[API reference](https://evolu.dev/docs/api-reference) › [@evolu/common](https://evolu.dev/docs/api-reference/common) › [Type](https://evolu.dev/docs/api-reference/common/Type) › IdBytes

```ts
const IdBytes: brand(
  "IdBytes",
  length(16)(Uint8Array),
);
```

Defined in: [packages/common/src/Type.ts:6143](https://github.com/evoluhq/evolu/blob/037c390af081e9944d616ff298a729515c5c5ab7/packages/common/src/Type.ts#L6143)

Binary representation of an [Id](https://evolu.dev/docs/api-reference/common/Type/variables/Id).