appId

Y

Y

string

64

AppId is uniqle for merchant

sign

N

Y

string

256

Sign

merchantOrderNo

Y

Y

string

64

Customer transaction ID, only number

orderAmount

Y

Y

string

64

Order amount (amount unit: dollar)

payCurrency

Y

Y

string

64

Currency of payment
(e.g.: EUR)

userId

Y

Y

string

128

UserId is uniqle for user (email / phone number)

paymentTokens

Y

N

string

128

1. Specify payment token, multiple tokens can be transferred
2. After transfer, users can only use the listed tokens for payment
3. Must be included in the merchant configuration token table
4. Will work on both coin payment and exchange
   Check on supported token list

redirectURL

N

N

string

512

The redirection address after the successful purchase

callbackURL

N

N

string

512

The address receiving order webhook

customParam

N

N

string

512

Merchant custom parameters

expiredTime

N

N

string

32

Time of expire (no more than 172800 second)
Example:if the order expires in 1 hour, please upload 3600.

payType

N

N

string

32

Type of payment
Check on Payment Methods

paymentNetworks

N

N

string

32

Specify payment network(separated by comma)
Check on supported token list

paymentExchange

Y

N

string

512

Exchange Code and Wallet Code
Payment method require configuration exchange method/ wallet method.
Specify the exchange/ wallet, multiple transfers are acceptable. Users can only use the specified exchange/wallet to pay under the exchange payment/wallet payment method by sending this parameter.

orderModel

N

N

string

32

Order mode (ORDER/RECHARGE) capital letter required

ORDER: order mode order would related to order amount strictly, order fails when user payment amount lower than order amount.
RECHARGE: recharge mode order would count as success when received user token.And mark the payment amount as final result.