# isUuid5

Tests whether a string is an RFC UUID version 5 value.

## Signatures

```ts
export declare const isUuid5: (value: string) => value is Uuid5;
```

## Why

Runtime refinement restores trust after serialization has erased the TypeScript brand.

## Ownership and lifetime

This pure predicate acquires no resources and retains no input.

## Examples

```ts
import { isUuid5 } from "@typed/id/Uuid5"
isUuid5("21f7f8de-8051-5b89-8680-0195ef798b6a")
```