[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) › createOwnerWriteKey

```ts
function createOwnerWriteKey(
  deps: RandomBytesDep,
): Uint8Array<ArrayBufferLike> &
  Brand<"Entropy"> &
  Brand<"Length16"> &
  Brand<"OwnerWriteKey">;
```

Defined in: [packages/common/src/local-first/Owner.ts:162](https://github.com/evoluhq/evolu/blob/037c390af081e9944d616ff298a729515c5c5ab7/packages/common/src/local-first/Owner.ts#L162)

Creates a random [OwnerWriteKey](https://evolu.dev/docs/api-reference/common/local-first/Owner/variables/OwnerWriteKey) for rotating write access.