Recently, many friends around me have been asking about cold wallets. Indeed, as more and more people participate in on-chain activities, managing private keys and seed phrases has become a major problem. I’ve seen too many people lose assets due to improper management—this is also why the recommended level of cold wallets has risen so sharply in the past two years.

First, let’s talk about what a cold wallet actually is. Simply put, it means storing private keys on an offline device, such as a hardware wallet, a paper wallet, or a USB drive. Its core advantage is isolating you from network threats—hackers and malware can’t directly access your assets. In comparison, although hot wallets are convenient to use, because they are connected to the internet, they’re easier to be attacked.

How does a cold wallet work? The first step is to generate a public-private key pair. The public key is like your account—it can be publicly used to receive coins. The private key is the real master key; whoever has it can move all the assets in the wallet. Many people also come across seed phrases, which convert the private key into 12 or 24 English words to make it easier to remember. The second step is offline storage—physically isolating these critical pieces of information to ensure security.

When it comes to specific cold wallet recommendations, there are a few reputable hardware wallets on the market. Ledger Nano X is from France. It supports more than 5,500 types of coins, has a security rating of CC EAL 5, and costs 149 USD. Trezor Safe 5 is a product from a Czech company. It has an even higher security rating (CC EAL 6+), supports more than 1,000 coins, and costs 169 USD. There is also SafePal S1 Pro, which supports more than 30,000 coins. It’s the most budget-friendly option, costing only 89.99 USD.

How should you choose? I think you mainly need to look at a few aspects. First is security—that’s the core. You should look for products with high encryption strength and multi-factor authentication. Next is compatibility, making sure they support the coins you hold. Then there’s cost and user experience. Prices range from dozens to a few hundred dollars, but the most important thing is that the value for money is appropriate, and the operation interface should also feel smooth. Usually you can find this information on official websites, and you can also look at user reviews.

The usage process is not complicated either. If you don’t yet have a public-private key pair, generate one first using a cold wallet. Then, during a transaction, connect it to your phone or computer, enter your PIN to unlock, and after you initiate the transaction, verify and confirm it on the device. Once the transaction is completed, disconnect from the network and the private key and seed phrase return to a secure state. But be careful—don’t connect to unknown DApps casually; otherwise, the advantages of a cold wallet are basically wasted.

Although hardware wallets have features like drop resistance, water resistance, and fire resistance, you still need to store them properly to avoid physical damage. Also, even if you buy a hardware wallet, it’s recommended to back up your private key and seed phrase using paper or a USB drive, adding another layer of protection.

When comparing cold wallets and hot wallets, the difference is quite clear. Cold wallets store assets offline and have high security, but the operation is more cumbersome and requires an upfront investment, making them suitable for long-term holdings. Hot wallets store assets online and are convenient to operate and free, but they carry higher security risks, making them suitable for frequent trading.

From market trends, the number of crypto wallet users has grown rapidly in recent years, and the hardware wallet market is also expanding. More and more developers are entering the space, competition is intensifying—which is actually good news for users. In order to capture market share, manufacturers have to improve security, support more coins, and lower prices. So when choosing recommended cold wallet products right now, there are quite a few solid options worth considering.