appId

Y

string

Unique identifier assigned by Alchemy Pay.
You can find it in the merchant backend

timestamp

Y

string

Thirteen-digit timestamp

merchantOrderNo

Y

string

The merchantOrderNo cannot be duplicated.
Merchant Order Number (max 48 characters)
This parameter will carry in the webhook, allowing to track order.

sign

Y

string

Sign rules.
URL encoding is required when concatenating to the request URL.

fiat

N

string

The fiat currency to be paid by the user (must be in uppercase)，You can check the list of fiat currencies supported by Alchemy PayClick Here
If passed, the user will not be able to change the fiat currency

fiatAmount

N

string

The fiat currency amount that the user needs to pay

• If passed, the user will not be able to modify the order amount.
  When passing fiatAmount, it is necessary to simultaneously
  include the fiat parameter; otherwise, it will be meaningless.*

crypto

N

string

The cryptocurrency that the user wants to purchase. You can check
the supported cryptocurrencies by Alchemy Pay Click Here.

• If passed, the user will not be able to change the cryptocurrencies.
  'crypto' and 'network' must match; if they don't match, the parameter will not take effect.**

network

N

string

The cryptocurrency network that the user is allowed to use. It is recommended to pass 'network' and 'crypto' together to accurately limit the cryptocurrency the user can purchase. You can check the supported networks by Alchemy Pay Click Here.

• If passed, the user will not be able to change the network.
  'crypto' and 'network' must match; if they don't match, the parameter will not take effect.*

address

N

string

The wallet address where the user wants to receive the cryptocurrency. If passed, the user will not be able to change the wallet address.
The 'address' must match the 'network'; otherwise, the passed parameter will not take effect.
Additionally, when passing 'address', make sure it is an address owned by the user.

memo

N

string

Note: some networks require the memo field to be uploaded. Please refer Click Here

email

N

string

The user's email. If you pass this parameter, we will automatically
pre-fill the email. However, the user still needs to enter an email verification code to verify the email.

token

N

string

If you have already verified the user's email and want to skip the email verification process in AlchemyPay's experience, you can pass this parameter. Refer to this link for the token generation rules.Click Here
If the token parameter is uploaded, the email parameter does not need to be uploaded.

language

N

string

The language of the ramp page opened by the user.
Spanish: es
Traditional Chinese:zh-HK
English:en-US
Vietnamese:vi
Indonesian:id
eg：language=en-US

showTable

N

string

If you want to display only the on-ramp options on the ramp page, you can pass this parameter. Use 'showTable=buy'.

redirectUrl

N

string

The URL of the web page where the user will be redirected after a successful/failed purchase.URL encoding is required when concatenating to the request URL.

callbackUrl

N

string

After a successful/failed purchase, Alchemy Pay will notify you of the payment result at this address. Refer to this link for the specific notification content.Click Here.URL encoding is required when concatenating to the request URL.

merchantName

N

string

When merchants pass this custom name, the merchant name displayed on the order completion page will be shown according to this parameter.

displayAddress

N

string

Fixed: true
If the address parameter is uploaded along with this parameter, it will redirect to the "Confirm wallet address page".