Specifying the transaction amount

Table of accuracy of amounts [/amount]

The table below shows the recommended number of decimal places in the amount and shop_amount parameters when creating operations.

Blockchain	Currency	Payway	Decimal places
Bitcoin	BTC	btc_btc	8
Litecoin	LTC	ltc_ltc	8
Polygon	MATIC	matic_polygon	18
Polygon	USDT	usdt_polygon	6
Polygon	BUSD	busd_polygon	18
TRON	TRX	trx_trc20	6
TRON	USDT	usdt_trc20	6
Ethereum	ETH	eth_erc20	18
Ethereum	USDT	usdt_erc20	6
Binance Smart Chain	BNB	bnb_bep20	18
Binance Smart Chain	USDT	usdt_bep20	18

Attention! Not all decimal numbers can be accurately represented using binary notation. It is recommended to use decimal data types (for example: decimal.Decimal type in Python) to work with amounts.

If you specify the amount parameter with more decimal places than supported — the Qostiq system will return in response the rounded value of the receive/write-off amount.

Example request with rounded amount:

{
    "amount": 0.100000889,
    "amount_type": "ps_amount",
    "payway": "usdt_erc20",
    "shop_currency": "USDT",
    "shop_id": 6,
    "now": 1659081383,
    "sign": "e60d8f25564f7191cc170557a34102228307b0b267eeba7ee0cc5732bbb2f235"
}

Example response:

{
    "data": {
        "payee_currency": "USDT",
        "payee_receive": "0.100001",
        "shop_currency": "USDT",
        "shop_write_off": "0.10300103"
    },
    "error_code": 0,
    "message": "Ok",
    "result": true
}