> ## Documentation Index
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> Use this file to discover all available pages before exploring further.

# isVcChain

> **isVcChain**(`chain`): `chain is VCChain`

Checks if a string is a valid and supported chain for VCs.

## Parameters

| Parameter | Type     | Description                |
| --------- | -------- | -------------------------- |
| `chain`   | `string` | The chain string to check. |

## Returns

`chain is VCChain`

`true` if the string is a valid `VCChain`, otherwise `false`.

## Defined in

[verifiableCredentialsSDK/types/utils.ts:111](https://github.com/Crossmint/crossmint-sdk/blob/main/packages/client/verifiable-credentials/src/verifiableCredentialsSDK/types/utils.ts#L111)