# PieceStatus

Defined in: [packages/synapse-sdk/src/types.ts:615](https://github.com/FilOzone/synapse-sdk/blob/83770aa3b42e40c80326c80cbbbd1c1206c920c0/packages/synapse-sdk/src/types.ts#L615)

Status information for a piece stored on a provider
Note: Proofs are submitted for entire data sets, not individual pieces.
The timing information reflects the data set's status.

## Properties

### dataSetLastProven

> **dataSetLastProven**: [`Date`](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date) \| `null`

Defined in: [packages/synapse-sdk/src/types.ts:619](https://github.com/FilOzone/synapse-sdk/blob/83770aa3b42e40c80326c80cbbbd1c1206c920c0/packages/synapse-sdk/src/types.ts#L619)

When the data set containing this piece was last proven on-chain (null if never proven or not yet due)

***

### dataSetNextProofDue

> **dataSetNextProofDue**: [`Date`](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date) \| `null`

Defined in: [packages/synapse-sdk/src/types.ts:621](https://github.com/FilOzone/synapse-sdk/blob/83770aa3b42e40c80326c80cbbbd1c1206c920c0/packages/synapse-sdk/src/types.ts#L621)

When the next proof is due for the data set containing this piece (end of challenge window)

***

### exists

> **exists**: `boolean`

Defined in: [packages/synapse-sdk/src/types.ts:617](https://github.com/FilOzone/synapse-sdk/blob/83770aa3b42e40c80326c80cbbbd1c1206c920c0/packages/synapse-sdk/src/types.ts#L617)

Whether the piece exists on the service provider

***

### hoursUntilChallengeWindow?

> `optional` **hoursUntilChallengeWindow**: `number`

Defined in: [packages/synapse-sdk/src/types.ts:629](https://github.com/FilOzone/synapse-sdk/blob/83770aa3b42e40c80326c80cbbbd1c1206c920c0/packages/synapse-sdk/src/types.ts#L629)

Time until the data set enters the challenge window (in hours)

***

### inChallengeWindow?

> `optional` **inChallengeWindow**: `boolean`

Defined in: [packages/synapse-sdk/src/types.ts:627](https://github.com/FilOzone/synapse-sdk/blob/83770aa3b42e40c80326c80cbbbd1c1206c920c0/packages/synapse-sdk/src/types.ts#L627)

Whether the data set is currently in a challenge window

***

### isProofOverdue?

> `optional` **isProofOverdue**: `boolean`

Defined in: [packages/synapse-sdk/src/types.ts:631](https://github.com/FilOzone/synapse-sdk/blob/83770aa3b42e40c80326c80cbbbd1c1206c920c0/packages/synapse-sdk/src/types.ts#L631)

Whether the proof is overdue (past the challenge window without being submitted)

***

### pieceId?

> `optional` **pieceId**: `bigint`

Defined in: [packages/synapse-sdk/src/types.ts:625](https://github.com/FilOzone/synapse-sdk/blob/83770aa3b42e40c80326c80cbbbd1c1206c920c0/packages/synapse-sdk/src/types.ts#L625)

The piece ID if the piece is in the data set

***

### retrievalUrl

> **retrievalUrl**: `string` \| `null`

Defined in: [packages/synapse-sdk/src/types.ts:623](https://github.com/FilOzone/synapse-sdk/blob/83770aa3b42e40c80326c80cbbbd1c1206c920c0/packages/synapse-sdk/src/types.ts#L623)

URL where the piece can be retrieved (null if not available)