On-Chain Withdrawal via Binance pay

Authentication Rule The request must contain an APIKEY header with your API key. The key can be generated in the merchant dashboard under Settings \ API .

All requests must include the following header:

APIKEY: your_api_key_here
Content-Type: application/x-www-form-urlencoded

Creates an on-chain withdrawal request routed through Binance to any external blockchain wallet address. The network fee is deducted from the withdrawal amount.

• Method: POST

• Endpoint: https://app.0xprocessing.com/api/binancepayonchainwithdraw

Request Body (x-www-form-urlencoded)

Parameter	Type	Required	Description
Currency	string	Yes	Currency and network (e.g., USDT (BEP20)) — must match a name from /BinanceOnchainWithdrawCoins.
ClientId	string	Yes	Client identifier in the merchant's system.
ExternalId	string	Yes	Unique transaction ID on the merchant side.
Address	string	Yes	Recipient wallet address.
Amount	number	Yes	Withdrawal amount.

Response Example

{
    "id": 39212667,
    "type": "WithdrawOnchain",
    "destination": "0xaa15959c03bdeb35f8fa345f0055d9954dc806f6",
    "txId": null,
    "amount": 6.0,
    "fee": 0.12,
    "currency": "USDT (BEP20)",
    "date": "2026-06-01T11:32:09.7075739Z",
    "status": "pending",
    "clientId": "1234",
    "externalId": "3",
    "binanceId": null
}

Response Fields

Field	Type	Description
id	integer	Internal withdrawal ID in 0xProcessing.
type	string	Operation type: WithdrawOnchain.
destination	string	Recipient's blockchain wallet address.
txId	string | null	Blockchain TX hash (null while pending).
amount	number	Withdrawal amount.
fee	number	Network fee charged by Binance.
currency	string	Currency and network name.
date	string	Creation timestamp in UTC (ISO format).
status	string	Status of the withdrawal (pending / completed / failed).
clientId	string	Merchant's client ID.
externalId	string	Merchant's external transaction ID.
binanceId	string | null	Binance transaction ID (available after processing).

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Transaction Status Reference

The status field is present in all withdrawal responses.

Status	Description
pending	Request accepted and queued for processing.
completed	Transaction successfully executed.
failed	Transaction failed (e.g. invalid wallet address, insufficient funds).