# PieceMetadata

> **PieceMetadata** = `object`

Defined in: [types.ts:62](https://github.com/FilOzone/synapse-sdk/blob/68e30a2a5457180e60a5579eb5ecff90b65894b3/packages/keysmith/src/types.ts#L62)

FEE envelope entries to enable key derivation/recovery

## Properties

### foc/ks

> **foc/ks**: `Hex`

Defined in: [types.ts:65](https://github.com/FilOzone/synapse-sdk/blob/68e30a2a5457180e60a5579eb5ecff90b65894b3/packages/keysmith/src/types.ts#L65)

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### foc/own

> **foc/own**: `Address`

Defined in: [types.ts:64](https://github.com/FilOzone/synapse-sdk/blob/68e30a2a5457180e60a5579eb5ecff90b65894b3/packages/keysmith/src/types.ts#L64)

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### foc/salt

> **foc/salt**: `Hex`

Defined in: [types.ts:67](https://github.com/FilOzone/synapse-sdk/blob/68e30a2a5457180e60a5579eb5ecff90b65894b3/packages/keysmith/src/types.ts#L67)

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### foc/scope?

> `optional` **foc/scope?**: `string`

Defined in: [types.ts:66](https://github.com/FilOzone/synapse-sdk/blob/68e30a2a5457180e60a5579eb5ecff90b65894b3/packages/keysmith/src/types.ts#L66)

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### foc/v

> **foc/v**: `1`

Defined in: [types.ts:63](https://github.com/FilOzone/synapse-sdk/blob/68e30a2a5457180e60a5579eb5ecff90b65894b3/packages/keysmith/src/types.ts#L63)