# keyspaceId

> **keyspaceId**(`keyspace`): `` `0x${string}` ``

Defined in: [derive.ts:95](https://github.com/FilOzone/synapse-sdk/blob/c853ca3d1b2e90933e6b15131bfa14059bc48fc7/packages/keysmith/src/derive.ts#L95)

Canonical form of a keyspace identifier: 16 bytes of hex, lowercase, prefixed with `0x`.

## Parameters

| Parameter | Type |
| ------ | ------ |
| `keyspace` | `string` |

## Returns

`` `0x${string}` ``

## Throws

If it is not 16 bytes of hex.