You can store your Nuls in the free multi-coin [digital wallet](https://www.cointree.com/learn/cryptocurrency-wallets/) that you receive when you sign up for an account with Cointree. Alongside your Nuls, you can store hundreds of other digital currencies listed on our exchange, such as popular long-term investments bitcoin and Ethereum. Alternatively, you can store your Nuls in an external hardware wallet like a Ledger.