# z.tempo.SignatureEnvelope.KeychainVersion

Keychain signature version schema.

## Imports

```ts
import { z } from 'ox/zod'

z.tempo.SignatureEnvelope.KeychainVersion
```

## Definition

```ts
export const KeychainVersion = z.union([z.literal('v1'), z.literal('v2')])
```

**Source:** [src/zod/tempo/SignatureEnvelope.ts](https://github.com/wevm/ox/blob/main/src/zod/tempo/SignatureEnvelope.ts)