# wallet.proofChallenge

> wallet.proofChallenge attributes, type and example

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### Attributes:

| Name     |    Type       | Required |
|----------|---------------|----------|
|payload|[string](/API_docs/types/string.html) | Yes|
|expires|[int](/API_docs/types/int.html) | Yes|
|domain|[string](/API_docs/types/string.html) | Yes|



### Type: [wallet.ProofChallenge](/API_docs/types/wallet.ProofChallenge.html)


### Example:

```
$wallet_proofChallenge = ['_' => 'wallet.proofChallenge', 'payload' => 'string', 'expires' => int, 'domain' => 'string'];
```