# keyCommitmentOf

> **keyCommitmentOf**(`key`): `` `0x${string}` ``

Defined in: [claims.ts:118](https://github.com/FilOzone/synapse-sdk/blob/a3c661408bf8b3cb47684059a425c07b9ae50a64/packages/keysmith/src/claims.ts#L118)

A key's commitment as the 16 bytes a claim carries.

## Parameters

| Parameter | Type |
| ------ | ------ |
| `key` | [`Uint8Array`](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Uint8Array) |

## Returns

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