is enabled, you need to add the MPChat address to the whitelist first.
Is it normal for the amount to be slightly less after arrival?
Normal, it is USDT→USD conversion difference.
📚 Related articles
💬 Still having trouble?
Do not retry payments rapidly (risk systems may cool you down). Screenshot the error (mask card number & CVV), then tap the message icon in MPChat for 1:1 support.
Need an MPCard? Apply inside the MPChat App — a virtual card is usually ready in about a minute.