# SnapshotId

`import { SnapshotId } from "destack:runtime";`

Serialized snapshot identifier.

```ds title="SnapshotId"
export newtype SnapshotId = uint64
```

[language/library/src/runtime/snapshot.ds:8](https://github.com/destack-sh/destack/blob/main/language/library/src/runtime/snapshot.ds#L8)