[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
type IdBytes = Uint8Array<ArrayBufferLike> &
  Brand<"Length16"> &
  Brand<"IdBytes">;
```

Defined in: [packages/common/src/Type.ts:1916](https://github.com/evoluhq/evolu/blob/e7144e2bbe9069362b62dec1b64a8aa922b8f1b0/packages/common/src/Type.ts#L1916)

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