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

```ts
function nodeIdToNodeIdBytes(
  nodeId: string & Brand<"NodeId">,
): Uint8Array<ArrayBufferLike> & Brand<"Length8"> & Brand<"NodeIdBytes">;
```

Defined in: [packages/common/src/local-first/Timestamp.ts:346](https://github.com/evoluhq/evolu/blob/f082fdd974e25fa0eb1134e4b34f15b740af8fe2/packages/common/src/local-first/Timestamp.ts#L346)

Converts [NodeId](https://evolu.dev/docs/api-reference/common/local-first/Timestamp/variables/NodeId) to [NodeIdBytes](https://evolu.dev/docs/api-reference/common/local-first/Timestamp/variables/NodeIdBytes).