# CommitOptions

Defined in: [packages/synapse-sdk/src/types.ts:497](https://github.com/FilOzone/synapse-sdk/blob/83770aa3b42e40c80326c80cbbbd1c1206c920c0/packages/synapse-sdk/src/types.ts#L497)

Options for committing pieces on-chain

## Properties

### extraData?

> `optional` **extraData**: `` `0x${string}` ``

Defined in: [packages/synapse-sdk/src/types.ts:501](https://github.com/FilOzone/synapse-sdk/blob/83770aa3b42e40c80326c80cbbbd1c1206c920c0/packages/synapse-sdk/src/types.ts#L501)

Pre-built signed extraData (avoids re-signing)

***

### onSubmitted()?

> `optional` **onSubmitted**: (`txHash`) => `void`

Defined in: [packages/synapse-sdk/src/types.ts:503](https://github.com/FilOzone/synapse-sdk/blob/83770aa3b42e40c80326c80cbbbd1c1206c920c0/packages/synapse-sdk/src/types.ts#L503)

Called when the commit transaction is submitted (before on-chain confirmation)

#### Parameters

| Parameter | Type |
| ------ | ------ |
| `txHash` | `` `0x${string}` `` |

#### Returns

`void`

***

### pieces

> **pieces**: `object`[]

Defined in: [packages/synapse-sdk/src/types.ts:499](https://github.com/FilOzone/synapse-sdk/blob/83770aa3b42e40c80326c80cbbbd1c1206c920c0/packages/synapse-sdk/src/types.ts#L499)

Pieces to commit with optional per-piece metadata

#### pieceCid

> **pieceCid**: `PieceLink`

#### pieceMetadata?

> `optional` **pieceMetadata**: [`MetadataObject`](/reference/filoz/synapse-sdk/synapse/type-aliases/metadataobject/)