# PieceStatus

Defined in: [packages/synapse-sdk/src/types.ts:696](https://github.com/FilOzone/synapse-sdk/blob/d9d7ff65cc57a0664db3a209a0d25c3a4d4e34f0/packages/synapse-sdk/src/types.ts#L696)

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:698](https://github.com/FilOzone/synapse-sdk/blob/d9d7ff65cc57a0664db3a209a0d25c3a4d4e34f0/packages/synapse-sdk/src/types.ts#L698)

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:700](https://github.com/FilOzone/synapse-sdk/blob/d9d7ff65cc57a0664db3a209a0d25c3a4d4e34f0/packages/synapse-sdk/src/types.ts#L700)

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

***

### hoursUntilChallengeWindow?

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

Defined in: [packages/synapse-sdk/src/types.ts:708](https://github.com/FilOzone/synapse-sdk/blob/d9d7ff65cc57a0664db3a209a0d25c3a4d4e34f0/packages/synapse-sdk/src/types.ts#L708)

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

***

### inChallengeWindow?

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

Defined in: [packages/synapse-sdk/src/types.ts:706](https://github.com/FilOzone/synapse-sdk/blob/d9d7ff65cc57a0664db3a209a0d25c3a4d4e34f0/packages/synapse-sdk/src/types.ts#L706)

Whether the data set is currently in a challenge window

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### isProofOverdue?

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

Defined in: [packages/synapse-sdk/src/types.ts:710](https://github.com/FilOzone/synapse-sdk/blob/d9d7ff65cc57a0664db3a209a0d25c3a4d4e34f0/packages/synapse-sdk/src/types.ts#L710)

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

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### pieceId?

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

Defined in: [packages/synapse-sdk/src/types.ts:704](https://github.com/FilOzone/synapse-sdk/blob/d9d7ff65cc57a0664db3a209a0d25c3a4d4e34f0/packages/synapse-sdk/src/types.ts#L704)

The piece ID if the piece is in the data set

***

### retrievalUrl

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

Defined in: [packages/synapse-sdk/src/types.ts:702](https://github.com/FilOzone/synapse-sdk/blob/d9d7ff65cc57a0664db3a209a0d25c3a4d4e34f0/packages/synapse-sdk/src/types.ts#L702)

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