[API reference](https://evolu.dev/docs/api-reference) › [@evolu/common](https://evolu.dev/docs/api-reference/common) › [local‑first/Owner](https://evolu.dev/docs/api-reference/common/local-first/Owner) › OwnerId

```ts
type OwnerId = string &
  import("../Brand.ts").Brand<"Id"> &
  import("../Brand.ts").Brand<"OwnerId">;
```

Defined in: [packages/common/src/local-first/Owner.ts:90](https://github.com/evoluhq/evolu/blob/49ea8ca499566aba270f8cb601e7f49aa62320f8/packages/common/src/local-first/Owner.ts#L90)

OwnerId is a branded [Id](https://evolu.dev/docs/api-reference/common/Type/variables/Id) that uniquely identifies an [Owner](https://evolu.dev/docs/api-reference/common/local-first/Owner/interfaces/Owner).