# E2e.chain.GroupState

The participant list and external permission mask for an [E2E conference call blockchain state](/api/end-to-end/group-calls.md#blockchain-state-management).

<!-- schema -->
```
e2e.chain.groupState#1ddc7584 participants:Vector<e2e.chain.GroupParticipant> external_permissions:int = e2e.chain.GroupState;
```
<!-- /schema -->

### Constructors

| Constructor | Description |
| --- | --- |
| [e2e.chain.groupState](/constructor/e2e.chain.groupState.md) | The participant list and external permission mask for an [E2E conference call blockchain state »](/api/end-to-end/group-calls.md#participants-and-permissions). |

### Related pages

#### [E2E Group Calls](/api/end-to-end/group-calls.md)
End-to-end encryption used for Telegram group voice and video calls, using a blockchain for state management.