![](https://btcadd.io/wp-content/uploads/2022/09/Dizajn-bez-nazvaniya-23.png)
The scheme for buying cryptocurrencies for fiat looks like this: enter USD on the Quan2um exchange using the KiberPay service — buy USDT — buy Bitcoin — buy Bitcoin Additional at a rate of 1 to 1. To perform these actions, you do not need to enter additional links in the browser — the exchange interface will tell you everything, just click on the buttons 🙂
Open a personal account on the Quantum exchange. If you don’t have one, register. In the card under your name, select Tether and click «Top up».
![](https://btcadd.io/wp-content/uploads/2022/09/Snimok-ekrana-2022-09-29-v-10.33.41-1024x640.png)
In the «Replenishment» window, click «Fiat», in the «Payment method» section, select KiberPay and enter the required amount in the card on the right. Minimum: 0.1 USD, however, for further purchase of Tether (USDT) you will need from 10 USD. Click «Next».
![](https://btcadd.io/wp-content/uploads/2022/09/Snimok-ekrana-2022-09-29-v-10.36.25-1024x640.png)
You will be taken to the replenishment page from KiberPay, where you can choose a convenient method of purchase: transfer by card number or phone number (SBP).
![](https://btcadd.io/wp-content/uploads/2022/09/Snimok-ekrana-2022-09-28-v-14.34.05-1024x640.png)
You will have 5 minutes to make the transfer, but the time can be extended. When transferring via the Fast Payment System (SBP), you do not need to enter card details — just send the exact amount by phone number in the bank’s mobile application.
![](https://btcadd.io/wp-content/uploads/2022/09/Snimok-ekrana-2022-09-28-v-14.36.57-1024x640.png)
After the payment, you will see the transfer status. The money will arrive within a few minutes. Click the «Return to your personal account» button to be on the exchange and see the accrued funds.
![](https://btcadd.io/wp-content/uploads/2022/09/Snimok-ekrana-2022-09-28-v-14.37.22-1024x640.png)
It remains to open a «Market» on the Quna2um exchange and find a trading pair of USDT / USD. After buying USDT, buy BItcoin in the BTC / USDT pair, and then — Bitcoin Additional coins in the BTCA / BTC pair.