# Piece

Defined in: [packages/synapse-core/src/warm-storage/types.ts:57](https://github.com/FilOzone/synapse-sdk/blob/2e357180d354970e2a091ff7ef0f3021c8357d4f/packages/synapse-core/src/warm-storage/types.ts#L57)

## Properties

### cid

> **cid**: [`PieceCID`](/reference/filoz/synapse-core/piece/classes/piececid/)

Defined in: [packages/synapse-core/src/warm-storage/types.ts:58](https://github.com/FilOzone/synapse-sdk/blob/2e357180d354970e2a091ff7ef0f3021c8357d4f/packages/synapse-core/src/warm-storage/types.ts#L58)

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### id

> **id**: `bigint`

Defined in: [packages/synapse-core/src/warm-storage/types.ts:59](https://github.com/FilOzone/synapse-sdk/blob/2e357180d354970e2a091ff7ef0f3021c8357d4f/packages/synapse-core/src/warm-storage/types.ts#L59)

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### url

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

Defined in: [packages/synapse-core/src/warm-storage/types.ts:61](https://github.com/FilOzone/synapse-sdk/blob/2e357180d354970e2a091ff7ef0f3021c8357d4f/packages/synapse-core/src/warm-storage/types.ts#L61)

Retrieval URL, or null when no provider endpoint or CDN is available.