# Payment

### **Arguments**

* **asset** `string` *optional*\
  Hash of unit where the asset was defined.
* **outputs** `array` *required*\
  Outputs is an array of outputs that say who receives the money.
  * **address** `string` *required* \
    The Byteball address of the recipient.
  * **amount** `integrer` *required* \
    The amount he receives.

### Returns

Returns the unit hash.

### Examples

#### Spend bytes

```javascript
const params = {
  outputs: [
    { address: 'NX2BTV43XN6BOTCYZUUFU6TK7DVOC4LU', amount: 1000 }
  ]
};

client.post.payment(params, wif, function(err, result) {
  console.log(result);
});
```

#### Send bytes to multiple recipients

```javascript
const params = {
  outputs: [
    { address: 'NX2BTV43XN6BOTCYZUUFU6TK7DVOC4LU', amount: 1000 },
    { address: 'ULQA63NGEZACP4N7ZMBUBISH6ZTCUS2Q', amount: 2000 }
  ]
};

client.post.payment(params, wif, function(err, result) {
  console.log(result);
});
```

#### Spend asset

```javascript
const params = {
  asset: 'Hh22Wmd+xAYhgjCBACAxKXWErh/zJuwGc2w2DCB9H24=',
  outputs: [
    { address: 'NX2BTV43XN6BOTCYZUUFU6TK7DVOC4LU', amount: 500 }
  ]
};

client.post.payment(params, wif, function(err, result) {
  console.log(result);
});
```

### **Learn more**

* "12. Unit structure" (page 15) <https://obyte.org/Byteball.pdf>


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