---
title: timestamp
framework: storekit
role: symbol
role_heading: Instance Property
path: storekit/skpaymentdiscount/timestamp
---

# timestamp

The date and time of the signature’s creation in milliseconds, formatted in Unix epoch time.

## Declaration

```swift
@NSCopying var timestamp: NSNumber { get }
```

## Discussion

Discussion The timestamp keeps the payment discount active for 24 hours.

## See Also

### Validating the Discount

- [nonce](storekit/skpaymentdiscount/nonce.md)
- [signature](storekit/skpaymentdiscount/signature.md)