Recently, in the community, many people have been asking about how to securely store cryptocurrency assets. In fact, the most direct solution is to use a cold wallet. I’ve also used several models myself, and I’d like to share some practical experiences and suggestions.

First, let’s talk about why you should use a cold wallet. Hot wallets are convenient, but if private key management isn’t handled properly, the risk of assets being stolen is still quite high. Among people I know, someone actually lost coins due to a private key leak, and that feeling is really unpleasant. A cold wallet, by nature, keeps your private keys in an offline device—so hackers can’t launch remote attacks. Its security is definitely much higher.

When it comes to how cold wallets work, there are essentially two steps. First, generate a pair of public and private keys. Your public key is like your receiving address—it can be shared publicly. The private key is the real thing that can move your assets, so it must be carefully protected. There are also mnemonic phrases, usually 12 or 24 English words, designed to make the private key easier to remember. Second is offline storage. A cold wallet is not connected to the internet; it relies on physical isolation to prevent hackers and malicious software—this is the core reason why it’s secure.

There are quite a lot of hardware wallet options on the market. Ledger Nano X is a product from the French company Ledger. It supports more than 5,500 coins, and its security certification reaches CC EAL 5 level. It costs $149. I’ve used this model; the interface is fairly intuitive, and compatibility is also good. Trezor Safe 5 is the work of Czech company SatoshiLabs. Its certification level is higher (CC EAL 6+), it has a touchscreen, supports more than 1,000 coins, and is priced at $169. There’s also SafePal S1 Pro, which is a bit special: it supports more than 30,000 coins and is relatively affordable, around $89.99. It supports both USB-C and scanning via QR code.

How do you choose a cold wallet? I think it mainly comes down to four aspects. Security is the most important—look for products with strong encryption and multi-factor authentication. Next is compatibility: before buying, confirm whether the wallet supports the coins you hold. Then there’s cost—don’t blindly chase expensive options; value for money is the way to go. Finally, user experience: a user-friendly interface makes it much easier to manage your assets. You can usually find this information on the official websites, and you can also check user reviews.

The actual process of using a cold wallet isn’t complicated. If you don’t have a public/private key pair yet, generate one first using a cold wallet or a hot wallet. When you need to make a transaction, connect the wallet to your phone or computer, enter your PIN or password to unlock it, initiate the transaction, and then verify and confirm it on the device. After the transaction is completed, disconnect the connection; the private key goes back to an offline state, and security is improved. But be careful not to connect to an unknown DApp casually—otherwise, the advantages of a cold wallet would be lost.

Cold wallets and hot wallets each have their own use cases. Cold wallets are secure but more cumbersome to operate, making them suitable for long-term storage; they usually cost between $50 and $500 to purchase. Hot wallets are convenient and free to use, but their security is relatively lower, so they’re more suitable for frequent trading. My suggestion is: store large amounts of assets in a cold wallet, and use a hot wallet for daily transactions—so you get both safety and convenience.

One more thing: even if a cold wallet has drop-proof, waterproof, and fireproof features, you still need to protect it well to avoid damage. It’s best to back up a copy of your private key or mnemonic phrase on paper or on a USB drive, so even if the hardware has a problem, you won’t end up losing everything.

Based on market data, the number of cryptocurrency wallet users has already reached over 68 million, and the hardware wallet market is growing rapidly. In the future, it’s expected that more manufacturers will enter the market, making competition increasingly intense. This is good news for users, because vendors will continuously improve security, support more coins, and lower prices to capture market share. So, choosing a cold wallet right now is actually a pretty good timing.