A standalone mock merchant. It integrates the platform's ~10-line SDK and hosts the merchant backend (webhook receiver + cashout-confirm). It is not part of the wallet platform.
The player logs in inside the popup (hosted by the platform). For a smoother test, log into the wallet first so the popup reuses the session:
Merchant … · player reference (username on the betting site):
The player's balance on the betting site. Deposits credit it; cashouts deduct it. Add/deduct to simulate bets won/lost.
Balance for …: … USDT
Signed webhooks and the cashout-confirm call the platform sent to this merchant backend.