# Create a Channel

First of all, let’s [create a channel](https://reference.cryptopay.me/#tag/Channels/operation/channels.create) for our customer:

```
curl -X POST \
https://business-sandbox.cryptopay.me/api/channels \
-H 'Authorization: HMAC ***' \
-H 'Content-Type: application/json' \
-H 'Date: Tue, 19 Mar 2019 10:11:40 GMT' \
-d '{"pay_currency":"BTC", "network":"bitcoin", "receiver_currency":"EUR", "name":"channel name", "custom_id":"631044494"}'
```

Let’s go over the parameters we used in the request above: 

* `pay_currency` - is a cryptocurrency in which the customer will make a payment (in our case it is `BTC`)
* `network` - the blockchain in which the address is going to be created. The list of available networks can be found [here](https://developers.cryptopay.me/guides/currencies/currencies).
* `receiver_currency` - the currency to which incoming cryptocurrency transactions will be converted and in which the merchant will be credited to the balance account (in our case it is `EUR`)
* `name` - any channel name
* `custom_id` - we recommend indicating a certain reference by which you associate your customer with the created channel. It is important to note that all channel payments of this channel will be inherited by the parent channel - for example, `631044494`

You will receive the channel’s address and a link to its [hosted page](https://developers.cryptopay.me/guides/channels/channel-hosted-page), which can be integrated into your website:

```javascript
{
  "customer_id": "e7bb04fb-7f33-4729-819e-05a92761b492",
  "id": "50eb5775-f77e-4c64-870b-dc93624b5967",
  "name": "channel name",
  "description": "channel description",
  "receiver_currency": "EUR",
  "pay_currency": "BTC",
  "address": "2N9uVK2MDFNgBVqPnvCTV66Dinx3cp5J7S4",
  "network": "bitcoin",
  "project_id": "25632c89-7f40-4693-8ed0-99bf5f79d3a6",
  "custom_id": "631044494",
  "uri": "bitcoin:2N9uVK2MDFNgBVqPnvCTV66Dinx3cp5J7S4",
  "hosted_page_url": "https://business-hosted.cryptopay.me/channels/50eb5775-f77e-4c64-870b-dc93624b5967"
}
```

To create a channel payment, we need to send a BTC transaction to the Bitcoin address of our newly created channel `2N9uVK2MDFNgBVqPnvCTV66Dinx3cp5J7S4`. In order to send the transaction, please login to your test account and press the "Send" button, which is located on your Bitcoin account:

<figure><img src="https://files.cryptopay.me/b2b/git_book_files/04_Channel_Create_a_Channel.webp" alt=""><figcaption></figcaption></figure>

In the pop-up window, enter the address and amount of the transaction, and complete the process.&#x20;

{% hint style="info" %}
You can also automate the process of sending transactions using [this endpoint](https://reference.cryptopay.me/#tag/Coin-withdrawals/operation/coin-withdrawals.create) so that you do not have to create payments manually.
{% endhint %}

Once the payment is sent, we will create a Channel Payment transaction in your account and send the [callbacks](https://developers.cryptopay.me/guides/api-basics/callbacks) to the Callback URL. We also recommend you using [this endpoint](https://reference.cryptopay.me/#tag/Channels/operation/channels.retrieve-payment) to check the channel payment status before depositing funds to your customer's balance, as  delivery of the callbacks is not guaranteed.

Below is an example of a callback for the final status `completed`:

```javascript
{
  "type": "ChannelPayment",
  "event": "completed",
  "data": {
    "id": "284d4b79-fea6-46ce-bc2f-0f9cbed6367e",
    "txid": "09723bf75253f3d2bf2f150fd8b5da5bc3026b95f1fe50b1f5f76f43d67a2e30",
    "address": "2N9uVK2MDFNgBVqPnvCTV66Dinx3cp5J7S4",
    "network": "bitcoin",
    "paid_amount": "0.02",
    "paid_currency": "BTC",
    "received_amount": "97.26",
    "received_currency": "EUR",
    "fee": "0.99",
    "fee_currency": "EUR",
    "exchange": {
      "pair": "BTCEUR",
      "rate": "4912.8021"
    },
    "status": "completed",
    "channel_id": "50eb5775-f77e-4c64-870b-dc93624b5967",
    "custom_id": "631044494",
    "risk": {
      "score": 0,
      "level": "low",
      "resource_name": "Bitstamp",
      "resource_category": "Exchange"
    },
    "hosted_page_url": "https://business-hosted.cryptopay.me/channels/50eb5775-f77e-4c64-870b-dc93624b5967",
    "created_at": "2019-05-02T11:00:01+00:00"
  }
}
```

It is important to note that `paid_amount` == `received_amount` + `fee`. It means that the full amount of the payment made by the customer consists of the `received_amount` and the `fee`, where the `received_amount` is the amount of the merchant balance credited to Cryptopay and the `fee` is the amount of the processing fee charged by Cryptopay.