Callback Examples

Callback schedule

The callback will be attempted on the following schedule:

1, 5, 10, 15, 20, 30, 60, 90, 120, 150, 180, 210, 240 minutes.

So, please keep in mind that the number of callback attempts is limited to 13 and the retries are executed in the predefined manner.

Deposit Callbacks

To provide authentication for the callback, Citron API signs the POST your api key and secret:

1. X-Process-Key – Your public key

2. X-Process-Signature – POST body, signed by your secret key HMAC-SHA512

Time	2023-04-25 12:29:13
Method	POST
Status	200
Format	application/json

Data sent:

{
    "id": 186961,
    "internal_id": 434088,
    "type": "deposit_exchange",
    "crypto_address": {
        "id": 68495,
        "currency": "BTC",
        "address": "bc1qvg...gc9l",
        "tag": null,
        "foreign_id": "test_user1"
    },
    "currency_sent": {
        "currency": "BTC",
        "amount": "0.00367652"
    },
    "currency_received": {
        "currency": "USDTT",
        "amount": "99.146193",
        "amount_minus_fee": "98.154731"
    },
    "transactions": [
        {
            "id": 186961,
            "currency": "BTC",
            "transaction_type": "blockchain",
            "type": "deposit",
            "address": "bc1qvg...9gc9l",
            "tag": null,
            "amount": "0.00367652",
            "txid": "49c4f42b863718d...d8e38af4a6350c91731d",
            "riskscore": null,
            "confirmation": 3,
            "senders": ["TJR8sM1....h9xfX1H17cwP6Ce"]
        }
    ],
    "fees": null,
    "error": "",
    "risk": {},
    "status": "confirmed",
    "exchange": {
        "ticker": "BTCUSDT",
        "rate": "26967.40200000",
        "exchanged_amount": "99.14619280"
    }
}

Response received:

{
    "code": 0
}

"riskscore" is used for coin compliance analysis and to reveal and track malicious behavior. Available for deposits and deposits with exchange in BTC, ETH.

Withdrawal Callback

Time	2023-04-25 12:27:23
Method	POST
Status	200
Format	application/json

Data sent:

{
    "id": 100000,
    "internal_id": 434088,
    "foreign_id": "100:customerid",
    "type": "withdrawal",
    "crypto_address": {
        "id": 100000,
        "currency": "USDTT",
        "address": "TNRZHR...i1as",
        "tag": null
    },
    "currency_sent": {
        "currency": "USDTT",
        "amount": "2996.058802",
        "amount_minus_fee": "3011.039096"
    },
    "currency_received": {
        "currency": "USDTT",
        "amount": "2996.058802"
    },
    "transactions": [
        {
            "id": 100000,
            "currency": "USDTT",
            "transaction_type": "blockchain",
            "type": "withdrawal",
            "address": "TNRZHRGNi6IbTuur7FcuXmXobohnZYiYas",
            "tag": null,
            "amount": "2996.058802",
            "txid": "15e698b4ffdf5463c7e7e31e54i3c95cddaaddc2de4414adca2d8e5b3d84d0f",
            "riskscore": null,
            "confirmations": 111
        }
    ],
    "fees": [
        {
            "type": "mining",
            "currency": "TRX",
            "amount": "27.600900"
        }
    ],
    "error": "",
    "status": "confirmed",
    "network_fee": "16.80594886",
    "network_fee_level": "avg",
    "risk": {
        "is_fraud": false,
        "alerts": [],
        "risk_level": null,
        "resource_name": "Binance.com",
        "resource_category": "exchange"
    }
}

Response received:

{
    "code": 0
}

JSON parameters for the Payment Terminal

A set of parameters is included in URL that will allow to redirect a user to the Payment Terminal.

Name	Description	Required	Type
client_id	This is a unique ID that’s generated on the side of Citron	Required	int
currency	ISO of a currency to receive funds in, example: BTC	Required	string
amount	Amount of funds to withdraw, example: "3500"	Optional	numeric
convert_to	In case you need on-the-fly exchange of all incoming funds (e.g. to EUR) specify this parameter as EUR or any other supported currency ISO, to see the list of available pairs check the method above	Optional	string
is_iframe	The parameter that allows you to get an iframe-link (false by default).	Optional	boolean
foreign_id	Unique foreign ID in your system, example: "164"	Required	string
url_back	A link that allows you to get a user back to your system	Optional	url