Production checklist

Finish sandbox testing, then check the items below. See the overview and webhook pages for the rules.

Credentials and environment

• Production appId / appSecret are isolated from test.
• appSecret is only in server-side secret management or controlled env vars.
• Production gateway: https://api.ucashier.ink.

Merchant dashboard

• TRC / ERC receiving addresses and assets are reviewed.
• Pre-funded and payout balances cover fees and planned payouts.

Orders and callbacks

• Every transaction uses a unique merchantOrderNo.
• Show the full payUrl returned by the platform for this order.
• notifyUrl is a publicly reachable URL. Verify the signature first, then handle the business and acknowledge the callback.