# Function: getDepositDenom()

> **getDepositDenom**(`collection`): `string` \| `undefined`

Defined in: [packages/bitbadgesjs-sdk/src/core/prediction-markets.ts:54](https://github.com/BitBadges/bitbadgesjs/blob/master/packages/bitbadgesjs-sdk/src/core/prediction-markets.ts#L54)

Extract the deposit denom from a prediction market collection's mint approval.
Returns the denom string (e.g., 'ubadge', 'ibc/F082B65...') or undefined if not found.

## Parameters

### collection

`any`

## Returns

`string` \| `undefined`