> For the complete documentation index, see [llms.txt](https://wiki.4thtech.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wiki.4thtech.io/sdk-and-white-label/ethereum/encryptor/isuseraddressinitialized.md).

# isUserAddressInitialized

{% hint style="info" %}
Reference for SDK 0.5.x (maintenance mode). See [Status](/sdk-and-white-label/status.md).
{% endhint %}

Checks if the user address has an associated public key.

### Usage

```ts
const user = '0x...';
const hasPublicKey = await encryptor.isUserAddressInitialized(user);
```

### Returns

`Promise<boolean>`

A promise that resolves to true if the user address has an associated public key, otherwise false.

### Parameters

#### address

* **Type** `Address`

The user's address for which the public key association is being checked.