# Timestamp

Add the current UTC time in the specified format to the record.

## Example

This example shows how to use the Timestamp transformation to add the current UTC time to a record in a specified format.

```json
{
  "operation": "timestamp",
  "arguments": {
    "key": "timestamp_field",
    "format": "rfc3339"
  }
}
```

Given the input record:

```json
{
  "existing_field": "some_value"
}
```

The output record will be:

```json
{
  "existing_field": "some_value",
  "timestamp_field": "2023-04-18T12:34:56Z"
}
```

### Supported Formats

The Timestamp transformation supports the following formats:

- rfc3339: RFC 3339 format (e.g., "2023-04-18T12:34:56Z")
- unix: Unix timestamp in seconds
- unix_milli: Unix timestamp in milliseconds
- unix_nano: Unix timestamp in nanoseconds
- iso8601: ISO 8601 format (e.g., "2023-04-18T12:34:56.000Z")